In July warmest sea in Switzerland is usually observed in the following locations: Geneva, Zurich, Winterthur.
Table below shows the average sea water temperature for marine resorts of Switzerland in July for the last three years.
| Place name | July 2026 | July 2025 | July 2024 |
|---|---|---|---|
| Geneva | 76.6°F | 72.0°F | 69.5°F |
| Zurich | 76.5°F | 74.0°F | 72.1°F |
| Winterthur | 76.5°F | 73.9°F | 72.1°F |
| Montreux | 76.3°F | 73.0°F | 71.5°F |
| Gstaad | 76.3°F | 73.0°F | 71.5°F |
| Verbier | 76.3°F | 73.0°F | 71.5°F |
| Vevey | 76.0°F | 72.7°F | 71.5°F |
| Lake Geneva | 75.5°F | 71.8°F | 70.8°F |
| Lausanne | 75.0°F | 72.0°F | 70.8°F |
| St Gallen | 74.7°F | 72.9°F | 71.7°F |
Charts below show average sea water temperature for Switzerland resorts with the warmest sea in July.
You can also check other months of the year to see sea temperature of Switzerland resorts at that time.
Places in Switzerland:
Name
°F
