For many citizens, recent rainfall in parts of the country is a matter of great relief, considering the grave discomfort occasioned by heat days or weeks past. But most parts of Nigeria are still reeling under scorching sun. Yet, Nigeria can no longer afford to dismiss extreme heat as a temporary seasonal discomfort. The latest warning by the Nigerian Meteorological Agency (NiMet) that temperatures could rise to as high as 45 degrees Celsius in parts of the country is yet another reminder that climate change has become an immediate national emergency.

What is unfolding across the country is not simply hot weather associated with the dry season; it is a growing environmental and public health crisis with dangerous implications for human survival, economic productivity, food security and social stability.

According to NiMet, states such as Niger, Kebbi, Sokoto, Zamfara, Katsina, Kano, Yobe, Jigawa, Bauchi, Gombe, Borno and Adamawa are expected to experience severe heat conditions. The agency also warned that inland parts of southern Nigeria would not be spared from the impacts.

The projected temperatures, between 40 and 45 degrees Celsius in the North, 35 and 38 degrees Celsius in the Middle Belt, and 33 to 35 degrees Celsius in the South are dangerously high and capable of causing serious health complications. The consequences of prolonged exposure to extreme heat are already well known. Heat stress can trigger dehydration, heat exhaustion, heat stroke, respiratory distress and cardiovascular complications. For vulnerable groups such as children, pregnant women, outdoor workers and the elderly, the danger is even greater. In communities with poor access to clean water, electricity and healthcare, the risks multiply significantly.

Particularly troubling is NiMet’s warning that the combination of extreme heat and dust particles in the atmosphere could increase the likelihood of meningitis outbreaks in northern Nigeria. This is not speculative. Nigeria has repeatedly experienced seasonal outbreaks of cerebrospinal meningitis, especially in overcrowded and poorly ventilated communities across the northern states.

Rising temperatures create ideal conditions for the spread of such diseases. Sadly, many public health institutions remain underfunded and ill-equipped to respond effectively to large-scale outbreaks.

The latest advisory once again exposes the country’s poor level of preparedness for climate-related disasters. While flooding occasionally receives emergency attention because of its dramatic and visible impact, heat waves remain largely ignored despite their deadly consequences.

Nigeria lacks a coordinated national heat response strategy. There are no designated public cooling shelters; while limited public awareness campaigns, inadequate emergency health systems and weak urban planning policies to reduce heat exposure all combine to aggravate the problem.
The situation is especially difficult for low-income Nigerians. Millions live in overcrowded homes with poor ventilation and unreliable electricity supply. In many urban slums and rural settlements, residents endure long hours without power while temperatures continue to rise. Access to air-conditioning or cooling systems remains a luxury beyond the reach of most citizens. Even hospitals, schools and public institutions often lack stable electricity and cooling infrastructure, making them unsafe during periods of extreme heat.
The economic consequences of rising temperatures are equally alarming. Nigeria’s economy depends heavily on outdoor labour. Farmers, construction workers, street traders, transport operators and artisans spend long hours under harsh weather conditions. Extreme heat reduces productivity, increases fatigue and heightens the risk of accidents and illness. Agricultural production also suffers as rising temperatures accelerate evaporation, dry up water sources and worsen desertification in northern Nigeria.

Food security is therefore increasingly threatened. Farmers already battling insecurity, flooding and poor infrastructure must now confront worsening drought conditions and declining soil moisture. Reduced agricultural yields could further worsen inflation and deepen hunger across the country. The impact on livestock production is equally severe, as excessive heat affects animal health, fertility and water availability.

The warning from researchers at the University of Oxford that Nigeria could become one of the countries’ most affected by dangerously hot days by 2050 should compel urgent national reflection. Climate change is no longer a future concern discussed only at international conferences. It is already affecting livelihoods, public health and economic development across Nigeria. The evidence is visible in rising temperatures, prolonged droughts, destructive flooding, coastal erosion, shrinking forests and changing rainfall patterns.

Unfortunately, Nigeria’s environmental governance remains weak and inconsistent. Gas flaring continues despite repeated government promises to end it. Deforestation is occurring at an alarming rate as forests are cleared for fuel wood, farming and urban expansion.    Wetlands and green spaces are disappearing rapidly. Waste management systems remain inadequate, while pollution levels continue to rise in major cities. These environmental failures are intensifying the climate crisis and increasing the country’s vulnerability to extreme weather conditions.

Government at all levels must therefore treat heat waves as a serious national emergency. A comprehensive national heat-health action plan should be developed immediately. Such a framework should integrate weather forecasting, emergency healthcare response, public awareness campaigns and community-based support systems. State governments should establish cooling centres in schools, community halls and public institutions where vulnerable residents can seek temporary relief during periods of intense heat.

Urban planning policies must also change. Nigerian cities are increasingly becoming heat traps because of unchecked urbanisation, disappearing vegetation and excessive concrete surfaces that absorb and retain heat. Authorities should embark on aggressive tree-planting campaigns, restore urban green spaces and encourage climate-sensitive building designs that improve ventilation and reduce heat absorption. Environmental regulations must also be enforced strictly to prevent further destruction of forests and wetlands.

Public health education is equally essential. Citizens must be encouraged to stay hydrated, avoid unnecessary exposure to direct sunlight, wear light clothing and reduce strenuous activities during peak heat periods.

Parents and caregivers should be educated on the dangers of leaving children inside parked vehicles or poorly ventilated rooms. Schools, religious institutions, markets and media organisations should be mobilised to spread awareness about heat-related risks and preventive measures.

The private sector also has a role to play. Employers must adopt workplace safety guidelines that protect workers exposed to extreme temperatures. Flexible working hours, access to drinking water and shaded rest areas should become standard practice, especially in construction sites, factories and farms.

Climate adaptation can no longer remain a secondary issue in national planning. Nigeria must invest seriously in renewable energy, sustainable agriculture, climate-resilient infrastructure and environmental restoration projects. International climate financing opportunities should also be pursued aggressively to support adaptation programmes.

NiMet’s early warning is notable. But warnings alone are not enough. What Nigeria needs now is coordinated action, strong political will and sustained investment in climate resilience. Extreme heat is no longer an isolated weather event. It is a growing public health threat, an economic challenge and an environmental emergency. Ignoring it will only increase suffering, deepen poverty and expose millions of Nigerians to avoidable risks in the years ahead.