Measurements:
°C
°F
CURRENT WEATHER
09:33
Lake Geneva
66°F
NE 14 mph
Feels like: 66°F
Precip: 78%
World Resorts USA Lake Geneva Weather

7 Day Weather Forecast

09.15
tue
DAY
70°F
NE 14 mph
precip
61%
NIGHT
68°F
SW 6 mph
precip
25%
09.16
wed
DAY
68°F
W 11 mph
precip
17%
NIGHT
66°F
W 4 mph
precip
32%
09.17
thu
DAY
76°F
S 3 mph
precip
7%
NIGHT
66°F
SW 9 mph
precip
26%
09.18
fri
DAY
60°F
W 12 mph
precip
47%
NIGHT
68°F
NW 11 mph
precip
74%
09.19
sat
DAY
74°F
NE 13 mph
precip
49%
NIGHT
62°F
SW 9 mph
precip
35%
09.20
sun
DAY
62°F
SW 9 mph
precip
44%
NIGHT
60°F
W 14 mph
precip
75%
09.21
mon
DAY
70°F
N 6 mph
precip
59%
NIGHT
60°F
E 9 mph
precip
34%

Lake Geneva Sea Water Temperature in September, °F

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Lake Geneva was 0.0°F. The maximum and minimum values were 0.0°F and 0.0°F respectively.

Lake Geneva on the Weather Map

Best Time to Visit Lake Geneva
The most sunny months:
September 15 days
June 13 days
August 13 days
The most warm months:
July 83.4 °F
August 81.8 °F
June 78.9 °F
Warmest sea temperature:
August 46.9 °F
October 45.6 °F
July 39.6 °F
The most cold months:
January 23.7 °F
February 28.8 °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
more details