At this moment warmest sea in Normandy was observed in the following locations: Etretat, Saint Malo, Brussel.
You can find the full list of Normandy marine locations in the table below. It shows current sea temperature values and averages for current and upcoming months.
| Place name | Current sea temp |
September 2025 | October 2025 |
|---|---|---|---|
| Etretat | 66.7°F | 65.3°F | 61.1°F |
| Saint Malo | 66.6°F | 65.2°F | 60.7°F |
| Brussel | 66.2°F | 65.0°F | 58.4°F |
| Deauville | 66.2°F | 65.0°F | 60.2°F |
| Le Havre | 66.0°F | 65.0°F | 60.2°F |
| Antwerpen | 65.8°F | 64.9°F | 58.2°F |
| Gent | 65.8°F | 64.7°F | 58.3°F |
| Oostende | 65.8°F | 64.0°F | 58.3°F |
| Bournemouth | 65.8°F | 63.9°F | 59.8°F |
| Kortrijk | 65.7°F | 64.0°F | 58.3°F |
| Brighton | 65.5°F | 64.1°F | 60.2°F |
| Brugge | 65.3°F | 63.7°F | 58.0°F |
| London | 65.3°F | 62.9°F | 56.8°F |
| Bristol | 63.7°F | 61.6°F | 55.7°F |
| Bath | 63.3°F | 61.4°F | 55.2°F |
Charts below show average sea water temperature for Normandy resorts with the warmest sea.
You can also check other months of the year to see sea temperature of Normandy resorts at that time.
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