World Resorts France Chamonix Weather

Chamonix weather in September

Weather in Chamonix: September

Average day temperature: 55.9°F
Average night temperature: 39.7°F
Sea water temperature: 65.4°F
Number of sunny days: 14 days
Day length: 11.8 - 13.3 hours
Number of rainy days: 6 days
Precipitation totals: 3.0 in.

Air temperature in September, °F

Show year:
2023
2022
2021

The highest day temperature during September of 2023 was 70°F. At the same time the lowest night temperature was 30°F. Day and night temperature averages during September were 60.9°F and 46.3°F.

Sea water temperature in Chamonix in September, °F

Show year:
2023
2022
2021

The average sea water temperature in September of 2023 was 70.6°F. The highest and lowest sea temperatures during the month were 75.0°F and 66.6°F.

Sunny, partly cloudy and cloudy days

Mostly all days in September are sunny but cloudy days are also possible.

Precipitation total in September, in.

Precipitation total value in Chamonix in September is 3.0 in. Other months of the year show relatively similar values.

Wind speed in September, mph

The average wind speed value in September is 3.8 mph It makes September lest windy month of the year.

Average sunny hours

This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in September is: 8.2.

Best time for vacation in Chamonix

Sunniest months:
August 18 days
July 16 days
October 16 days
Warmest months:
July 63.9 °F
August 62.7 °F
June 60.0 °F
Warmest sea temp:
August 69.4 °F
July 68.3 °F
September 65.4 °F
Coldest months:
January 26.9 °F
December 29.4 °F
February 29.9 °F
Rainiest months:
June 12 days
May 11 days
July 10 days
Windiest months:
January 4.8 mph
December 4.8 mph
February 4.7 mph

Chamonix on a weather map

Chamonix
+30°F
NW 11 mph
Feels like: +21°F
Precip.: 73%
Places in France:
Name
°F
+48°F
+57°F
+54°F
+48°F
+57°F
+66°F
+57°F
+57°F
+59°F
+55°F
+46°F
+57°F
+57°F
+30°F
+46°F
24 Hours Forecast
Chamonix
Local time: 08:42
March 29, friday
0900
30°F
NW
11 mph
1200
34°F
NW
11 mph
1500
34°F
NW
11 mph
1800
32°F
NW
12 mph
2100
30°F
NW
12 mph
March 30, saturday
0000
30°F
NW
11 mph
0300
28°F
NW
11 mph
0600
28°F
NW
11 mph
Units of measurement: °C / °F