Weather in St Moritz: September
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Average day temperature: | 52.1°F |
| Average night temperature: | 33.7°F | |
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Number of sunny days: | 9 days |
| Day length: | 11.7 - 13.3 hours | |
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Number of rainy days: | 6 days |
| Precipitation totals: | 4.1 in. | |
| more information | ||
14 days
forecast
forecast
| St Moritz |
weather in
October
October
| St Moritz |
Air temperature in September, °F
Show year:
2025
2024
2023
The highest day temperature during September of 2025 was 69°F. At the same time the lowest night temperature was 22°F. Daily and nightly averages during September were 52.2°F and 35.7°F.
Sunny, partly cloudy and cloudy days
Number of sunny, partly cloudy and cloudy days in September is almost equal.
Precipitation total in September, in.
Precipitation total value in St Moritz in September is 4.2 in. Other months of the year show relatively similar values.
Wind speed in September, mph
The average wind speed value in September is 5.2 mph The wind's strength is relatively same during the whole 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: 6.5.
Best time for vacation in St Moritz
St Moritz on a weather map
Places in Switzerland:
Name
°F
24 Hours Forecast
St Moritz
Local time: 09:19
December 05, friday
1200
25°F
S
6 mph
6 mph
1500
25°F
S
6 mph
6 mph
1800
16°F
SW
5 mph
5 mph
2100
3°F
NW
3 mph
3 mph
December 06, saturday
0000
7°F
N
6 mph
6 mph
0300
9°F
N
5 mph
5 mph
0600
10°F
N
4 mph
4 mph
0900
12°F
N
3 mph
3 mph
