World Resorts Switzerland Lake Geneva Weather

Lake Geneva Sea Temperature in December

Average sea water temperature in December:
+48.5°F
Minimum sea water temperature in December: 53.4°F
Maximum sea water temperature in December: 44.2°F

Daily sea water temperature in December, °F

Show year:
2025
2024
2023

The average sea water temperature in December of 2025 was 48.3°F. The highest and lowest sea temperatures during the month were 50.0°F and 45.7°F.

Monthly sea water temperature in Lake Geneva, °F

Which Switzerland resorts have warmest sea in December?

Place name December 2025 December 2024
Geneva 49.4°F 49.5°F
Lake Geneva 48.3°F 49.0°F
Lausanne 48.2°F 48.9°F
Vevey 48.1°F 49.0°F
Gstaad 48.1°F 48.9°F
Verbier 48.1°F 48.9°F
Montreux 48.1°F 48.9°F
St Gallen 45.6°F 46.0°F
Winterthur 45.3°F 45.8°F
Zurich 45.3°F 45.8°F

Best time for vacation in Lake Geneva

Sunniest months:
August 18 days
July 16 days
September 16 days
Warmest months:
August 74.5 °F
July 74.1 °F
June 69.8 °F
Warmest sea temp:
August 70.2 °F
July 69.0 °F
September 66.1 °F
Coldest months:
January 38.6 °F
December 41.2 °F
February 42.1 °F
Rainiest months:
June 7 days
May 7 days
December 6 days
Windiest months:
January 6.4 mph
February 6.0 mph
December 5.8 mph

Lake Geneva on a weather map

Current weather
07:27
Lake Geneva
+48°F
S 8 mph
Feels like: +45°F
Precip.: 31%
Places in Switzerland:
Name
°F
Berne
+46°F
Vevey
+39°F
Verbier
+32°F
Winterthur
+46°F
Gstaad
+41°F
Geneva
+50°F
Lake Geneva
+48°F
Interlaken
+45°F
Lausanne
+48°F
Lugano
+43°F
Montreux
+39°F
St Gallen
+48°F
Zermatt
+27°F
Zurich
+48°F
Spitz
+46°F
all places
24 Hours Forecast
Lake Geneva
Local time: 07:27
October 09, friday
0900
48°F
S
6 mph
1200
54°F
S
4 mph
1500
59°F
SE
4 mph
1800
55°F
SE
2 mph
2100
52°F
SW
1 mph
October 10, saturday
0000
45°F
N
1 mph
0300
46°F
N
3 mph
0600
48°F
N
2 mph
Units of measurement: °C / °F