This data visualisation, based on data from the Copernicus EU shows sea surface temperature anomalies on 29 June 2026.
The red and dark red tones show areas where sea surface temperatures above the long-term average were recorded. The largest anomalies reached approximately 6°C in the western Mediterranean Sea, particularly in the Gulf of Lion off the coast of southern France, and in the Ligurian and Tyrrhenian seas along the western coast of Italy. Sea surface temperature anomalies also increased markedly in the southern North Sea and the Baltic Sea compared with late May.
