Measurements:
°C
°F
Geneva
42°F
S 0 mph
Feels like: 42°F
Precip: 0%
World Resorts Switzerland Geneva Weather

Geneva Sea Water Temperature

Current Sea Water Temperature:
+54.4°F
Maximum Sea Water Temperature in April: 58.2°F
Minimum Sea Water Temperature in April: 30.0°F
Average water temperature in April: 50.6°F

Sea Water Temperature for the Last 10 Days:

April 15 54.4°F April 10 52.8°F
April 14 54.6°F April 09 52.8°F
April 13 54.6°F April 08 50.8°F
April 12 54.8°F April 07 49.2°F
April 11 55.6°F April 06 48.6°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 8 days
June 7 days
July 6 days
The most windy months:
January 5 mph
April 4 mph
February 4 mph

Geneva on the Weather Map

Switzerland Resorts:
NAME
Basle +44
Berne +40
Geneva +42
Gstaad +38
Interlaken +38
Lake Geneva +46
Lausanne +48
Montreux +42
St Gallen +48
St Moritz +26
Verbier +42
Vevey +42
Winterthur +44
Zermatt +26
Zurich +42
24 Hours Weather Forecast
Geneva
Local time: 23:40
16 apr, thursday
0000 42°F
S
0 mph
0300 40°F
SW
0 mph
0600 38°F
SW
1 mph
0900 52°F
SW
4 mph
1200 60°F
SW
5 mph
1500 64°F
SW
6 mph
1800 64°F
SW
6 mph
2100 48°F
SW
2 mph