Current Sea Water Temperature:
+68.8°F
| Maximum Sea Water Temperature in May: | 68.8°F |
| Minimum Sea Water Temperature in May: | 30.0°F |
| Average water temperature in May: | 55.7°F |
| detailed information | |
Sea Water Temperature for the Last 10 Days:
| May 27 | 68.8°F | May 22 | 61.4°F |
| May 26 | 67.2°F | May 21 | 61.6°F |
| May 25 | 65.4°F | May 20 | 59.6°F |
| May 24 | 64.2°F | May 19 | 59.4°F |
| May 23 | 63.0°F | May 18 | 59.4°F |
When is the Warmest Sea for Lake Geneva?
According to our data for the last three years for Lake Geneva the highest average sea water temperature was in August, July and September.
Average Water Temperature by Month, °F
Sea Water Temperature in August
The average sea surface temperature in August 2025 for Lake Geneva was 75.0°F. The maximum and minimum values were 72.0°F and 78.4°F respectively.
Sea Water Temperature in July
The average sea surface temperature in July 2025 for Lake Geneva was 74.3°F. The maximum and minimum values were 71.6°F and 77.0°F respectively.
Sea Water Temperature in September
The average sea surface temperature in September 2025 for Lake Geneva was 70.0°F. The maximum and minimum values were 66.8°F and 73.6°F respectively.
Switzerland Resorts:
NAME
F°
| Berne |  |
+64 |
| Geneva |  |
+66 |
| Gstaad | |
+52 |
| Interlaken |  |
+56 |
| Lake Geneva | |
+66 |
| Lausanne | |
+70 |
| Lucerne | |
+66 |
| Montreux | |
+62 |
| St Gallen | |
+64 |
| St Moritz | |
+46 |
| Verbier | |
+48 |
| Vevey | |
+62 |
| Winterthur | |
+66 |
| Zermatt | |
+42 |
| Zurich | |
+68 |
Countries:
NAME
POPULARITY
24 Hours Weather Forecast
Lake Geneva
Local time: 20:13
27 may, wednesday
| 2100 |  |
66°F | S 2 mph |
28 may, thursday
| 0000 |  |
62°F | SW 2 mph |
| 0300 | |
58°F | SW 2 mph |
| 0600 | |
56°F | SW 4 mph |
| 0900 | |
70°F | SW 7 mph |
| 1200 | |
78°F | S 9 mph |
| 1500 | |
82°F | S 11 mph |
| 1800 | |
80°F | S 11 mph |