The Mediterranean Sea hit a new June temperature record on Sunday, June 29, 2025, with an average sea surface temperature of 26.01°C. This data comes from the European Union's Copernicus Climate Change Service.
This temperature is approximately 3°C above the 1991-2020 average for the same period, with localized spikes exceeding 4°C along the French and Spanish coasts. Researchers indicate that the situation is unlikely to improve soon, given current weather patterns.
The Mediterranean region is currently experiencing a significant heatwave. Spain and Portugal set new temperature highs on Monday, and France, Italy, and Britain are also facing elevated temperatures. The rapid warming of the Mediterranean highlights the urgent need for global climate action.
Since 2023, the region has seen consistent waves of abnormally high temperatures, with marine heatwaves becoming more frequent and intense. These conditions harm marine life, reduce fish stocks, and contribute to stronger storms. A 2022 study revealed widespread death in numerous underwater species due to marine heatwaves between 2015 and 2019.