Image of the week : a marine heatwave is ongoing in the Mediterranean Sea

 This data visualisation, based on Copernicus Marine Service (CMEMS) data, shows sea surface temperature anomalies recorded on 22 June 2025.

Areas in dark red indicate temperatures more than 5°C above the seasonal average.

The most intense warming was observed in the western Mediterranean basin, including the Balearic Sea and the Tyrrhenian Sea.

CMEMS delivers free, open-access marine data to support the monitoring of ocean health.

Tracking SST anomalies is essential to better understanding climate change impacts, anticipating extreme weather events, and managing risks to marine biodiversity and coastal communities.

 

Copernicus data show an important SST increase throughout the last week in parts of the western Mediterranean
 

The ongoing marine heatwave in the Mediterranean Sea 

is one of the largest marine anomalies observed globally