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World's oceans hit hottest temperature ever recorded in August as El Niño takes hold

  • On Monday, the European climate service Copernicus announced world ocean temperatures reached a record 21.1 degrees Celsius on Friday and Saturday, driven by a growing natural El Niño and human-caused climate change.
  • Long-Term warming from burning coal, oil, and gas has warmed the waters by 0.8 degrees Celsius , Samantha Burgess, strategic climate lead for Copernicus, explained. The current El Niño is expected to reach its peak between November and January.
  • "The ocean is not supposed to do this," said Boris Worm, a biology professor at Dalhousie University. University of North Carolina marine ecologist John Bruno noted that hot water kills coral, though some species are adapting to the heat.
  • Former National Oceanic and Atmospheric Administration chief Jane Lubchenco warned this warming destabilizes weather patterns and threatens food security. Worm cautioned that fisheries, such as the Peruvian anchovy industry, face collapse as the food web unravels.
  • Describing the ocean as the planet's thermostat, former NOAA chief Rick Spinrad stated, "as long as we depend on a healthy ocean for our safety, prosperity and wellbeing, these record-breaking sea surface temperatures portend even greater challenges for us all.
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186 Articles

Right

El Niño is further amplifying ocean warming, with a new global sea surface temperature record set.

·Budapest, Hungary
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La OpinionLa Opinion
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El ComercioEl Comercio
Lean Left

This situation strengthens the effects of the El Niño phenomenon, whose peak is expected by the end of the year

·Los Angeles, United States
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tz.detz.de
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mannheim24.demannheim24.de
Center

The average global sea surface temperature outside the polar regions was 21.1 degrees on Saturday.

Lean Right

The world's oceans reached the highest average temperature; according to experts it is due to a combination of climate change and the advance of the climate event

·Vicente López, Argentina
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Center

The world's oceans have reached their highest average temperature ever recorded, according to new data released by the European climate change service Copernicus.

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Aftonbladet broke the news in Stockholm, Sweden on Monday, August 24, 2026.
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