Measurements:
°C
°F
Chamonix
64°F
NW 2 mph
Feels like: 64°F
Precip: 3%
World Resorts France Chamonix Weather

Chamonix Sea Water Temperature

Current Sea Water Temperature:
+64.0°F
Maximum Sea Water Temperature in October: 69.8°F
Minimum Sea Water Temperature in October: 30.0°F
Average water temperature in October: 60.0°F

Sea Water Temperature for the Last 10 Days:

October 19 64.0°F October 14 66.6°F
October 18 64.4°F October 13 66.6°F
October 17 65.2°F October 12 67.2°F
October 16 64.0°F October 11 68.2°F
October 15 66.6°F October 10 66.8°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: 2026 2025 2024

The average sea surface temperature in August 2026 for Chamonix was 79.2°F. The maximum and minimum values were 76.2°F and 82.4°F respectively.

Sea Water Temperature in July

Select Year: 2026 2025 2024

The average sea surface temperature in July 2026 for Chamonix was 79.0°F. The maximum and minimum values were 76.6°F and 83.2°F respectively.

Sea Water Temperature in September

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Chamonix was 73.3°F. The maximum and minimum values were 69.2°F and 77.6°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 65.3 °F
August 64.6 °F
June 61.4 °F
Warmest sea temperature:
August 72.6 °F
July 71.3 °F
September 67.8 °F
The most cold months:
January 24.5 °F
December 27.4 °F
February 27.9 °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
F°
Antibes +72
Bordeaux +62
Cannes +72
Corsica +74
Deauville +56
Etretat +56
Marseilles +70
Menton +74
Montpellier +70
Nice +70
Paris +56
Perpignan +56
Saint-Tropez +72
Toulon +72
Toulouse +52
24 Hours Weather Forecast
Chamonix
Local time: 15:28
19 oct, monday
1800 52°F
W
2 mph
2100 38°F
NW
7 mph
20 oct, tuesday
0000 38°F
NW
8 mph
0300 40°F
NW
8 mph
0600 38°F
NW
8 mph
0900 44°F
NW
8 mph
1200 54°F
NW
6 mph
1500 58°F
NW
6 mph