World Resorts Switzerland Lake Geneva Weather

Lake Geneva sea water temperature

Current sea water temperature:
+51.1°F
Minimum sea water temperature in April: 59.9°F
Maximum sea water temperature in April: 32.0°F
Average sea water temperature in April: 49.0°F

Sea water temperature for the last 10 days:

April 6 51.1°F April 1 46.4°F
April 5 48.7°F March 31 46.6°F
April 4 46.2°F March 30 46.8°F
April 3 46.2°F March 29 47.3°F
April 2 46.4°F March 28 47.1°F

When is the warmest sea in Lake Geneva?

Based on the data about daily sea water temperature for the last three years the warmest sea in Lake Geneva was noticed in August, July and September.

Monthly Sea Temperatures in Lake Geneva, °F

Sea water temperature in August, °F

Show year:
2025
2024
2023

The average sea water temperature in August of 2025 was 72.5°F. The highest and lowest sea temperatures during the month were 75.6°F and 69.8°F.

Sea water temperature in July, °F

Show year:
2025
2024
2023

The average sea water temperature in July of 2025 was 71.8°F. The highest and lowest sea temperatures during the month were 74.3°F and 69.4°F.

Sea water temperature in September, °F

Show year:
2025
2024
2023

The average sea water temperature in September of 2025 was 68.0°F. The highest and lowest sea temperatures during the month were 71.2°F and 65.1°F.

Best time for vacation in Lake Geneva

Sunniest months:
August 19 days
July 16 days
September 16 days
Warmest months:
August 74.4 °F
July 73.7 °F
June 69.5 °F
Warmest sea temp:
August 69.8 °F
July 68.6 °F
September 65.8 °F
Coldest months:
January 38.6 °F
December 41.2 °F
February 42.1 °F
Rainiest months:
June 7 days
May 7 days
July 6 days
Windiest months:
January 6.4 mph
February 6.0 mph
December 5.8 mph

Lake Geneva on a weather map

Lake Geneva
+46°F
W 2 mph
Feels like: +46°F
Precip.: 0%
Places in Switzerland:
Name
°F
+43°F
+43°F
+41°F
+30°F
+41°F
+34°F
+45°F
+46°F
+37°F
+50°F
+41°F
+43°F
+27°F
+30°F
+43°F
24 Hours Forecast
Lake Geneva
Local time: 05:47
April 07, tuesday
0600
46°F
W
2 mph
0900
55°F
SW
1 mph
1200
64°F
SE
1 mph
1500
66°F
S
1 mph
1800
66°F
S
1 mph
2100
54°F
W
2 mph
April 08, wednesday
0000
50°F
SW
2 mph
0300
48°F
SW
4 mph
Units of measurement: °C / °F