Beirut, Lebanon (Enmaeya News) — The Mediterranean Sea experienced a record-breaking marine heatwave in June, with surface temperatures reaching 26 degrees Celsius on June 29, about 3 degrees above seasonal averages, according to Copernicus and Météo-France.

Temperatures in parts of the western basin near Spain and Italy were up to 5 degrees higher than usual. The extreme warming occurred earlier than normal, with temperatures typically peaking in August, marking the hottest June on record for the region.

Scientists warn that such high temperatures threaten marine ecosystems, with species unable to adapt facing widespread die-offs or disrupted reproduction. The Mediterranean is considered a climate “hotspot” that could face permanent changes due to prolonged heat.

The warming ocean is also affecting coastal areas by raising air temperatures, increasing humidity, intensifying storms, and heightening drought and fire risks on land. Surface water temperatures near Corsica and Villefranche reached 30 to 31 degrees Celsius in early July.

Experts say the marine heatwave is a warning sign for climate resilience. They urge governments to reduce greenhouse gas emissions, improve marine conservation, and develop strategies to protect marine life and coastal communities.