Weather in Interlaken: September
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Average day temperature: | 56.8°F |
| Average night temperature: | 42.6°F | |
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Number of sunny days: | 13 days |
| Day length: | 11.7 - 13.3 hours | |
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Number of rainy days: | 7 days |
| Precipitation totals: | 3.5 in. | |
| more information | ||
14 days
forecast
forecast
| Interlaken |
weather in
October
October
| Interlaken |
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 Interlaken in September is 3.6 in. Other months of the year show relatively similar values.
Wind speed in September, mph
The average wind speed value in September is 3.1 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: 6.9.
Best time for vacation in Interlaken
Interlaken on a weather map
Places in Switzerland:
Name
°F
24 Hours Forecast
Interlaken
Local time: 08:50
December 05, friday
0900
27°F
SE
2 mph
2 mph
1200
28°F
SE
2 mph
2 mph
1500
28°F
SE
2 mph
2 mph
1800
23°F
NW
2 mph
2 mph
2100
19°F
NW
6 mph
6 mph
December 06, saturday
0000
21°F
NW
5 mph
5 mph
0300
25°F
NW
5 mph
5 mph
0600
25°F
N
6 mph
6 mph
