Sea Surface Temperature Anomaly of the Global Ocean at end of June 2026
Sea surface temperatures (SST) across the global ocean are currently well above the long-term average. According to recent analysis from both the Copernicus Climate Change and the Copernicus Marine Services, sea surface temperature anomalies have reached record-high levels for this time of year.
This data visualisation, based on Copernicus Marine Service data, shows SST anomalies across the global ocean on 30 June 2026. Most ocean regions show positive anomalies, indicating that sea surface temperatures were higher than the climatological average. The most pronounced warm anomalies are visible across the Mediterranean Sea, where a marine heatwave is ongoing, and along the equatorial Pacific Ocean, where El Niño conditions contributed to above-average sea surface temperatures. The inset shows the historical evolution of the SST anomaly since 1993. On 30 June 2026, the global SST anomaly reached +0.5°C, the highest value ever recorded for this date.
Copernicus Marine Service data support the monitoring of sea surface temperature anomalies in near real time and contribute to preparedness for extreme weather events associated with unusually warm ocean conditions.
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