Climate change is cooking Europe’s oceans, scientists find

By Zia Weise | 08/20/2026 06:25 AM EDT

Global warming is the main driver of this year’s marine heat waves, with knock-on effects for ecosystems and extreme weather.

A firefighting helicopter flies near the Greek island of Skyros.

A firefighting helicopter flies near the Greek island of Skyros on Aug. 16. Aris Messinis/AFP via Getty Images

BRUSSELS — Europe’s seas are overheating and climate change is to blame, researchers said Wednesday, warning that marine heat waves are threatening ecosystems and coastal communities.

The Atlantic and the Mediterranean are far hotter than normal, with some parts of the oceans around Europe reaching 6 degrees Celsius above average this week.

The culprit is climate change, scientists from the World Weather Attribution consortium said in a study released Wednesday. They found global warming is the driver behind this year’s high ocean temperatures.

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The report lands during a summer marked by record-breaking heat waves on land, droughts and fires — all worsened by climate change, according to the same scientists. In the sea, the soaring temperatures harm marine species, boost jellyfish populations and increase the risk of destructive storms later in the year.