The world's oceans have reached their highest recorded August temperature, adding to growing evidence of accelerating global warming.
On August 22, the European Union's Copernicus Climate Change Service recorded a global average ocean surface temperature of 21.1°C, narrowly exceeding the previous daily record of 21.09°C set in March 2024.
Scientists say a developing El Niño in the Pacific is adding heat to oceans already warmed by decades of human-driven climate change. The World Meteorological Organization expects the phenomenon to strengthen in the coming months.
Climate scientists say the new record is consistent with the long-term warming trend and could be broken again if ocean temperatures continue rising. European waters, including parts of the Atlantic and Mediterranean, are also experiencing unusually high temperatures.
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World's oceans hit highest temperature on record as El Niño grows https://t.co/j0ozMtoYVJ
— BBC News (UK) (@BBCNews) August 24, 2026
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