World Resorts France Chamonix Weather

Chamonix sea water temperature

Current sea water temperature:
+49.8°F
Minimum sea water temperature in April: 58.5°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 49.8°F April 1 46.0°F
April 5 48.4°F March 31 46.6°F
April 4 46.2°F March 30 46.6°F
April 3 46.2°F March 29 47.7°F
April 2 46.0°F March 28 47.8°F

When is the warmest sea in Chamonix?

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

Monthly Sea Temperatures in Chamonix, °F

Sea water temperature in August, °F

Show year:
2025
2024
2023

The average sea water temperature in August of 2025 was 72.9°F. The highest and lowest sea temperatures during the month were 75.4°F and 70.7°F.

Sea water temperature in July, °F

Show year:
2025
2024
2023

The average sea water temperature in July of 2025 was 72.4°F. The highest and lowest sea temperatures during the month were 75.4°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 68.1°F. The highest and lowest sea temperatures during the month were 71.6°F and 64.8°F.

Best time for vacation in Chamonix

Sunniest months:
August 17 days
October 16 days
July 15 days
Warmest months:
July 63.6 °F
August 62.9 °F
June 60.1 °F
Warmest sea temp:
August 69.9 °F
July 68.7 °F
September 65.7 °F
Coldest months:
January 27.0 °F
December 29.7 °F
February 30.1 °F
Rainiest months:
June 11 days
May 10 days
July 9 days
Windiest months:
January 4.9 mph
December 4.8 mph
February 4.7 mph

Chamonix on a weather map

Chamonix
+50°F
SE 4 mph
Feels like: +48°F
Precip.: 63%
Places in France:
Name
°F
+66°F
+61°F
+75°F
+79°F
+61°F
+64°F
+63°F
+57°F
+64°F
+59°F
+63°F
+66°F
+63°F
+73°F
+59°F
24 Hours Forecast
Chamonix
Local time: 16:57
April 06, monday
1800
50°F
SE
4 mph
2100
41°F
N
2 mph
April 07, tuesday
0000
39°F
N
4 mph
0300
37°F
N
4 mph
0600
37°F
NW
4 mph
0900
45°F
NW
2 mph
1200
52°F
SE
2 mph
1500
54°F
SE
4 mph
Units of measurement: °C / °F