Measurements:
°C
°F
CURRENT WEATHER
05:14
Chamonix
52°F
NW 5 mph
Feels like: 52°F
Precip: 15%
World Resorts France Chamonix Weather

7 Day Weather Forecast

09.29
tue
DAY
66°F
E 3 mph
precip
9%
NIGHT
52°F
NW 6 mph
precip
21%
09.30
wed
DAY
64°F
E 5 mph
precip
11%
NIGHT
52°F
N 2 mph
precip
22%
10.01
thu
DAY
50°F
N 3 mph
precip
41%
NIGHT
48°F
SW 4 mph
precip
29%
10.02
fri
DAY
60°F
SE 4 mph
precip
20%
NIGHT
52°F
SW 2 mph
precip
41%
10.03
sat
DAY
58°F
NE 2 mph
precip
25%
NIGHT
50°F
N 4 mph
precip
36%
10.04
sun
DAY
46°F
NW 5 mph
precip
46%
NIGHT
44°F
N 4 mph
precip
51%
10.05
mon
DAY
48°F
W 3 mph
precip
18%
NIGHT
42°F
NW 6 mph
precip
20%

Chamonix Sea Water Temperature in September, °F

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Chamonix was 21.8°F. The maximum and minimum values were 19.8°F and 23.8°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 67.9 °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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