An unusually powerful El Niño is currently underway, with researchers estimating it could drive 451 000 extra heat-related deaths worldwide between June 2026 and February 2027 compared to a normal year.
Global Death Toll Projections and Hard-Hit Regions
The stark mortality projections come from the Climate Impact Lab, a research collaboration at the University of Chicago. Researchers estimate that 239 000 of these additional heat-related deaths will occur during the six-month period from September through February.
Land temperatures worldwide are projected to climb roughly 1.2 degrees Celsius higher than normal over the coming months, while the frequency of extremely hot days could surge by 44 percent. For the late-year period, specific countries face particularly steep projections for excess mortality:
- Nigeria: 31 400 deaths
- Indonesia: 19 300 deaths
- Sudan: 17 500 deaths
- India: 15 800 deaths
- Brasil: 13 300 deaths
Researchers project a combined 66 800 extra deaths across the Sahel region in Africa. Climate Impact Lab notes these figures are probabilistic forecasts, and the final human toll will depend heavily on the preventative measures individual governments put in place.
How Strong Is This El Niño Event?
Researchers at Columbia University’s climate institute report that this year’s El Niño could rank among the strongest ever recorded. Ocean measurements from mid-September indicate the warming phase is already powerful, and all 22 of the institute’s forecasting models point toward further strengthening. Whether the event breaks historical records remains uncertain until it reaches its peak.
UN Secretary-General António Guterres issued a stark warning regarding the trajectory of global climate patterns. “El Niño is not just on the doorstep. It is inside the house and turning up the heat,” Guterres said during the summer, cautioning that the phenomenon was still in its early stages.
Did You Know?
El Niño is a natural climate pattern that occurs every few years when the surface of the equatorial Pacific Ocean becomes unusually warm. According to the World Meteorological Organization (WMO), this warmth alters atmospheric circulation, increasing the risk of severe drought and heatwaves in some regions while driving heavy rainfall and floods in others.
Potential Weather Impacts in Norway
However, the phenomenon can indirectly influence winter weather patterns by increasing the probability of a mild early winter followed by a colder mid-to-late winter.
Meteorologists emphasize that this does not constitute a guaranteed seasonal forecast for Norway, as local atmospheric systems create high variability and make long-term regional predictions challenging.
Can the Projected Fatalities Be Prevented?
Scientists behind the mortality models insist that many of these deaths are preventable through proactive intervention. The Climate Impact Lab highlights that targeted local measures can still protect vulnerable populations and preserve tens of thousands of lives.
Recommended mitigation steps include implementing early heat warnings, securing reliable drinking water supplies, establishing cooling shelters, and providing occupational safeguards for outdoor workers. Researchers released these projections early specifically to give high-risk nations adequate time to prepare.
Frequently Asked Questions
What causes an El Niño event?
El Niño is triggered when sea surface temperatures in parts of the Pacific Ocean at the equator become unusually warm, altering global wind patterns and ocean currents.
How long is the current El Niño expected to last?
The World Meteorological Organization expects the current El Niño cycle to remain strong and persist through February 2027.
Which areas face the highest risk from the extreme heat?
According to Climate Impact Lab projections, countries such as Nigeria, Indonesia, Sudan, India, and Brazil face the highest numbers of estimated excess heat-related deaths.
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