Current sea water temperature:
+58.5°F
| Minimum sea water temperature in May: | 66.9°F |
| Maximum sea water temperature in May: | 32.0°F |
| Average sea water temperature in May: | 55.0°F |
| more information | |
14 days
forecast
forecast
| Lake Geneva |
monthly
weather
weather
| Lake Geneva |
Sea water temperature for the last 10 days:
| May 17 | 58.5°F | May 12 | 59.0°F |
| May 16 | 58.5°F | May 11 | 59.2°F |
| May 15 | 58.5°F | May 10 | 59.4°F |
| May 14 | 58.5°F | May 9 | 57.4°F |
| May 13 | 58.6°F | May 8 | 56.8°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:
2025
2024
2023
The average sea water temperature in August of 2025 was 72.5°F. The highest and lowest sea temperatures during the month were 75.6°F and 69.8°F.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 71.8°F. The highest and lowest sea temperatures during the month were 74.3°F and 69.4°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
May
May
| 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: 12:55
May 17, sunday
1500
57°F
E
1 mph
1 mph
1800
59°F
E
2 mph
2 mph
2100
46°F
NW
2 mph
2 mph
May 18, monday
0000
43°F
N
2 mph
2 mph
0300
41°F
N
2 mph
2 mph
0600
43°F
N
2 mph
2 mph
0900
48°F
NE
4 mph
4 mph
1200
54°F
E
2 mph
2 mph
