Measurements:
°C
°F
CURRENT WEATHER
03:06
Chamonix
54°F
N 6 mph
Feels like: 52°F
Precip: 80%
World Resorts France Chamonix Weather

7 Day Weather Forecast

09.09
wed
DAY
48°F
SE 7 mph
precip
82%
NIGHT
44°F
SW 6 mph
precip
32%
09.10
thu
DAY
56°F
SE 6 mph
precip
32%
NIGHT
48°F
NW 2 mph
precip
15%
09.11
fri
DAY
56°F
SE 6 mph
precip
3%
NIGHT
46°F
W 4 mph
precip
27%
09.12
sat
DAY
56°F
S 6 mph
precip
31%
NIGHT
46°F
NW 3 mph
precip
9%
09.13
sun
DAY
60°F
SE 4 mph
precip
1%
NIGHT
50°F
W 2 mph
precip
7%
09.14
mon
DAY
60°F
NW 6 mph
precip
4%
NIGHT
48°F
W 4 mph
precip
9%
09.15
tue
DAY
64°F
SE 4 mph
precip
3%
NIGHT
50°F
NW 3 mph
precip
9%

Chamonix Sea Water Temperature in September, °F

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Chamonix was 20.0°F. The maximum and minimum values were 18.2°F and 22.0°F respectively.

Chamonix on the Weather Map

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 67.5 °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
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