North Atlantic – The marine heatwave impacting the North Sea, the Norwegian Sea, and the Baltic Sea is decreasing in extent.
Mediterranean Sea – Marine heatwave in the western basin is increasing in intensity.
North Pacific – The marine heatwave in the North Pacific between 120°W and 120°E remains stable in both extent and intensity. The marine heatwave in the Sea of Okhotsk is increasing in extent, with the local emergence of severe and extreme categories.
Indian Ocean – The marine heatwave in the Bay of Bengal is increasing in extent, with the emergence of strong and locally severe categories.

The marine heatwave present in the western basin is increasing in intensity, with moderate and locally strong categories.
The marine heatwave present in the North Sea, the Norwegian Sea, and the Baltic Sea is decreasing in extent, with moderate categories being predominant.

The intensity of the marine heatwave around Cuba is increasing, with strong and severe categories. The marine heatwave in the Gulf of Mexico is decreasing in intensity and has shifted to moderate categories
The marine heatwave in the North Pacific between 120°W and 120°E remains stable in both extent and intensity, with moderate to strong and locally severe categories. The marine heatwave in the Sea of Okhotsk is increasing in extent, with the local emergence of severe and extreme categories.
The marine heatwave in the Bay of Bengal is increasing in extent, with the emergence of strong and locally severe categories.


| North Atlantic | -3°C à 3°C |
| Mediterranean Sea | 0°C à 2°C |
| Tropical Atlantic | -1°C à 1.5°C |
| North Pacific | 0°C à >3°C |
| Tropical Pacific | < -3°C à 2°C |
Help us improve our content! Answer a quick survey about this bulletin here.
Datasets and products: Global Ocean Physics Analysis and Forecast (sea surface temperature) E.U. Copernicus Marine Service/ Mercator Ocean International. https://doi.org/10.48670/moi-00016