Current sea water temperature:
+32.0°F
| Minimum sea water temperature in September: | 70.7°F |
| Maximum sea water temperature in September: | 32.0°F |
| Average sea water temperature in September: | 47.8°F |
| more information | |
14 days
forecast
forecast
| Lake Geneva |
monthly
weather
weather
| Lake Geneva |
Sea water temperature for the last 10 days:
| September 19 | 32.0°F | September 14 | 32.0°F |
| September 18 | 32.0°F | September 13 | 32.0°F |
| September 17 | 32.0°F | September 12 | 32.0°F |
| September 16 | 32.0°F | September 11 | 32.0°F |
| September 15 | 32.0°F | September 10 | 32.0°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, September and October.
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 32.0°F. The highest and lowest sea temperatures during the month were 32.0°F and 32.0°F.
Sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 32.0°F. The highest and lowest sea temperatures during the month were 32.0°F and 32.0°F.
Sea water temperature in October, °F
Show year:
2025
2024
2022
The average sea water temperature in October of 2025 was 32.0°F. The highest and lowest sea temperatures during the month were 32.0°F and 32.0°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 USA:
Name
°F
24 Hours Forecast
Lake Geneva
Local time: 04:24
September 19, saturday
0600
57°F
NW
12 mph
12 mph
0900
57°F
NW
11 mph
11 mph
1200
59°F
NW
11 mph
11 mph
1500
63°F
NW
8 mph
8 mph
1800
63°F
NW
7 mph
7 mph
2100
64°F
W
4 mph
4 mph
September 20, sunday
0000
63°F
W
5 mph
5 mph
0300
63°F
W
8 mph
8 mph
