The Mediterranean Sea recorded its highest surface temperature ever measured for the month of June, reaching an average of 26.01 degrees Celsius on Sunday, June 29, 2025, according to data from the European Copernicus program analyzed by Météo-France. This temperature was further surpassed on Monday, July 1, 2025, when the sea surface temperature along the Mediterranean coasts reached 26.04 degrees Celsius, marking a new record. Additionally, the eastern Cantabrian Sea also experienced unusually high temperatures, approaching 24 degrees Celsius, which is 4.5 to 5 degrees Celsius above normal for this time of year. These elevated sea temperatures coincide with extreme heat conditions in the region, including temperatures nearing 50 degrees Celsius at altitudes above 1,000 meters. Experts warn that such unprecedented warming of the Mediterranean and Cantabrian seas could have serious environmental and ecological consequences.