Current sea water temperature:
+73.8°F
| Minimum sea water temperature in August: | 78.4°F |
| Maximum sea water temperature in August: | 32.0°F |
| Average sea water temperature in August: | 70.1°F |
| more information | |
14 days
forecast
forecast
| Lake Geneva |
monthly
weather
weather
| Lake Geneva |
Sea water temperature for the last 10 days:
| August 28 | 73.8°F | August 23 | 74.3°F |
| August 27 | 75.0°F | August 22 | 75.7°F |
| August 26 | 73.2°F | August 21 | 76.5°F |
| August 25 | 74.7°F | August 20 | 76.8°F |
| August 24 | 75.0°F | August 19 | 76.1°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 75.9°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:
2025
2024
2023
The average sea water temperature in September of 2025 was 68.0°F. The highest and lowest sea temperatures during the month were 71.2°F and 65.1°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: 10:10
August 28, friday
1200
63°F
E
6 mph
6 mph
1500
55°F
NE
4 mph
4 mph
1800
57°F
N
4 mph
4 mph
2100
59°F
NW
4 mph
4 mph
August 29, saturday
0000
55°F
NW
4 mph
4 mph
0300
54°F
NW
4 mph
4 mph
0600
54°F
NW
4 mph
4 mph
0900
55°F
N
2 mph
2 mph
