Weather in Lake Geneva: May
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Average day temperature: | 64.1°F |
| Average night temperature: | 50.8°F | |
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Sea water temperature: | 36.7°F |
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Number of sunny days: | 8 days |
| Day length: | 14.1 - 15.1 hours | |
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Number of rainy days: | 3 days |
| Precipitation totals: | 1.6 in. | |
| more information | ||
14 days
forecast
forecast
| Lake Geneva |
sea water
temperature
temperature
| Lake Geneva |
Air temperature in May, °F
Show year:
2025
2024
2023
The highest day temperature during May of 2025 was 85°F. At the same time the lowest night temperature was 33°F. Daily and nightly averages during May were 63.2°F and 46.6°F.
Sea water temperature in Lake Geneva in May, °F
Show year:
2025
2024
The average sea water temperature in May of 2025 was 32.0°F. The highest and lowest sea temperatures during the month were 32.0°F and 32.0°F.
Sunny, partly cloudy and cloudy days
Number of sunny, partly cloudy and cloudy days in May is almost equal.
Precipitation total in May, in.
Precipitation total value in Lake Geneva in May is 1.6 in. Other months of the year show relatively similar values.
Wind speed in May, mph
The average wind speed value in May is 9.2 mph
Average sunny hours
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in May is: 7.4.
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: 20:21
January 10, saturday
2100
27°F
SE
17 mph
17 mph
January 11, sunday
0000
21°F
E
16 mph
16 mph
0300
19°F
E
16 mph
16 mph
0600
21°F
SE
19 mph
19 mph
0900
23°F
SE
17 mph
17 mph
1200
32°F
SE
14 mph
14 mph
1500
36°F
SE
11 mph
11 mph
1800
30°F
NE
8 mph
8 mph
