Nigeria’s Unbearable Heat: What El Niño Means, What Scientists Are Saying and What Could Happen Next

The heat is becoming a major talking point in Nigeria, but how much of it is linked to El Niño, and what should Nigerians expect in the coming months?

As Nigerians complain about hot weather, uncomfortable nights and the difficulty of keeping cool without reliable electricity, concerns are growing over the developing El Niño climate phenomenon.

On October 22, 2026, A projection that Nigeria could record 31,400 additional heat-related deaths between September 2026 and February 2027. The estimate has drawn attention to the potential health consequences of rising temperatures. The Cable

What's El Niño?

El Niño is a natural climate phenomenon that occurs when surface waters in the central and eastern tropical Pacific Ocean become unusually warm. It can influence temperatures, rainfall and weather patterns across different parts of the world.

The World Meteorological Organization (WMO) says the 2023-2024 El Niño was among the five strongest recorded. The organisation also explained that greenhouse gas emissions from human activities remain the main driver of long-term global warming. WMO

Nigeria's concerns did not begin with the recent reports about heat-related deaths. Here are some key developments:

• February 11, 2026: The Nigerian Meteorological Agency (NiMet) published its 2026 Seasonal Climate Prediction, providing the country's initial outlook for rainfall and temperatures. NiMet

• June 2, 2026: The WMO issued an update urging countries to prepare for the developing El Niño.

• August 13, 2026: NiMet published an updated seasonal forecast confirming the onset of a strong El Niño event and examining its potential influence on weather conditions.

• September 3, 2026: The WMO warned that El Niño was expected to become very strong, increasing the risks of extreme weather into 2027. WMO

• October 22, 2026: A reporter  reported the projection of 31,400 additional heat-related deaths in Nigeria between September 2026 and February 2027. The Cable

• October 24, 2026: Premium Times published guidance on protecting oneself as extreme heat affects parts of Nigeria, highlighting the risks of dehydration, heat exhaustion and heatstroke. Premium Times

The discussion has moved beyond the discomfort of hot weather to concerns about public health, electricity supply, agriculture and household expenses.

Researchers at the University of Chicago's Climate Impact Lab estimate that the developing El Niño could contribute to approximately 451,000 additional heat-related deaths worldwide during the period covered by their research. Nigeria's projected figure is 31,400. FactCheckAfrica 

These numbers are estimates, not confirmed deaths or guaranteed outcomes.

Meanwhile, October 26 highlighted how Nigeria's unreliable electricity supply could make extreme heat harder to manage. Without consistent power, households may struggle to run fans and air conditioners, while businesses face additional generator and cooling costs. BusinessDay

On social media, personal experiences of hot nights and power outages have added to public concern. However, individual complaints alone cannot establish that El Niño is responsible for every instance of unusually hot weather.

Nigeria and the rest of the world have experienced El Niño before.

The 2023-2024 event was particularly significant. On July 4, 2023, the WMO officially announced the onset of El Niño conditions, warning that the phenomenon could increase the likelihood of temperature records and extreme heat. WMO

By March 5, 2024, the organisation reported that the event had peaked as one of the five strongest on record. It warned that its effects would continue even as the event weakened.

The WMO also noted that El Niño and human-driven climate change can combine to intensify extreme temperatures. However, El Niño's effects differ across regions, and its presence does not automatically mean every country will experience the same weather conditions. WMO

The potential effects extend beyond discomfort. Prolonged extreme heat can increase the risk of dehydration and heat-related illness, while changes in rainfall can affect farming, water availability and food production.

The risks may differ between northern and southern Nigeria. NiMet's forecasts and subsequent updates are therefore important for understanding local conditions rather than assuming that the entire country will experience identical impacts.

For ordinary Nigerians, taking breaks from intense sunlight, drinking sufficient water, reducing strenuous outdoor activities during the hottest hours and checking official weather and health advisories can help reduce exposure to heat.

The concern is not simply whether Nigerians will experience hotter days. It is whether households, hospitals, farmers, workers and public services are adequately prepared if extreme heat becomes more frequent or intense.

The projected 31,400 additional heat-related deaths should be understood as a warning about potential risks, not an inevitable outcome. Better preparation, reliable public information and practical measures to protect vulnerable people can make a difference.

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