August 2026 confirmed as hottest month on record globally: Copernicus cites climate change and El Niño

August 2026 was the hottest month ever recorded globally, with an average surface air temperature of 16.96 degrees Celsius, according to the Copernicus Climate Change Service. The month surpassed the joint record set in August 2023 and August 2024, with temperatures 1.65 degrees Celsius above the pre-industrial average, marking the first time since November 2025 that global temperatures exceeded the 1.5-degree threshold.
The Copernicus report also noted record ocean temperatures, with the average sea surface temperature in extrapolar regions reaching 21.07 degrees Celsius, matching the highest monthly value ever recorded. A daily peak of 21.11 degrees Celsius was observed in the same areas. The warming extended to Europe, where Western Europe experienced its warmest summer on record, with average temperatures 2.54 degrees Celsius above the 1991-2020 average.
El Niño conditions in the Pacific intensified during the period, with the U.S. National Oceanic and Atmospheric Administration estimating a 75 percent chance the phenomenon would reach historic strength by October-December 2026. The agency reported record sea surface temperatures in the tropical Pacific, with some deeper waters more than 10 degrees Celsius above average. Copernicus linked the strengthening El Niño to extreme weather, including intensified seasonal fires in Indonesia.
Samantha Burgess, strategic lead for climate at the European Centre for Medium-Range Weather Forecasts, stated that the observations demonstrate how climate change is driving extremes across the atmosphere and oceans, with impacts increasingly felt by communities, economies, and ecosystems worldwide .
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