Current sea water temperature:
+70.3°F
| Minimum sea water temperature in September: | 75.9°F |
| Maximum sea water temperature in September: | 32.0°F |
| Average sea water temperature in September: | 66.1°F |
| more information | |
14 days
forecast
forecast
| Lake Geneva |
monthly
weather
weather
| Lake Geneva |
Sea water temperature for the last 10 days:
| September 17 | 70.3°F | September 12 | 70.9°F |
| September 16 | 72.1°F | September 11 | 71.8°F |
| September 15 | 69.6°F | September 10 | 73.8°F |
| September 14 | 71.1°F | September 9 | 75.9°F |
| September 13 | 70.9°F | September 8 | 74.1°F |
Monthly sea water temperature, °F
When is the warmest sea in Lake Geneva?
Based on the data about daily sea water temperature for the last three years the warmest sea in Lake Geneva was noticed in August, July and September.
Monthly Sea Temperatures in Lake Geneva, °F
Sea water temperature in August, °F
Show year:
2026
2025
2024
The average sea water temperature in August of 2026 was 75.7°F. The highest and lowest sea temperatures during the month were 77.7°F and 73.2°F.
Sea water temperature in July, °F
Show year:
2026
2025
2024
The average sea water temperature in July of 2026 was 74.7°F. The highest and lowest sea temperatures during the month were 77.2°F and 72.3°F.
Sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 72.5°F. The highest and lowest sea temperatures during the month were 75.9°F and 69.6°F.
current
weather
weather
| Lake Geneva |
weather in
September
September
| Lake Geneva |
Best time for vacation in Lake Geneva
Lake Geneva on a weather map
Places in Switzerland:
Name
°F
24 Hours Forecast
Lake Geneva
Local time: 15:59
September 17, thursday
1800
59°F
S
4 mph
4 mph
2100
57°F
NW
3 mph
3 mph
September 18, friday
0000
54°F
NW
3 mph
3 mph
0300
54°F
NW
3 mph
3 mph
0600
52°F
NW
3 mph
3 mph
0900
50°F
SW
2 mph
2 mph
1200
59°F
S
5 mph
5 mph
1500
63°F
S
5 mph
5 mph
