Measurements:
°C
°F
Lake Geneva
38°F
S 4 mph
Feels like: 34°F
Precip: 100%
World Resorts Switzerland Lake Geneva Weather August Weather in Lake Geneva

Lake Geneva Weather: August

Average Day Temperature: 77.1°F
Average Night Temperature: 57.6°F
Sea Water Temperature: 72.0°F
Number of Sunny Days: 19 days
Sunshine Hours: 13.4 - 14.8 hours
Number of Rainy Days: 5 days
Precipitation Totals: 3.0 in

Air Temperature in August, °F

Select Year: 2025 2024 2023

The highest day temperature in August 2025 was 92°F. The lowest night temperature was 52°F. The average values for day and night temperatures during August were 77.3°F и 61.1°F respectivly.

Lake Geneva Water Sea Temperature in August, °F

Select Year: 2025 2024 2023

The average sea surface temperature in August 2025 for Lake Geneva was 75.0°F. The maximum and minimum values were 72.0°F and 78.4°F respectively.

Sunny, Cloudy and Gloomy days

Most of the days in August are sunny but you can also expect cloudy and gloomy days.

Precipitation Totals in August, in

Precipitation total in August for Lake Geneva is 3.0 in.

Wind Speed in August, mph

The average wind speed in August is 4.1 mph. This value is relatively stable throughout the year.

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 August is 10.2 hours.

Best Time to Visit Lake Geneva
The most sunny months:
August 19 days
July 16 days
September 16 days
The most warm months:
August 77.1 °F
July 76.3 °F
June 71.6 °F
Warmest sea temperature:
August 72.0 °F
July 70.7 °F
September 67.6 °F
The most cold months:
January 37.3 °F
December 40.0 °F
February 40.8 °F
The most rainy months:
June 7 days
May 7 days
July 6 days
The most windy months:
January 6 mph
February 6 mph
December 6 mph

Lake Geneva on the Weather Map

Switzerland Resorts:
NAME
Basle +38
Berne +34
Geneva +36
Gstaad +30
Lake Geneva +38
Lausanne +38
Lucerne +28
Lugano +42
Montreux +28
St Gallen +34
Verbier +18
Vevey +28
Winterthur +34
Zermatt +12
Zurich +34
24 Hours Weather Forecast
Lake Geneva
Local time: 09:03
05 dec, friday
1200 40°F
SW
3 mph
1500 42°F
W
2 mph
1800 40°F
W
2 mph
2100 38°F
NE
3 mph
06 dec, saturday
0000 36°F
NE
6 mph
0300 38°F
NE
7 mph
0600 40°F
NE
9 mph
0900 42°F
NE
8 mph