Weather in Grindelwald: September
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Average day temperature: | 55.8°F |
| Average night temperature: | 37.0°F | |
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Number of sunny days: | 10 days |
| Day length: | 11.7 - 13.3 hours | |
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Number of rainy days: | 7 days |
| Precipitation totals: | 4.0 in. | |
| more information | ||
14 days
forecast
forecast
| Grindelwald |
weather in
October
October
| Grindelwald |
Air temperature in September, °F
Show year:
2025
2024
2023
The highest day temperature during September of 2025 was 70°F. At the same time the lowest night temperature was 32°F. Daily and nightly averages during September were 54.1°F and 43.3°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 Grindelwald in September is 3.7 in. Other months of the year show relatively similar values.
Wind speed in September, mph
The average wind speed value in September is 3.2 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: 6.8.
Best time for vacation in Grindelwald
Grindelwald on a weather map
Places in Switzerland:
Name
°F
24 Hours Forecast
Grindelwald
Local time: 15:06
December 16, tuesday
1800
34°F
NW
6 mph
6 mph
2100
32°F
NW
6 mph
6 mph
December 17, wednesday
0000
30°F
NW
6 mph
6 mph
0300
30°F
NW
6 mph
6 mph
0600
30°F
NW
5 mph
5 mph
0900
30°F
NW
4 mph
4 mph
1200
39°F
SE
1 mph
1 mph
1500
37°F
S
1 mph
1 mph
