Measurements:
°C
°F
Geneva
84°F
E 1 mph
Feels like: 84°F
Precip: 2%
World Resorts Switzerland Geneva Weather

Geneva Sea Water Temperature

Current Sea Water Temperature:
+70.8°F
Maximum Sea Water Temperature in June: 78.2°F
Minimum Sea Water Temperature in June: 30.0°F
Average water temperature in June: 63.2°F

Sea Water Temperature for the Last 10 Days:

June 17 70.8°F June 12 67.2°F
June 16 69.8°F June 11 67.2°F
June 15 68.6°F June 10 67.2°F
June 14 69.0°F June 09 67.4°F
June 13 68.4°F June 08 67.6°F

When is the Warmest Sea for Geneva?

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

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 Geneva was 74.3°F. The maximum and minimum values were 70.2°F and 77.8°F respectively.

Sea Water Temperature in July

Select Year: 2025 2024 2023

The average sea surface temperature in July 2025 for Geneva was 74.4°F. The maximum and minimum values were 70.4°F and 79.0°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Geneva was 68.7°F. The maximum and minimum values were 65.6°F and 71.6°F respectively.

Best Time to Visit Geneva
The most sunny months:
August 19 days
July 17 days
September 15 days
The most warm months:
August 79.7 °F
July 79.1 °F
June 75.1 °F
Warmest sea temperature:
August 69.6 °F
July 68.9 °F
September 66.0 °F
The most cold months:
January 37.2 °F
December 39.9 °F
February 41.9 °F
The most rainy months:
May 7 days
June 7 days
July 6 days
The most windy months:
January 5 mph
February 4 mph
April 4 mph

Geneva on the Weather Map

Switzerland Resorts:
NAME
Basle +84
Berne +84
Geneva +84
Gstaad +76
Interlaken +70
Lake Geneva +80
Lausanne +76
Lucerne +84
Montreux +76
St Gallen +74
St Moritz +60
Verbier +70
Vevey +76
Winterthur +84
Zurich +84
24 Hours Weather Forecast
Geneva
Local time: 12:56
17 jun, wednesday
1500 88°F
SW
1 mph
1800 86°F
SW
4 mph
2100 70°F
SW
3 mph
18 jun, thursday
0000 66°F
SW
2 mph
0300 62°F
W
2 mph
0600 60°F
SW
2 mph
0900 74°F
S
2 mph
1200 84°F
S
2 mph