Measurements:
°C
°F
Chamonix
30°F
NW 4 mph
Feels like: 24°F
Precip: 0%
World Resorts France Chamonix Weather

Chamonix Sea Water Temperature

Current Sea Water Temperature:
+44.2°F
Maximum Sea Water Temperature in February: 46.4°F
Minimum Sea Water Temperature in February: 30.0°F
Average water temperature in February: 42.5°F

Sea Water Temperature for the Last 10 Days:

February 13 44.2°F February 08 43.4°F
February 12 44.6°F February 07 43.6°F
February 11 43.6°F February 06 44.2°F
February 10 43.6°F February 05 44.4°F
February 09 43.6°F February 04 44.0°F

When is the Warmest Sea for Chamonix?

According to our data for the last three years for Chamonix 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 Chamonix was 75.5°F. The maximum and minimum values were 73.0°F and 78.2°F respectively.

Sea Water Temperature in July

Select Year: 2025 2024 2023

The average sea surface temperature in July 2025 for Chamonix was 74.9°F. The maximum and minimum values were 71.6°F and 78.2°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Chamonix was 70.1°F. The maximum and minimum values were 66.4°F and 74.0°F respectively.

Best Time to Visit Chamonix
The most sunny months:
August 17 days
October 16 days
July 15 days
The most warm months:
July 65.1 °F
August 64.4 °F
June 61.3 °F
Warmest sea temperature:
August 72.1 °F
July 70.8 °F
September 67.5 °F
The most cold months:
January 24.5 °F
December 27.4 °F
February 27.8 °F
The most rainy months:
June 11 days
May 10 days
July 9 days
The most windy months:
January 4 mph
December 4 mph
February 4 mph

Chamonix on the Weather Map

France Resorts:
NAME
Annecy +42
Antibes +56
Biarritz +50
Bordeaux +48
Cannes +56
Chamonix +30
Corsica +60
Etretat +46
Marseilles +52
Menton +56
Montpellier +50
Nice +54
Paris +48
Saint-Tropez +56
Toulouse +50
24 Hours Weather Forecast
Chamonix
Local time: 11:51
13 feb, friday
1200 30°F
NW
4 mph
1500 28°F
NW
4 mph
1800 22°F
NW
8 mph
2100 20°F
NW
8 mph
14 feb, saturday
0000 20°F
NW
8 mph
0300 20°F
NW
7 mph
0600 20°F
NW
5 mph
0900 22°F
SW
3 mph