Measurements:
°C
°F
Lake Geneva
26°F
SE 11 mph
Feels like: 16°F
Precip: 0%
World Resorts USA Lake Geneva Weather

Lake Geneva Sea Water Temperature

Current Sea Water Temperature:
+30.0°F
Maximum Sea Water Temperature in February: 35.0°F
Minimum Sea Water Temperature in February: 30.0°F
Average water temperature in February: 31.3°F

Sea Water Temperature for the Last 10 Days:

February 21 30.0°F February 16 30.0°F
February 20 30.0°F February 15 30.0°F
February 19 30.0°F February 14 30.0°F
February 18 30.0°F February 13 30.0°F
February 17 30.0°F February 12 30.0°F

When is the Warmest Sea for Lake Geneva?

According to our data for the last three years for Lake Geneva the highest average sea water temperature was in August, September and July.

Average Water Temperature by Month, °F

Sea Water Temperature in August

Select Year: 2025 2024 2023

The average sea surface temperature in August 2025 for Lake Geneva was 30.0°F. The maximum and minimum values were 30.0°F and 30.0°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Lake Geneva was 30.0°F. The maximum and minimum values were 30.0°F and 30.0°F respectively.

Sea Water Temperature in July

Select Year: 2025 2024 2023

The average sea surface temperature in July 2025 for Lake Geneva was 30.0°F. The maximum and minimum values were 30.0°F and 30.0°F respectively.

Best Time to Visit Lake Geneva
The most sunny months:
September 15 days
October 13 days
August 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 27.6 °F
December 31.7 °F
The most rainy months:
May 3 days
April 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
Chicago +28
Hawaii +72
Honolulu +72
Houston +74
Las Vegas +34
Los Angeles +40
Maui +66
Miami +74
Miami Beach +78
New York +38
San Diego +44
San Francisco +42
Sarasota +68
Tampa +70
Washington +38
24 Hours Weather Forecast
Lake Geneva
Local time: 07:20
21 feb, saturday
0900 26°F
SE
12 mph
1200 30°F
SE
12 mph
1500 30°F
SE
12 mph
1800 28°F
SE
12 mph
2100 26°F
SE
13 mph
22 feb, sunday
0000 24°F
SE
14 mph
0300 22°F
SE
15 mph
0600 22°F
SE
15 mph