Weather in Chamonix: September
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Average day temperature: | 55.5°F |
| Average night temperature: | 39.7°F | |
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Sea water temperature: | 65.6°F |
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Number of sunny days: | 14 days |
| Day length: | 11.8 - 13.3 hours | |
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Number of rainy days: | 6 days |
| Precipitation totals: | 3.0 in. | |
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forecast
| Chamonix |
temperature
| Chamonix |
Air temperature in September, °F
The highest day temperature during September of 2024 was 65°F. At the same time the lowest night temperature was 27°F. Day and night temperature averages during September were 50.1°F and 39.9°F.
Sea water temperature in Chamonix in September, °F
The average sea water temperature in September of 2024 was 68.0°F. The highest and lowest sea temperatures during the month were 73.0°F and 63.3°F.
Mostly all days in September are partly cloudy but sunny or cloudy days are also possible.
Precipitation total in September, in.
Precipitation total value in Chamonix in September is 2.9 in. Other months of the year show relatively similar values.
The average wind speed value in September is 3.9 mph The wind's strength is relatively same during the whole year.
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: 7.6.
Best time for vacation in Chamonix
Chamonix on a weather map
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