The World Meteorological Organisation, WMO, on Monday warned that the year 2027 could be the hottest on record, with a strong El Niño expected to bring further extreme heat.
The warning came as world leaders gathered for the UN Climate Change Conference, COP31, in Turkey.
WMO Secretary General Celeste Saulo said El Niño acts as a “risk multiplier and heatwaves, tropical cyclones, and rainstorms are intensifying faster than the historical baselines.”
A new WMO report on the state of the climate shows that each of the last 12 years was the warmest since records began, and that the last four years were the four warmest on record.
According to the report, the average surface temperature from January to September 2026 was about 1.47 degrees Celsius above pre-industrial levels worldwide.
The analysis’s margin of uncertainty is 0.13 degrees, meaning the world may have exceeded the critical 1.5-degree threshold. The world last exceeded that target in 2024.
According to WMO, extreme weather, which occurs more frequently due to the climate crisis, had devastating effects around the globe this year.
According to preliminary estimates, heatwaves, drought and wildfires in Europe led to more than 30,000 excess deaths this year.
Extreme heat in India in April also affected 146.5 million people, the WMO noted, while more than 1,300 people died in the glacier collapse and flash flood in the Himalayas in August.
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