Measurements:
°C
°F
Geneva
40°F
S 13 mph
Feels like: 32°F
Precip: 100%
World Resorts Switzerland Geneva Weather

Geneva Sea Water Temperature

Current Sea Water Temperature:
+47.4°F
Maximum Sea Water Temperature in March: 51.2°F
Minimum Sea Water Temperature in March: 30.0°F
Average water temperature in March: 46.4°F

Sea Water Temperature for the Last 10 Days:

March 26 47.4°F March 21 46.0°F
March 25 47.0°F March 20 45.8°F
March 24 46.2°F March 19 46.4°F
March 23 46.2°F March 18 46.4°F
March 22 46.4°F March 17 47.4°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 +42
Berne +36
Geneva +40
Gstaad +24
Lake Geneva +40
Lausanne +38
Lucerne +36
Lugano +48
Montreux +26
St Gallen +34
St Moritz +14
Verbier +20
Vevey +26
Winterthur +40
Zurich +40
24 Hours Weather Forecast
Geneva
Local time: 15:59
26 mar, thursday
1800 36°F
S
9 mph
2100 26°F
S
4 mph
27 mar, friday
0000 24°F
S
5 mph
0300 24°F
S
6 mph
0600 28°F
S
11 mph
0900 34°F
SW
16 mph
1200 40°F
SW
17 mph
1500 42°F
SW
17 mph