A record-high Marine Heatwave hits the Mediterranean sea

A record-high Marine Heatwave hits the Mediterranean sea - Portugal Business News

News Environment Europe - A record-high Marine Heatwave hits the Mediterranean sea with Sea Surface Temperatures increasing by +0.5°C on June 30, 2026, that is the highest value ever recorded for this date, according to the EU Copernicus Marine Service data:

Sea Surface Temperatures (SST) across the globe have reached record-high levels for this time of year, with anomalies showing that Sea Surface Temperatures were higher than the climatological average.

Which oceans have the highest anomalies in Sea Surface Temperatures in 2026?

The oceans that have the highest anomalies in Sea Surface Temperatures in the summer of 2026 are:

1 - The Mediterranean Sea

Sea Surface Temperatures in the Mediterranean Sea registered +0.5°C on June 30, 2026, that is the highest temperature ever recorded for this date, and the marine heatwave is still ongoing.

2 - Along the equatorial Pacific Ocean

Sea Surface Temperatures along the equatorial Pacific Ocean are also above-average due to El Niño conditions. During El Niño, trade winds weaken and warm water is pushed back east, toward the west coast of the Americas.