Table of Contents
Understanding the Sahel Region and Its Climate Challenges
The Sahel region of West Africa represents one of the world’s most climatically vulnerable zones, stretching across the African continent from Senegal in the west to Sudan in the east. This semi-arid zone lies between the Sahara Desert and the humid Gulf of Guinea coast, roughly between 10-20°N, encompassing countries including Mauritania, Mali, Burkina Faso, Niger, Chad, and parts of Nigeria and Senegal. The region’s name derives from the Arabic word for “shore” or “border,” aptly describing its position as a transitional zone between desert and savanna ecosystems.
Currently, more than 80% of the population relies on agriculture to survive in the Sahel, making the region’s climate patterns critically important for human survival and economic stability. Agriculture and pastoralism account for 40% of regional GDP and employ between 60 and 80% of the population in the Sahel, underscoring the profound dependence on climate-sensitive livelihoods. This heavy reliance on rain-fed agriculture and livestock rearing creates exceptional vulnerability to climate variability and change.
The Sahel has long been recognized as a climate hotspot, experiencing some of the most dramatic climate fluctuations observed anywhere on Earth during the 20th century. The African Sahel experiences unparalleled rises in temperature, high precipitations variability, and more intense and frequent weather extreme events than the rest of the world. These climatic challenges have profound implications for agriculture, food security, water resources, and the livelihoods of the region’s rapidly growing population.
Historical Climate Patterns and Rainfall Variability
The Great Sahelian Droughts of the 20th Century
The Sahel’s climate history is marked by dramatic swings between wet and dry periods, with the late 20th century experiencing some of the most severe droughts in recorded history. In the 1970’s and 1980’s, the region experienced a profound drought, with over a 30% decrease in rainfall over most of the Sahel as compared to the 1950’s– arguably the most dramatic drought in any region of this large an extent observed in the 20th century. This catastrophic period had devastating consequences for the region’s populations and ecosystems.
From the late 1960s to early 1980s famine killed 100,000 people, left 750,000 dependent on food aid, and affected most of the Sahel’s 50 million people. The economies, agriculture, livestock and human populations of much of Mauritania, Mali, Chad, Niger and Burkina Faso were severely impacted. The severity of these droughts prompted international humanitarian responses and fundamentally changed how the global community understood climate-related disasters in vulnerable regions.
The drought period wasn’t uniform, however. In 1983-84 Sahelian countries received some of the lowest rainfall ever recorded. However, even though this drought was more severe than that of the early 1970s, the human impact was less severe, since economies and societies had developed better coping mechanisms. This demonstrates the importance of adaptation and resilience-building measures in reducing vulnerability to climate shocks.
Rainfall Characteristics and Seasonal Patterns
The Sahel is marked by rainfalls of less than 1,000 millimetres or 40 inches a year, almost all of which occurs in one continuous season, which can run from several weeks to four months. This concentration of rainfall into a single season creates inherent vulnerability, as any disruption to the monsoon can have catastrophic consequences for agriculture and water availability throughout the year.
This region is irrigated by summer monsoon rains and rain-fed agriculture is the primary sustenance for Sahel populations. The West African monsoon system drives these seasonal rains, with moisture-laden winds from the Atlantic Ocean bringing precipitation during the summer months. The timing, duration, and intensity of these rains determine agricultural success or failure for millions of farmers and pastoralists.
Recent research has revealed concerning changes in rainfall patterns beyond simple increases or decreases in total amounts. Particularly since the 2000s, overall seasonal rainfall amounts increased, but precipitation was distributed over fewer days. This shift toward more intense but less frequent rainfall events poses significant challenges for agriculture, as it can lead to both flooding and dry spells within the same growing season, making farming increasingly unpredictable and risky.
Climate Change Impacts on the Sahel
Rising Temperatures and Heat Stress
Temperature increases in the Sahel are occurring at rates significantly higher than the global average, creating additional stress on agricultural systems and human populations. Temperatures are rising 1.5 times faster than in the rest of the world in the Sahel region. This accelerated warming has multiple consequences for agriculture, water resources, and human health.
Most climate scenarios indicate that temperatures in the Sahel will rise by at least 2°C in the short term (2021-2040), which is 1.5 times higher than the global average. These temperature increases are not merely abstract statistics—they translate directly into reduced crop yields, increased water stress, and greater challenges for livestock management. Higher temperatures increase evapotranspiration rates, meaning that even when rainfall remains constant, less water is available for crops and pastures.
The Sahara and Sahel have recorded the highest increase in average annual and seasonal surface temperature of 1–3℃ beginning from the mid-1970s, and this is projected to be higher in the West African Sahel than the global warming average of 1.5℃ in 2021–2040, 2℃ in 2041–2060 and 3℃ in 2081–2100. These projections suggest that the challenges facing Sahelian agriculture will intensify significantly in the coming decades, requiring substantial adaptation efforts.
Extreme Weather Events and Climate Variability
Beyond gradual temperature increases, the Sahel is experiencing more frequent and intense extreme weather events, including both droughts and floods. The Sahelian region is experiencing the full impact of climate change and its dramatic consequences on people’s livelihoods, with communities facing a paradoxical combination of water scarcity and devastating floods.
In 2022, about 110 million Africans were directly affected by climate change, out of which, there were more than 5,000 fatalities (48% caused by drought and 43% caused by flooding). This dual threat of drought and flooding reflects the increasing unpredictability of climate patterns, making it extremely difficult for farmers to plan planting schedules and manage their crops effectively.
Climate change is also causing heavy rains (violent thunderstorms, above-normal rainfall). However, the land is too dry to absorb the rising waters; Destructive river floods and numerous flooding episodes were thus observed in Mali and Niger in 2019. This phenomenon illustrates how degraded soils and altered rainfall patterns interact to create compound disasters, where intense rainfall cannot be absorbed by hardened, degraded soils, leading to destructive runoff and flooding.
Land Degradation and Desertification
Climate change is accelerating land degradation processes across the Sahel, creating a vicious cycle that further undermines agricultural productivity. Climate change accelerates land degradation, mainly through wind and water erosion and droughts. Agricultural yields, food quality, and availability are all negatively affected by climate change. This degradation reduces the land’s capacity to support crops and livestock, forcing communities to either intensify use of remaining productive land or expand into marginal areas.
Lack of water and land degradation affect 80% of the population living in arid or semi-arid areas in the Sahel. This region is particularly vulnerable to soil degradation and desertification, with processes that can be difficult or impossible to reverse without significant intervention. Soil erosion removes the nutrient-rich topsoil essential for crop production, while desertification expands the boundaries of unproductive desert areas.
Under the combined effect of drought and floods, land is deteriorating and losing its fertility. This degradation is not solely a result of climate change—human activities including overgrazing, deforestation, and unsustainable farming practices also contribute significantly. However, climate change exacerbates these processes and makes recovery more difficult.
Impacts on Agricultural Production
Crop Yield Reductions and Production Challenges
The agricultural sector bears the brunt of climate change impacts in the Sahel, with projections indicating severe reductions in crop yields in the coming decades. The Intergovernmental Panel on Climate Change (IPCC) predicts that agricultural yields will fall by 20% per decade by the end of the 21st century in some areas of the Sahel. Such dramatic declines would have catastrophic consequences for food security and rural livelihoods.
According to a recent report, yields are projected to drop by around 11 percent by 2050. Even these more conservative estimates represent significant challenges for a region where population is growing rapidly and agricultural productivity is already marginal in many areas. The combination of reduced yields and increasing population creates a widening gap between food production and food needs.
Agriculture is the sector absorbing the highest share of drought impacts on the economy, societies, and human well-being. The rural nature of the region and its high dependance on rain-fed agriculture increase the exposure of people to this risk, leading to greater humanitarian consequences when drought materializes. This vulnerability is compounded by limited access to irrigation, improved seeds, fertilizers, and other inputs that could help buffer against climate variability.
This increasingly erratic nature of rainfall poses numerous challenges to farmers in the Sahel, who need to choose the right time for planting, or the right type of seeds depending on expected rainfall amounts. This is to avoid that a long dry spell, or a limited amount of rainfall, may undermine the growth of their crops on which their entire family relies. Traditional knowledge about planting times and crop selection, developed over generations, is becoming less reliable as climate patterns shift.
Impacts on Pastoralism and Livestock Production
Pastoralism, the practice of raising livestock through seasonal migration to access pasture and water, is a crucial livelihood strategy in the Sahel. However, climate change is fundamentally disrupting traditional pastoral systems. Insufficient rain-fed irrigation means that crops fail or are destroyed, while livestock struggle to find water for drinking and sufficient pasture.
Farming and cattle rearing have also been affected by families constantly on the move and harsh weather conditions. Climate-related shocks further amplify risks, intensifying competition over scarce natural resources such as land and water. The scarcity of resources is altering traditional transhumance routes and timing, bringing pastoralists into conflict with settled farmers.
The depletion of natural resources in the region has become a source of conflict between farmers and herders, especially as climate change has altered the routes and periods of livestock transhumance, which now often coincide with those of the land being cultivated. These conflicts can escalate into violence, further destabilizing communities already stressed by climate impacts and contributing to displacement and insecurity.
Water Scarcity and Irrigation Challenges
Over 90% of Sahelian farmers depend on rain-fed agriculture and pastoralism for their livelihoods, particularly in areas affected by insecurity. This near-total dependence on rainfall makes communities extremely vulnerable to any changes in precipitation patterns. While irrigation could provide a buffer against rainfall variability, infrastructure development has been limited.
The scarcity of water resources threatens livelihoods across the Sahel. Droughts are becoming more and more intense, reducing water availability for both human consumption and agricultural use. Surface water sources are becoming less reliable, while traditional open-well type water supply systems are no longer viable in the region due to declining water tables.
The challenges of water access extend beyond agriculture. The technical capacities and financial means of the Sahelian countries to carry out deep drilling are severely limited, making it difficult to access deeper groundwater resources that might be more reliable. This creates a situation where communities know water exists underground but lack the resources to access it.
Food Security Crisis in the Sahel
Current State of Food Insecurity
The Sahel region faces one of the world’s most severe food security crises, with climate change acting as a major driver of hunger and malnutrition. The African Sahel includes countries in the world where food insecurity is the most severe. For more than 10 years, acute food insecurity has been reaching its highest level in Africa. This chronic crisis affects tens of millions of people and shows little sign of improvement.
In 2024, the food and nutrition situation remains extremely worrying in the Sahel and West Africa: over 38 million people are currently experiencing acute food and nutrition insecurity. This staggering number represents a humanitarian emergency of massive proportions, with millions of people unable to access sufficient, nutritious food to meet their basic needs.
In 2023, about 45,000 people suffered catastrophic levels of hunger in the Sahel, including 42,000 in Burkina Faso and 2,500 in Mali. Catastrophic hunger represents the most severe level of food insecurity, where starvation and death are imminent without immediate assistance. The concentration of these cases in Burkina Faso highlights how conflict and climate change can interact to create extreme humanitarian emergencies.
Food Security Rankings and Comparative Analysis
The Global Food Security Index shows Sahelian countries are lagging behind in the ranking: Burkina Faso is 89th, Niger 97th, Chad 103rd, and Nigeria 107th out of 113 countries included in the ranking. These rankings reflect multiple dimensions of food security, including availability, access, quality, and sustainability of food systems. The consistently poor performance of Sahelian countries across these metrics demonstrates the depth and breadth of the food security challenge.
Agricultural production remains insufficient to adequately meet the population’s food needs in the Sahel. This production gap means that the region is increasingly dependent on food imports and humanitarian assistance to meet basic nutritional requirements. Projected annual food imports by African countries are expected to increase by a factor of three, from US $35 billion to US $110 billion by 2025, reflecting growing dependence on external food sources.
Malnutrition and Health Impacts
Food insecurity in the Sahel translates directly into malnutrition, particularly affecting children and pregnant women. Chronic malnutrition stunts physical and cognitive development in children, creating long-term consequences that extend far beyond immediate hunger. Acute malnutrition, or wasting, can be life-threatening and requires urgent medical intervention.
The health impacts of food insecurity extend beyond malnutrition itself. Undernourished individuals are more susceptible to infectious diseases, and malnutrition can impair immune function, creating a vicious cycle of illness and poor nutrition. Women and children face particular risks, with maternal malnutrition affecting pregnancy outcomes and child development.
The situation has been described by humanitarians as a chronic hunger emergency. Unlike acute emergencies that spike and then resolve, chronic hunger persists year after year, eroding human capital and development potential. This chronicity makes it difficult to mobilize sustained international attention and resources, even as needs remain desperately high.
Climate Change, Conflict, and Displacement
The Climate-Conflict Nexus
Climate change does not operate in isolation in the Sahel—it interacts with and exacerbates existing social, economic, and political tensions. Considering the many diverse and often intertwined causes of food insecurity, it would not be true to consider climate change as the only driving factor. However, climate change acts as a threat multiplier, intensifying competition over scarce resources and contributing to instability.
Key climate factors such as desertification interact with ethnic and economic tensions, exacerbating violence between pastoral and farming groups competing over degraded productive land and water resources. Mounting climate pressures act as threat multipliers for both violent conflict and internal displacement across countries spanning Senegal to Sudan. These conflicts can escalate from local disputes into broader insecurity that undermines governance and development.
Climate change, which threatens the integrity of ecosystems already weakened by a rapidly growing population, will further exacerbate competition over natural resources and lead to population movements and conflicts in the region. As resources become scarcer, the stakes of resource conflicts increase, and traditional mechanisms for managing disputes may break down under pressure.
Displacement and Migration Patterns
Nearly four million people across Africa’s vast semi-arid Sahel region have been uprooted by a volatile mix of conflict, hunger and climate change. The figure represents a two-thirds increase in displacement over the past five years, with Burkina Faso, Mali and Niger at the epicentre of overlapping humanitarian emergencies. This massive displacement creates secondary humanitarian challenges, as displaced populations require shelter, food, water, and protection.
Across the central Sahel, people are being driven from their homes by violence, insecurity, and the devastating effects of climate change. Women and children make up 80 per cent of the displaced population, and the protection risks they face are severe. Displaced women and children face heightened risks of gender-based violence, trafficking, exploitation, and family separation.
In the Sahel countries approximately 125 million people in total have been affected by drought between 1970 and 2022 (average of 2.5 Million people/year). While not all those affected by drought are displaced, these numbers illustrate the massive scale of climate impacts on human populations in the region. Many people are displaced multiple times, moving from rural areas to cities or across borders in search of safety and livelihoods.
Urbanization and Resource Pressure
The current context, in addition to the climate of uncertainty prevailing in rural areas slowly degraded by climate change, has been pushing many people to migrate to urban centers. The latter are considered to be safe, less dependent on economic activities based on natural resources and therefore less affected by natural phenomena. This concentration of population in urban areas is likely to lead to overexploitation of natural resources and water supply networks.
Sahelian countries shall double their population in the space of the next generation (20–25 years). While the region shall experience a considerable urbanization trend, large shares of the population will continue to rely on agriculture for their food and income. This demographic pressure, combined with climate change, creates enormous challenges for both rural and urban areas.
The population of the six French-speaking countries of the Sahel will increase six-fold, reaching 540 million by 2100, according to UN projections. This population growth will occur in a context of increasing climate stress, requiring massive investments in adaptation, infrastructure, and sustainable development to avoid catastrophic outcomes.
Adaptation Strategies and Climate-Smart Agriculture
Climate-Smart Agricultural Practices
Adaptive policies are key to mitigating the adverse effects of climate change. These include a wide array of practices, investments, innovations, and policies intended to build resilience to climate change. Climate-smart agriculture (CSA) represents a comprehensive approach to addressing the interlinked challenges of food security, adaptation, and mitigation in agricultural systems.
Climate-smart agriculture in the Sahel includes practices such as improved water management, soil conservation techniques, agroforestry, crop diversification, and the use of drought-resistant crop varieties. These practices aim to increase productivity while building resilience to climate shocks and reducing greenhouse gas emissions where possible. For example, agroforestry systems that integrate trees with crops can improve soil fertility, provide additional income sources, and help regulate microclimates.
Improving the yield and competitiveness of the agricultural sector and supporting the adaptation of farming practices to climate change are essential to reducing poverty in the region. This requires not only technical interventions but also policy support, access to finance, and strengthening of farmer organizations and extension services.
Water Management and Irrigation Development
Given the critical importance of water scarcity in limiting agricultural production, improved water management is central to adaptation efforts in the Sahel. In addressing the adverse effects of change in rainfall on agricultural sustainability, the policymakers in the Sahel region in particular and Africa as a whole should embark on a policy mix by embanking on mitigating policy response towards ensuring sustainable agricultural production via irrigation which is the best mode of water provisions without causing negative spilliovers on the environment.
Irrigation development can take many forms, from large-scale infrastructure projects to small-scale, farmer-managed systems. Drip irrigation and other water-efficient technologies can maximize the productivity of limited water resources. Rainwater harvesting techniques can capture and store water during the rainy season for use during dry periods. Improved watershed management can enhance groundwater recharge and reduce soil erosion.
However, irrigation development must be carefully planned to ensure sustainability. Overexploitation of groundwater resources can lead to aquifer depletion, while poorly designed irrigation systems can cause waterlogging and salinization. Community participation in planning and management is essential to ensure that irrigation systems meet local needs and are maintained over the long term.
Drought Monitoring and Early Warning Systems
Effective drought monitoring and early warning systems can help communities prepare for and respond to climate shocks before they become full-blown crises. Stronger monitoring and forecasting help turn data into timely advice. Early warnings enable pastoralists and farmers to move herds and adjust planting decisions. These systems combine climate data, satellite imagery, and ground observations to detect emerging droughts and forecast their likely impacts.
Early warning information is only valuable if it reaches vulnerable communities in time and in forms they can use. This requires investment in communication infrastructure, translation of technical information into actionable advice, and building trust between forecasters and farmers. When early warnings are effective, they can enable anticipatory action—interventions taken before a crisis fully develops to reduce its impact.
While prospects for the Sahel present challenges like frequent hazards and unpredictable climate, alongside decreasing humanitarian funding, recent humanitarian practices on anticipatory action (AA) offer hope. These innovative practices, which combine climate forecasts, pre-agreed funding, and locally led early action may enable fast-growing Sahelian societies and their active youth to proactively address climate risks before they escalate into humanitarian emergencies.
Soil Conservation and Land Restoration
Addressing land degradation is crucial for maintaining agricultural productivity and building resilience to climate change. Soil conservation techniques such as contour plowing, terracing, and the construction of stone bunds can reduce erosion and improve water infiltration. Cover cropping and mulching can protect soil from wind and water erosion while adding organic matter.
Large-scale land restoration initiatives are also underway in the Sahel. The Great Green Wall initiative, for example, aims to restore degraded landscapes across the width of Africa, creating a mosaic of green and productive landscapes. While progress has been uneven, successful restoration projects have demonstrated that degraded lands can be rehabilitated through sustained effort and appropriate techniques.
Farmer-managed natural regeneration (FMNR) has proven particularly successful in parts of the Sahel, particularly in Niger. This technique involves protecting and managing the natural regeneration of trees and shrubs from existing root systems, rather than planting new trees. FMNR is low-cost, can be implemented by farmers themselves, and has led to the regeneration of millions of hectares of land in some areas.
Policy Responses and International Cooperation
Regional Cooperation Initiatives
Addressing climate change and food security in the Sahel requires coordinated action across national boundaries, as climate impacts and their consequences do not respect political borders. Regional organizations and initiatives play crucial roles in facilitating cooperation and coordinating responses.
Working with Sahelian partners, the members of the Sahel Alliance are helping to improve resilience to shocks by strengthening food security and adapting to climate change. The Sahel Alliance brings together multiple development partners to coordinate investments and interventions across the region, aiming to improve effectiveness and avoid duplication.
In April 2025, Sahel countries adopted the Sahel Irrigation Strategy (“Dakar +10”), a shared plan with milestones through 2055. Its goals include scaling up high-performing, sustainable irrigation, better integrating shared and groundwater resources, and improving food security through coordinated action. Such regional strategies provide frameworks for coordinated investment and policy development.
Humanitarian Assistance and Funding Challenges
Estimates indicate that more than 32 million people across the wider Sahel require humanitarian assistance and protection – many of them urgent food and nutrition interventions. Meeting these massive humanitarian needs requires sustained international support, yet funding often falls far short of requirements.
UNHCR said humanitarian access and funding have reached breaking point. Its 2025 appeal for $409.7 million to cover needs in the Sahel is only 32 per cent funded, forcing cuts to registration, shelter, education and health programmes. This funding gap means that humanitarian organizations must make difficult choices about which needs to prioritize, often leaving vulnerable populations without adequate assistance.
The chronic nature of the crisis in the Sahel makes it difficult to maintain donor attention and funding. Unlike sudden-onset emergencies that generate intense media coverage and public sympathy, slow-onset crises like drought and chronic food insecurity struggle to compete for limited humanitarian resources. This creates a situation where needs are highest precisely when funding is most difficult to secure.
Building Resilience Through Development
Policymakers should be proactive by embarking on policies and programs that would build the resilience and adaptation of the region ahead of the future adverse effects of agriculturally induced climatic change. This requires shifting from purely reactive humanitarian responses to longer-term development investments that build resilience and reduce vulnerability.
Resilience-building involves multiple dimensions: economic resilience through livelihood diversification and access to financial services; social resilience through strengthening community organizations and social safety nets; and environmental resilience through sustainable natural resource management. These different dimensions are interconnected—for example, economic resilience provides resources that can be invested in environmental conservation.
The World Bank Group, together with the Government of Burkina Faso and the International Institute for Water and Environmental Engineering (2iE), launched the Defying Drought Impact Program to help countries scale up drought-resilience measures. The first cohort from Burkina Faso, Chad, Mali, Mauritania, Niger, and Senegal will work with peers and experts to adapt proven measures to their national systems, turning good practices into scalable and country-owned action.
Future Projections and Long-Term Outlook
Climate Model Projections for the Sahel
Climate projections indicate that the Sahel will be one of the areas of the globe to be most harshly affected by climate change in the future, leading to considerable changes to societies, economies, as well as deeply impacting rural communities. These projections are based on sophisticated climate models that simulate how the Earth’s climate system will respond to increasing greenhouse gas concentrations.
However, there is considerable uncertainty about exactly how rainfall patterns will change in the Sahel. No consensus has emerged regarding the impact of anticipated GHG impacts on the water balance of the Sahel in the second half of the 21st century. Some studies project wetter conditions while others predict more frequent droughts, and each describes the atmospheric processes associated with its prediction. This uncertainty makes planning for the future particularly challenging.
Some climate models suggest concerning trends for the coming decades. In the first few decades of the 21st century, there is some moistening or at least a cessation of the drying trend, but this is followed by rapid drying, with rainfall decreasing below that of the observed 1980s drought for the A1B and A2 scenarios. If such projections prove accurate, the Sahel could face drought conditions even more severe than those experienced in the catastrophic 1970s and 1980s.
Economic and Social Implications
Climate change is expected to have significant economic repercussions for the Sahelian countries: loss of GDP, lower agricultural yields, reduced labour productivity, as well as damage to infrastructure caused by flooding. These economic impacts will compound existing development challenges and could trap countries in cycles of poverty and vulnerability.
These events and trends have many adverse consequences on levels of growth, poverty, and food security, which are all predicted to further deteriorate in the near and longer term. Without substantial investments in adaptation and development, climate change could reverse hard-won development gains and push millions more people into poverty and food insecurity.
The people most affected will be the poor and most vulnerable populations, in particular women, young people, ethnic minorities, nomadic groups, displaced persons and people with reduced mobility. Climate change impacts are not distributed equally—they fall most heavily on those with the least resources to adapt, exacerbating existing inequalities.
Opportunities and Pathways Forward
Despite the daunting challenges, there are reasons for hope and opportunities for positive change in the Sahel. The region has demonstrated remarkable resilience in the face of past climate shocks, and communities possess deep knowledge about managing variability and scarcity. Building on this existing resilience while introducing appropriate innovations offers pathways toward more sustainable and secure futures.
Technological innovations, from improved crop varieties to mobile phone-based early warning systems, offer new tools for adaptation. Renewable energy technologies can provide power for irrigation and processing without contributing to climate change. Improved weather forecasting and climate information services can help farmers make better decisions about planting and management.
The Sahel’s young and growing population, while presenting challenges, also represents an opportunity. Young people can be agents of change, adopting new technologies and practices more readily than older generations. Investing in education, skills training, and employment opportunities for youth can help build more resilient and prosperous societies.
The program builds on what we know already works. Experience across the region points to practical measures that reduce losses during dry years. These are not new ideas but they are lessons that have been refined by practitioners, tested in programs across the region, and strengthened by shared evidence. Scaling up proven approaches while remaining flexible and adaptive to local contexts offers the best path forward.
Key Challenges and Vulnerabilities
Understanding the full scope of challenges facing the Sahel requires examining the interconnected vulnerabilities that compound climate impacts:
- Unpredictable rainfall patterns: The increasing variability and intensity of rainfall makes agricultural planning extremely difficult, with farmers facing both droughts and floods within the same growing season.
- Decreased crop yields: Rising temperatures, water stress, and land degradation are reducing agricultural productivity precisely when population growth is increasing food demand.
- Soil erosion and degradation: Wind and water erosion, exacerbated by climate change and unsustainable land use, are removing fertile topsoil and reducing the land’s productive capacity.
- Increased food prices: Production shortfalls, combined with growing demand and disrupted markets, are driving food prices higher and making nutritious food less accessible to poor households.
- Rising malnutrition rates: Food insecurity translates directly into malnutrition, particularly affecting children and pregnant women, with long-term consequences for health and development.
- Water scarcity: Declining rainfall, increased evaporation, and overexploitation of water resources are creating severe water stress for both human consumption and agricultural use.
- Conflict and insecurity: Competition over scarce resources, combined with other drivers of conflict, is creating widespread insecurity that disrupts agriculture and displaces populations.
- Limited adaptive capacity: Poverty, weak institutions, limited infrastructure, and low levels of education constrain the ability of communities and governments to adapt to climate change.
- Rapid population growth: The Sahel’s population is growing faster than almost anywhere else in the world, increasing pressure on already stressed resources and systems.
- Funding gaps: Humanitarian and development funding consistently falls short of needs, limiting the scale and effectiveness of interventions.
Conclusion: Navigating an Uncertain Future
The Sahel region stands at a critical juncture, facing climate change impacts that threaten to undermine development gains and push millions more people into poverty and food insecurity. The challenges are immense and interconnected, spanning environmental, social, economic, and political dimensions. Climate change is not the only driver of food insecurity and humanitarian crisis in the Sahel, but it acts as a powerful threat multiplier that exacerbates existing vulnerabilities and creates new challenges.
The agricultural sector, which employs the majority of the population and provides the foundation for food security, is particularly vulnerable to climate impacts. Declining and increasingly erratic rainfall, rising temperatures, land degradation, and extreme weather events are all undermining agricultural productivity. These impacts ripple through entire societies, affecting nutrition, health, economic opportunities, and social stability.
Yet the Sahel’s story is not one of inevitable decline. Communities across the region have demonstrated remarkable resilience in the face of climate variability, drawing on deep knowledge and adaptive strategies developed over generations. Innovations in climate-smart agriculture, water management, early warning systems, and land restoration offer pathways toward more resilient and productive agricultural systems. Regional cooperation initiatives and international support, when well-designed and adequately funded, can help scale up successful approaches and build adaptive capacity.
The future of the Sahel will depend on choices made today—by local communities, national governments, regional organizations, and the international community. Investments in adaptation, sustainable development, and resilience-building can help communities navigate climate change while improving livelihoods and food security. Conversely, continued underinvestment and short-term thinking risk allowing climate change to overwhelm adaptive capacity, leading to humanitarian catastrophes and development reversals.
Addressing the climate and food security crisis in the Sahel requires sustained commitment, adequate resources, and approaches that combine immediate humanitarian assistance with longer-term development and adaptation investments. It requires listening to and supporting local communities, who understand their environments and possess valuable knowledge about managing variability and scarcity. It requires coordination across sectors and borders, recognizing that climate change and its impacts transcend administrative boundaries.
Most fundamentally, it requires recognizing that the Sahel’s challenges are not isolated regional problems but part of the global climate crisis. The greenhouse gas emissions driving climate change in the Sahel come primarily from outside the region, yet Sahelians bear disproportionate impacts. Climate justice demands that those who have contributed most to the problem support those suffering its worst consequences. The international community has both a moral obligation and a practical interest in supporting the Sahel’s adaptation and development—instability and humanitarian crisis in the region have consequences that extend far beyond its borders.
For more information on climate change impacts in Africa, visit the Intergovernmental Panel on Climate Change. To learn about food security monitoring in the Sahel, see the Famine Early Warning Systems Network. For updates on humanitarian needs and responses, visit ReliefWeb. To explore climate adaptation initiatives in the region, check the Sahel Alliance. For research on Sahel climate and agriculture, see the CGIAR research centers working in the region.
The path forward for the Sahel is challenging but not predetermined. With adequate support, appropriate policies, and sustained commitment, the region can build resilience to climate change while improving food security and livelihoods for its growing population. The stakes could not be higher—for the tens of millions of Sahelians whose lives and futures hang in the balance, and for a world that cannot afford to abandon one of its most vulnerable regions to the ravages of climate change.