Measurements:
°C
°F
CURRENT WEATHER
01:54
Lake Geneva
64°F
NW 3 mph
Feels like: 64°F
Precip: 16%
World Resorts Switzerland Lake Geneva Weather

7 Day Weather Forecast

09.29
tue
DAY
68°F
E 3 mph
precip
11%
NIGHT
66°F
NW 4 mph
precip
17%
09.30
wed
DAY
70°F
E 4 mph
precip
6%
NIGHT
64°F
N 4 mph
precip
16%
10.01
thu
DAY
54°F
N 2 mph
precip
39%
NIGHT
54°F
SW 4 mph
precip
46%
10.02
fri
DAY
58°F
SE 3 mph
precip
21%
NIGHT
56°F
SW 2 mph
precip
39%
10.03
sat
DAY
58°F
SE 2 mph
precip
58%
NIGHT
54°F
NE 3 mph
precip
66%
10.04
sun
DAY
52°F
N 2 mph
precip
52%
NIGHT
48°F
NE 2 mph
precip
75%
10.05
mon
DAY
54°F
S 4 mph
precip
29%
NIGHT
54°F
W 4 mph
precip
27%

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 21.7°F. The maximum and minimum values were 19.8°F and 24.4°F respectively.

Lake Geneva on the Weather Map

Best Time to Visit Lake Geneva
The most sunny months:
August 18 days
July 16 days
September 16 days
The most warm months:
August 77.2 °F
July 76.8 °F
June 72.0 °F
Warmest sea temperature:
August 72.5 °F
July 71.1 °F
September 68.0 °F
The most cold months:
January 37.4 °F
December 40.2 °F
February 41.2 °F
The most rainy months:
June 7 days
May 7 days
December 6 days
The most windy months:
January 6 mph
February 6 mph
December 6 mph
more details