Mediterranean Sea surface temperature hits record 28.54C, Spains AEMET reports

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Mediterranean Sea surface temperature hits record 28.54C, Spains AEMET reports
Spain matches September heat record at 45.7C in Andalusia as extreme heat grips country
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The Mediterranean Sea’s surface waters reached a record average temperature of 28.54°C on 13 August, Spain’s State Meteorological Agency, AEMET, reported on Sunday. The agency stated on social media that the reading marked the highest temperature recorded across the entire Mediterranean since at least 1940, with daily records broken almost continuously throughout August .
AEMET had previously warned in July that temperatures by late June were already 2.6°C above normal, exceeding levels typically seen in mid-August, which it described as exceptional. The agency noted that the sea had entered a thermal regime not observed before, with values more characteristic of late summer appearing at the start of the season .
The record follows confirmation by Mercator Ocean International, which implements the Copernicus marine service, that July was the hottest month ever measured in the Mediterranean. The average surface temperature that month reached 27.07°C, surpassing the previous record of 26.68°C set in July 2025. Mercator Ocean’s data series begins in 1993, aligning with AEMET’s findings despite differing methodologies .
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