Measurements:
°C
°F
Lake Geneva
88°F
NE 14 mph
Feels like: 88°F
Precip: 0%
World Resorts USA Lake Geneva Weather May Weather in Lake Geneva

Lake Geneva Weather: May

Average Day Temperature: 66.4°F
Average Night Temperature: 50.7°F
Sea Water Temperature: 33.8°F
Number of Sunny Days: 11 days
Sunshine Hours: 14.1 - 15.1 hours
Number of Rainy Days: 3 days
Precipitation Totals: 1.4 in

Air Temperature in May, °F

Select Year: 2026 2025 2024

The highest day temperature in May 2026 was 92°F. The lowest night temperature was 30°F. The average values for day and night temperatures during May were 70.6°F и 49.3°F respectivly.

Lake Geneva Water Sea Temperature in May, °F

Select Year: 2026 2025 2024

The average sea surface temperature in May 2026 for Lake Geneva was 30.0°F. The maximum and minimum values were 30.0°F and 30.0°F respectively.

Sunny, Cloudy and Gloomy days

You can expect various weather conditions during May. Be ready for sunny, cloudy or even gloomy days.

Precipitation Totals in May, in

Precipitation total in May for Lake Geneva is 1.4 in. It makes may one of the most rainy months of the year.

Wind Speed in May, mph

The average wind speed in May is 9.3 mph.

Average Sunny Hours Per Day

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Lake Geneva in May is 8.0 hours.

Best Time to Visit Lake Geneva
The most sunny months:
September 15 days
August 13 days
October 13 days
The most warm months:
July 82.2 °F
August 81.7 °F
June 78.7 °F
Warmest sea temperature:
August 51.2 °F
October 45.6 °F
July 42.8 °F
The most cold months:
January 23.7 °F
February 28.8 °F
December 31.7 °F
The most rainy months:
April 3 days
May 3 days
June 2 days
The most windy months:
March 11 mph
April 11 mph
November 11 mph

Lake Geneva on the Weather Map

USA Resorts:
NAME
Boston +90
Chicago +76
Hawaii +78
Honolulu +78
Houston +86
Las Vegas +92
Los Angeles +70
Maui +70
Miami +82
Miami Beach +84
New York +94
San Diego +64
San Francisco +60
Sarasota +94
Tampa +92
24 Hours Weather Forecast
Lake Geneva
Local time: 11:57
04 jun, thursday
1200 88°F
NE
14 mph
1500 94°F
NE
14 mph
1800 88°F
NE
12 mph
2100 76°F
N
9 mph
05 jun, friday
0000 68°F
N
11 mph
0300 68°F
NE
11 mph
0600 66°F
N
9 mph
0900 68°F
N
12 mph