Table of Contents

Climate-related natural disasters have emerged as one of the most pressing humanitarian challenges of our time, forcing millions of people from their homes each year and reshaping population distribution patterns across the globe. The intersection of climate change, extreme weather events, and human displacement represents a complex crisis that demands urgent attention from governments, international organizations, and communities worldwide. As the planet continues to warm and weather patterns become increasingly unpredictable, understanding the dynamics of climate-induced displacement has never been more critical.

The Scale of Climate-Induced Displacement

In 2024, more than 45 million weather-related disaster displacements were recorded globally, the highest figure since the Internal Displacement Monitoring Centre started tracking data in 2008. This staggering number represents not just a statistical milestone but a humanitarian crisis affecting tens of millions of individuals and families who have been forced to flee their homes due to hurricanes, floods, droughts, wildfires, and other climate-related disasters.

The trend shows no signs of abating. Over the past 10 years, there has been an average of 21.9 million internal displacements each year linked to weather-related hazards. These figures underscore the persistent and growing nature of climate displacement, with weather-related disasters causing some 250 million internal displacements over the past decade – equivalent to around 70,000 displacements per day. To put this in perspective, that means approximately two people are displaced every three seconds due to weather-related disasters.

An unprecedented 83.4 million people were living in internal displacement at the end of 2024, according to the Internal Displacement Monitoring Centre's Global Report on Internal Displacement. While conflict remains a significant driver of displacement, climate-related disasters continue to force massive population movements, with 7.7 million people living in internal displacement due to disasters at the end of 2023.

The geographic distribution of climate displacement reveals important patterns. In 2023, the Horn of Africa and Asia recorded the highest numbers of disaster displacements. However, climate disasters are increasingly affecting regions previously considered less vulnerable, demonstrating that no area of the world is immune to the impacts of climate change and the displacement it causes.

Storms and Cyclones

Tropical storms, hurricanes, and cyclones represent some of the most destructive forces of nature, capable of displacing millions of people in a matter of hours. Cyclones accounted for 54 per cent of all disaster displacements in 2024, with 29 countries and territories reporting their highest disaster displacement figures on record. These powerful weather systems bring devastating winds, storm surges, and torrential rainfall that can destroy entire communities, forcing residents to evacuate to safer locations.

The intensity and frequency of these storms are increasing due to climate change. Warmer ocean temperatures provide more energy for storm formation and intensification, leading to more powerful cyclones that can maintain their strength over longer periods. Coastal communities are particularly vulnerable, facing not only the immediate threat of storm damage but also the long-term challenges of rebuilding in areas that may face repeated disasters.

Floods

Flooding represents one of the most common and widespread causes of climate-related displacement worldwide. Weather-related hazards such as storms, floods and wildfires are tracked by displacement monitoring organizations, with floods consistently ranking among the top displacement triggers. River flooding, flash floods, and coastal flooding can all force communities to evacuate, sometimes with little warning.

Floods are cited as one of the four main drivers of displacement, resulting in the displacement of approximately five per cent of internally displaced persons. In regions like Mali, the Central and Northern regions have experienced heavy rainy seasons and rising water levels along the Niger River, creating ongoing displacement challenges. The impacts extend beyond immediate evacuation needs, as there is a high likelihood of damage to farmland, loss of human and animal lives, destruction of key infrastructures, spread of waterborne diseases, landslides, river silting, weed infestations, and post-harvest losses.

Droughts

While droughts may not cause the sudden, dramatic displacement associated with storms or floods, they represent a significant and often underestimated driver of population movement. In 2023, 491,000 internal displacements were recorded globally due to droughts. Unlike rapid-onset disasters, droughts develop slowly over months or years, gradually eroding communities' ability to sustain themselves through agriculture and livestock.

Rising sea levels, droughts and drastic changes in rainfall patterns as a result of warmer temperatures can destroy crops and kill livestock, threatening livelihoods and exacerbating food insecurity — all of which can lead to massive displacement. The displacement caused by drought is often more complex than that caused by sudden disasters, as people may move gradually, first sending family members to cities in search of work before eventually relocating entire households.

Forecasting models provide sobering projections for drought-prone regions. On average, 1.9 million people could be displaced annually by floods and droughts, under current climate conditions, in Ethiopia, Somalia, and Sudan. Even more concerning, without measures to mitigate climate change, this number could double under a pessimistic scenario.

Wildfires

Wildfires have emerged as an increasingly significant driver of displacement in recent years, affecting both developed and developing nations. Wildfires accounted for more than 694,000 displacements in 2025, the hazard's second-highest figure recorded in the past decade. From the United States to Korea, from Canada to Türkiye and Greece, the data is clear: wildfires are becoming more frequent, more intense, more widespread, and they are forcing more people from their homes.

Climate change contributes to wildfire risk through multiple pathways: higher temperatures, prolonged droughts, earlier snowmelt, and changes in vegetation patterns all create conditions conducive to larger and more destructive fires. Communities in fire-prone areas face difficult decisions about whether to rebuild in place or relocate permanently, particularly as fire seasons lengthen and intensify.

Vulnerability Factors and Regional Disparities

Not all communities face equal risk of climate-induced displacement. Vulnerability to displacement depends on a complex interplay of geographic, economic, social, and political factors that determine both exposure to hazards and capacity to respond effectively.

Geographic Vulnerability

Geographic location plays a fundamental role in determining displacement risk. Coastal communities face threats from sea-level rise, storm surges, and increasingly powerful tropical cyclones. Low-lying island nations in the Pacific are among the most vulnerable populations globally, facing existential threats from rising seas. Inhabitants of developing island states in the Pacific are amongst those most at risk of being displaced by disasters.

River valleys and floodplains, while often agriculturally productive, expose communities to recurring flood risks. Mountain regions face threats from glacial lake outburst floods, landslides, and changes in water availability. Arid and semi-arid regions are particularly vulnerable to drought and desertification, which can render traditional livelihoods unsustainable.

Socioeconomic Vulnerability

Economic resources significantly influence both exposure to climate hazards and capacity to respond. Wealthier communities can invest in protective infrastructure such as seawalls, drainage systems, and early warning systems. They can also afford to build more resilient housing and have greater resources for evacuation and recovery. In contrast, impoverished communities often live in the most hazard-prone areas—floodplains, steep hillsides, or informal settlements—with inadequate housing that offers little protection against extreme weather.

The 2024 report "Who are Climate Migrants?" analyzed and revealed marked socioeconomic differences in the profiles of communities affected by weather-related internal displacements. This research highlights how poverty, lack of education, limited access to information, and social marginalization all increase vulnerability to displacement.

Infrastructure and Preparedness

The quality of infrastructure and level of disaster preparedness vary dramatically across regions and communities. Countries with robust early warning systems, well-maintained infrastructure, and effective emergency response mechanisms can often minimize displacement even when facing severe weather events. Conversely, regions with weak infrastructure, limited emergency services, and inadequate planning face higher displacement rates from comparable disasters.

Sporadic heavy rainfall has been known to destroy basic infrastructure and people's homes, forcing communities to rely on emergency relief. In Libya, for example, although it is two years since the devastating storm Daniel hit Libya, and since the flash floods, their impact still lingers in the most affected communities, and reconstruction is yet to materialize.

The Intersection of Climate and Conflict

Climate change and conflict often intersect in ways that compound displacement risks. Three-quarters of the world's forcibly displaced live in countries heavily impacted by climate change. This overlap is not coincidental—climate stresses can exacerbate existing tensions and contribute to conflict.

From Venezuela to South Sudan, vulnerable communities around the world are already experiencing shortages in food, potable water, land and natural resources due to climate change. Competition over depleted natural resources can spark conflict between communities or compound pre-existing vulnerabilities. In Mali, the combined pressure on natural resources due to these hazards, together with insecurity, has also disrupted traditional transhumance routes contributing to increased tensions between farming and herding communities, exacerbating food insecurity, and creating further protection risks.

Impacts on Displaced Populations

The consequences of climate-induced displacement extend far beyond the immediate loss of homes and property. Displaced populations face a cascade of challenges that can persist for years or even decades, affecting every aspect of their lives and well-being.

Loss of Livelihoods and Economic Hardship

Displacement typically results in immediate and often permanent loss of livelihoods. Farmers lose access to their land, fishers can no longer reach their traditional fishing grounds, and small business owners abandon their shops and customer bases. Extreme weather conditions are driving rural-urban migration, contributing to water scarcity, and impacting agricultural productivity, exposing communities to health risks, and forcing them to search for alternative livelihood options amidst limited employment opportunities.

The economic impacts ripple through entire communities and regions. When large numbers of people are displaced, local economies can collapse, tax bases erode, and public services deteriorate. Displaced populations often struggle to find employment in their new locations, particularly when they lack relevant skills or face discrimination. This economic precarity can trap families in poverty for generations.

Health Challenges

Displaced populations face elevated health risks from multiple sources. The immediate aftermath of disasters often brings outbreaks of waterborne diseases, respiratory infections, and injuries. Displacement camps and temporary shelters can become breeding grounds for infectious diseases due to overcrowding, inadequate sanitation, and limited access to clean water.

Mental health impacts are profound and often overlooked. The trauma of losing one's home, community, and sense of security can lead to depression, anxiety, and post-traumatic stress disorder. Children are particularly vulnerable to these psychological impacts, which can affect their development and future prospects.

In drought-affected areas, malnutrition becomes a critical concern. 26.4% of children in Turkana Country suffered from critical global acute malnutrition during a drought period, illustrating the severe health consequences of climate-related displacement.

Education Disruption

Displacement severely disrupts children's education, with consequences that can last a lifetime. Schools may be destroyed in disasters, and even when they remain standing, displaced children often cannot attend due to distance, lack of documentation, language barriers, or the need to work to support their families. Extended periods out of school make it difficult for children to catch up academically, and many never return to formal education.

The educational impact extends beyond individual children to affect entire communities and nations. When large cohorts of children miss years of schooling due to displacement, it creates long-term deficits in human capital that can hinder economic development and social progress for decades.

Family Separation and Social Disruption

Climate disasters and the displacement they cause often tear families apart. In the chaos of evacuation, family members may become separated and struggle to reunite. Economic pressures may force families to split up, with some members migrating to cities for work while others remain behind or move to different locations.

Between 29 April and 20 May 2023, DTM organized a Multisector Location Assessment in Turkana County and reported that 7% (19,515 households) were child-headed households. Of these, approximately 1,622 households had no relatives or community members living near them and 8% reported to be without regular and reliable sources of support. These statistics reveal the profound social disruption that displacement can cause, leaving vulnerable children without adequate adult supervision or support.

Displacement also disrupts broader social networks and community structures. Traditional support systems, cultural practices, and social cohesion can break down when communities are scattered. This loss of social capital makes it harder for displaced populations to cope with their circumstances and rebuild their lives.

Protection Risks and Vulnerability

Displaced populations face heightened protection risks, including exploitation, abuse, and violence. Women and girls are particularly vulnerable to gender-based violence in displacement settings. Children may be at risk of trafficking, forced labor, or recruitment by armed groups. The breakdown of normal social structures and oversight, combined with the desperation that often accompanies displacement, creates conditions where exploitation can flourish.

Legal and administrative challenges compound these vulnerabilities. Displaced people may lack identity documents, property titles, or other paperwork needed to access services, claim assistance, or assert their rights. Without legal status or recognition, they may be unable to work legally, enroll children in school, or access healthcare.

Regional Perspectives on Climate Displacement

Sub-Saharan Africa

The number of internally displaced people in Sub-Saharan Africa reached a record 38.8 million as of the end of the year, around 46 per cent of the global total. The region faces a complex mix of climate-related displacement drivers, including droughts in the Horn of Africa and Sahel, floods in Central and West Africa, and tropical cyclones along the eastern and southern coasts.

The intersection of climate change, conflict, and poverty creates particularly severe displacement challenges in Sub-Saharan Africa. All 23 countries that recorded conflict displacements also registered movements triggered by disasters. This overlap means that populations already vulnerable due to conflict face additional displacement pressures from climate disasters, creating cycles of displacement that are difficult to break.

Asia and the Pacific

Asia consistently records the highest absolute numbers of disaster displacements globally, due to both its large population and high exposure to climate hazards. For all hazards, Asia is the continent projected to be most affected in terms of total people exposed. The region faces diverse climate threats, including typhoons in Southeast and East Asia, monsoon floods in South Asia, and sea-level rise threatening low-lying coastal areas and island nations.

Pacific island nations face existential threats from climate change. Rising seas threaten to submerge entire nations, forcing consideration of planned relocation of entire populations—a scenario unprecedented in modern history. These communities face not just physical displacement but the potential loss of their homelands, cultures, and national identities.

The Americas

The number of internal displacements in the Americas reached a record 14.5 million in 2024, more than the previous five years combined. The region experiences diverse climate hazards, including hurricanes in the Caribbean and Central America, floods in South America, droughts in Central America and parts of South America, and increasingly severe wildfires in North America.

The dramatic increase in displacement reflects both the intensification of climate hazards and the vulnerability of communities across the region. Urban flooding has become a particular concern in rapidly growing cities with inadequate drainage infrastructure, while rural communities face displacement from droughts and agricultural failures.

Middle East and North Africa

The Middle East and North Africa region faces particular challenges from water scarcity, extreme heat, and desertification. 2024 was the hottest year on record in the Arab region, with temperatures rising at twice the global average. Extreme weather events affected nearly 3.8 million people and resulted in more than 300 deaths, mainly from heatwaves and floods.

Climate stresses in this region often interact with conflict and political instability, creating complex displacement scenarios. Water scarcity can exacerbate tensions between communities and countries, while extreme heat makes displacement camps and informal settlements increasingly dangerous for vulnerable populations.

The Challenge of Protracted Displacement

One of the most significant misconceptions about climate-related displacement is that it is temporary. Persistent misconceptions surround disaster displacement, with serious implications for people, policy and responses. These misconceptions include, for example, that disaster displacement is short-term, when in reality it often becomes protracted.

Many factors contribute to protracted displacement following climate disasters. Destroyed infrastructure may take years to rebuild, particularly in resource-constrained settings. Contaminated land or water sources may remain unusable for extended periods. In some cases, the original location may no longer be viable for habitation due to ongoing climate risks, sea-level rise, or permanent environmental changes.

Economic barriers often prevent return even when physical reconstruction is possible. Displaced populations may have exhausted their savings during displacement, making it impossible to afford the costs of returning and rebuilding. Those who have found employment in their displacement location may be reluctant to give up income sources, even if they wish to return home.

Repeated displacement creates particular challenges. When communities are displaced multiple times by recurring disasters, each displacement erodes their resilience and resources further. People may eventually give up on returning, recognizing that their original location is no longer safe or viable. This pattern is increasingly common as climate change makes certain areas subject to repeated disasters.

Responses and Support Mechanisms

Addressing climate-induced displacement requires coordinated action across multiple levels, from local communities to international organizations. Effective responses must address both immediate humanitarian needs and longer-term solutions that prevent displacement or enable displaced populations to rebuild their lives.

Emergency Response and Humanitarian Assistance

When climate disasters strike, immediate humanitarian response is essential to save lives and alleviate suffering. This includes search and rescue operations, emergency medical care, provision of food and water, and establishment of temporary shelter. Early warning systems play a crucial role in enabling populations to evacuate before disasters strike, potentially saving thousands of lives.

However, humanitarian response faces significant challenges. In 2025, global defence spending reached $2.63 trillion. The 2025 UN humanitarian appeal received only $12 billion, the lowest funding in a decade. This means humanitarian funding was less than 0.5% of defense spending. This massive funding gap severely constrains the ability of humanitarian organizations to respond effectively to displacement crises.

Displacement Tracking and Data Systems

Effective response to displacement requires accurate, timely data on who is displaced, where they are, and what they need. Having a more granular mapping of the populations affected by disaster displacement would enable better decision-making and enhance assistance and recovery efforts.

Organizations like the Internal Displacement Monitoring Centre and the International Organization for Migration's Displacement Tracking Matrix work to collect and analyze displacement data. Reliable displacement data is critical for understanding where needs and risks are greatest and for ensuring that policies and resources match the scale of the challenge. However, in 2025, data availability declined in several contexts due to fewer assessments and reduced coverage, limiting visibility on displacement dynamics and the situation of displaced people.

Shelter and Settlement Solutions

Providing adequate shelter for displaced populations presents enormous challenges. Emergency shelters such as tents or temporary structures may be necessary immediately after disasters, but they are not suitable for long-term habitation. Displacement camps, while sometimes necessary, can become overcrowded, unsanitary, and dangerous, particularly when displacement becomes protracted.

More sustainable approaches include supporting displaced populations to integrate into host communities, providing rental assistance, or facilitating access to more permanent housing. Planned relocation of communities in the context of environmental and climate change is increasingly implemented by governments. When return is not feasible, planned relocation can provide a more dignified and sustainable solution than indefinite displacement.

Livelihood Support and Economic Recovery

Helping displaced populations restore their livelihoods is essential for enabling them to support themselves and rebuild their lives. This may include providing agricultural inputs for farmers, tools and equipment for artisans, cash grants or loans for small businesses, or vocational training to help people develop new skills for different employment opportunities.

Economic recovery programs must be tailored to local contexts and the specific needs of displaced populations. In some cases, people may be able to resume their previous livelihoods after return. In other cases, displacement may require fundamental shifts in economic activities, particularly when climate change has made previous livelihoods unsustainable.

Protection Services

Ensuring the protection of displaced populations requires dedicated services and interventions. This includes preventing and responding to gender-based violence, protecting children from exploitation and abuse, providing legal assistance to help people access their rights, and ensuring that vulnerable groups receive appropriate support.

Protection also involves addressing discrimination and ensuring that displaced populations can access services without facing barriers based on their displacement status. Host communities may need support to prevent tensions between displaced and resident populations, particularly when resources are scarce.

International Cooperation and Coordination

Climate-induced displacement is a global challenge that requires international cooperation. Understanding climate-induced displacement and climate-driven migration is essential for creating policies that protect vulnerable populations. International frameworks and agreements provide important foundations for coordinated action, though significant gaps remain in the global governance of climate displacement.

Organizations like the International Federation of Red Cross and Red Crescent Societies work to coordinate response efforts across borders. The IFRC network aims to ensure that all people who migrate and are displaced are safe, are treated humanely and with dignity, and have the assistance and protection support they need to thrive in inclusive societies. However, coordination challenges persist, particularly in contexts where multiple crises overlap or where access is restricted.

Prevention and Risk Reduction Strategies

While responding to displacement is essential, preventing displacement in the first place is even more important. Disaster displacement is not inevitable. Investments in climate adaptation, disaster risk reduction and community resilience can reduce its scale and impact. These efforts depend on sufficient and adequate funding and support.

Climate Adaptation Measures

Climate adaptation involves adjusting systems, practices, and infrastructure to reduce vulnerability to climate change impacts. This can include developing drought-resistant crops, improving water management systems, restoring coastal ecosystems that provide natural protection against storms, and modifying building codes to ensure structures can withstand extreme weather.

Effective adaptation requires understanding local climate risks and vulnerabilities. Forecasting models offer critical insights for policymakers, helping governments reduce displacement risks and mitigate its impacts. By anticipating where and when climate disasters are likely to occur, governments and communities can take proactive measures to reduce displacement risks.

Disaster Risk Reduction

Disaster risk reduction encompasses a wide range of measures to reduce the likelihood and impact of disasters. This includes improving early warning systems, strengthening infrastructure, implementing land-use planning that keeps development out of high-risk areas, and building community preparedness and response capacity.

Infrastructure investments can significantly reduce displacement risk. Flood control systems, earthquake-resistant buildings, fire breaks, and cyclone shelters can all help communities withstand disasters without being displaced. However, such investments require substantial resources and long-term commitment, which may be challenging for resource-constrained governments.

Community Resilience Building

Building community resilience involves strengthening the capacity of communities to withstand, adapt to, and recover from climate shocks. This includes diversifying livelihoods so communities are not dependent on climate-sensitive activities, strengthening social networks and support systems, improving access to financial services like savings and insurance, and enhancing local governance and decision-making capacity.

Community-based approaches recognize that local populations have valuable knowledge and experience that should inform risk reduction efforts. Participatory planning processes that involve affected communities in designing and implementing adaptation and risk reduction measures tend to be more effective and sustainable than top-down approaches.

Ecosystem-Based Approaches

Natural ecosystems provide important protection against climate hazards. Mangroves and coastal wetlands buffer against storm surges, forests reduce landslide risk and regulate water flows, and healthy watersheds help prevent floods. Protecting and restoring these ecosystems can be a cost-effective way to reduce displacement risk while providing multiple co-benefits for biodiversity and livelihoods.

Ecosystem-based adaptation is increasingly recognized as an important complement to engineered solutions. However, it requires long-term commitment and may take years to deliver full benefits, which can make it challenging to prioritize in contexts where immediate needs are pressing.

Policy and Governance Challenges

Addressing climate-induced displacement requires appropriate policy and governance frameworks at local, national, and international levels. However, significant gaps and challenges remain in how displacement is governed and addressed.

International law provides limited protection for people displaced by climate disasters. Unlike refugees fleeing persecution, people displaced by climate disasters are not covered by the 1951 Refugee Convention and have no automatic right to cross international borders or receive protection in other countries. This creates a significant protection gap, particularly for people displaced across borders by climate disasters.

Some regional frameworks provide more comprehensive protection. The African Union's Kampala Convention, for example, covers people displaced by natural disasters. However, many regions lack similar frameworks, and even where frameworks exist, implementation often lags behind commitments.

There have been significant advances in the development of national and regional policies on disaster displacement and climate-related migration, but much work remains to translate these policies into effective action on the ground.

Institutional Capacity and Coordination

Effective response to climate displacement requires strong institutions with adequate capacity and resources. Many countries affected by climate displacement face institutional weaknesses that limit their ability to prevent, respond to, and resolve displacement. This includes limited technical capacity, inadequate funding, weak coordination between different government agencies, and insufficient engagement with affected communities.

Coordination challenges exist both within countries and internationally. Climate displacement cuts across multiple sectors—disaster management, climate adaptation, development, humanitarian response, migration management—and effective action requires coordination across these traditionally separate domains. However, institutional silos and competing priorities can make such coordination difficult to achieve.

Financing Challenges

Addressing climate displacement at scale requires substantial financial resources, but funding remains grossly inadequate. Chronic underfunding means humanitarian agencies consistently lack the resources they need to support refugees and displaced people worldwide. This persistent shortfall forces cuts to essential services such as protection, shelter, healthcare, and education.

Climate finance mechanisms established under international climate agreements could potentially support displacement prevention and response, but displacement has not been a major focus of climate finance to date. Loss and damage finance, which addresses irreversible climate impacts, could be particularly relevant for displacement, but loss and damage governance must fully account for displacement.

Data and Evidence Gaps

Despite significant progress in displacement monitoring, important data and evidence gaps remain. Knowledge gaps remain, and the international community needs better data to understand, prevent, manage and address internal displacement in conflict and disaster contexts. These gaps include limited understanding of the long-term trajectories of displaced populations, insufficient data on the specific needs of different groups within displaced populations, and inadequate evidence on what interventions are most effective in different contexts.

Improving data systems requires investment in national statistical capacity, better coordination between data collectors, and development of standardized methodologies that allow for comparison across contexts while remaining sensitive to local specificities.

Future Projections and Emerging Challenges

As climate change continues to intensify, displacement is expected to increase substantially in coming decades. The World Bank has projected that as many as 216 million people could become internal climate migrants by 2050, if concerted climate action is not taken. This projection underscores the urgency of both reducing greenhouse gas emissions to limit climate change and investing in adaptation and displacement prevention.

By 2040, extreme climate-related hazards are expected to affect 65 countries. This expanding geographic footprint of climate impacts means that countries and regions that have historically experienced relatively few climate disasters may face increasing displacement pressures. This will require building new capacities and systems in places that may currently lack experience with large-scale climate displacement.

Slow-Onset Climate Change

While much attention focuses on displacement from sudden disasters like storms and floods, slow-onset climate changes like sea-level rise, desertification, and glacial retreat will increasingly drive displacement in coming decades. These gradual changes may not trigger the dramatic displacement events that attract media attention and humanitarian response, but they can make entire regions uninhabitable over time, forcing permanent relocation of populations.

Slow-onset displacement presents distinct challenges. It may be difficult to identify a clear moment when displacement occurs, complicating efforts to track and respond. People may move gradually over years or decades, making it hard to distinguish climate-driven migration from other forms of mobility. And because slow-onset changes are often irreversible, return may not be possible, requiring permanent resettlement solutions.

Urban Displacement Challenges

Climate displacement is increasingly an urban phenomenon. Cities are growing rapidly in many climate-vulnerable regions, concentrating populations in areas exposed to floods, storms, and other hazards. Urban displacement presents distinct challenges, including the high cost of urban land and housing, the complexity of urban systems and infrastructure, and the large numbers of people who can be affected by single events.

At the same time, cities are often destinations for people displaced from rural areas by droughts, agricultural failures, and other climate impacts. Managing this climate-driven rural-to-urban migration requires urban planning and investment to ensure cities can accommodate growing populations without creating new vulnerabilities.

Cross-Border Displacement

While most climate displacement occurs within countries, cross-border displacement is likely to increase as climate impacts intensify. Small island states facing inundation from sea-level rise may eventually require relocation of entire populations to other countries. Severe droughts or other disasters may drive people to cross borders in search of safety and livelihoods, particularly when their home countries lack capacity to support them.

Cross-border climate displacement raises complex legal and political questions. As noted earlier, international refugee law does not cover people fleeing climate disasters, leaving them without clear legal status or protection. Developing appropriate frameworks for cross-border climate displacement is an urgent priority, but progress has been slow due to political sensitivities around migration.

The Path Forward: Integrated Solutions

Addressing climate-induced displacement effectively requires integrated approaches that connect climate action, disaster risk reduction, development, and humanitarian response. Internal displacement is where conflict, poverty and climate collide, hitting the most vulnerable the hardest. These latest numbers prove that internal displacement is not just a humanitarian crisis; it's a clear development and political challenge that requires far more attention than it currently receives.

Prioritizing Prevention

While humanitarian response will always be necessary, much greater emphasis must be placed on preventing displacement before it occurs. This means investing in climate adaptation, disaster risk reduction, and community resilience at scale. It means incorporating displacement risk into development planning and ensuring that development investments do not inadvertently increase vulnerability.

Prevention also requires addressing the root causes of vulnerability, including poverty, inequality, and weak governance. Communities with strong social safety nets, diversified livelihoods, and effective governance are better able to withstand climate shocks without being displaced.

Strengthening Data and Evidence

The data is clear, it's now time to use it to prevent displacement, support recovery, and build resilience. Continued investment in displacement monitoring and analysis is essential for understanding the scale and nature of the challenge and for designing effective responses. This includes not just counting displaced people but understanding their specific needs, tracking their movements over time, and evaluating what interventions work.

Better data must be translated into action. Governments, international organizations, and other actors need to use displacement data to inform policy decisions, allocate resources, and design programs. Early warning systems that can anticipate displacement before it occurs offer particular promise for enabling proactive rather than reactive responses.

Ensuring Adequate Financing

Addressing climate displacement at the scale required demands dramatically increased financing. This includes humanitarian funding to respond to displacement crises, development funding to build resilience and prevent displacement, and climate finance to support adaptation in vulnerable regions. Innovative financing mechanisms, including climate risk insurance and anticipatory financing that releases funds before disasters strike, can help ensure resources are available when and where they are needed.

Financing must be predictable, flexible, and sufficient to meet needs. The current system of voluntary humanitarian appeals that are chronically underfunded is inadequate for addressing a challenge of this magnitude. More systematic approaches to financing displacement prevention and response are urgently needed.

Protecting Rights and Dignity

Throughout all efforts to address climate displacement, protecting the rights and dignity of displaced populations must remain central. This means ensuring displaced people can access essential services, protecting them from exploitation and abuse, involving them in decisions that affect their lives, and supporting durable solutions that enable them to rebuild their lives with dignity.

It also means addressing the structural inequalities that make some communities more vulnerable to displacement than others. Climate displacement disproportionately affects poor and marginalized populations who have contributed least to climate change but suffer its worst impacts. Addressing this injustice requires not just responding to displacement but tackling the underlying inequalities that create vulnerability.

Fostering International Cooperation

Climate displacement is a global challenge that no country can address alone. International cooperation is essential for sharing knowledge and best practices, providing financial and technical support to countries facing displacement, coordinating humanitarian response, and developing governance frameworks that protect displaced populations.

This cooperation must be based on principles of solidarity and shared responsibility. Wealthy countries that have contributed most to climate change have a particular responsibility to support climate-vulnerable countries in preventing and responding to displacement. This includes providing climate finance, accepting climate migrants, and supporting capacity building in vulnerable regions.

Conclusion

Climate-related natural disasters are displacing millions of people each year, with numbers expected to rise substantially as climate change intensifies. This displacement creates profound humanitarian challenges, disrupting lives, separating families, destroying livelihoods, and creating protection risks for vulnerable populations. The impacts extend far beyond those directly displaced, affecting host communities, straining public services, and creating development challenges that can persist for generations.

Yet displacement is not inevitable. With adequate investment in climate adaptation, disaster risk reduction, and community resilience, much displacement can be prevented. When displacement does occur, effective humanitarian response, protection services, and support for durable solutions can help displaced populations rebuild their lives. And by addressing the root causes of vulnerability—poverty, inequality, weak governance—we can reduce the risk that climate shocks will force people from their homes.

The challenge is immense and growing, but so too is our understanding of what works. Organizations like the Internal Displacement Monitoring Centre provide crucial data and analysis that enables evidence-based responses. The International Organization for Migration and other humanitarian agencies deliver life-saving assistance to displaced populations. Governments, communities, and civil society organizations around the world are developing innovative approaches to prevent displacement and support displaced populations.

What is needed now is the political will and resources to implement solutions at scale. The cost of inaction is rising, and displaced people are paying the price. Every year of delay means more people displaced, more lives disrupted, more communities destroyed. But with concerted action—reducing greenhouse gas emissions to limit climate change, investing in adaptation and risk reduction, strengthening humanitarian response, and protecting the rights of displaced populations—we can reduce the human toll of climate displacement and build a more resilient future for all.

The climate displacement crisis is ultimately a test of our collective humanity and our commitment to protecting the most vulnerable. How we respond will define not just the lives of millions of displaced people but the kind of world we create for future generations. The time for action is now, and the stakes could not be higher. By working together across borders, sectors, and communities, we can rise to this challenge and ensure that no one is left behind as our climate changes.

For more information on climate change and its impacts, visit the United Nations Climate Change portal. To learn about disaster risk reduction efforts, explore resources from the UN Office for Disaster Risk Reduction. And to understand the broader context of forced displacement, consult the UN Refugee Agency.