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Swiss Alps weather in September 2025
Expect 45°F daytime maximum temperatures in the shade with on average 6 hours of sunshine per day in Swiss Alps in September. Check more long-term weather averages for Swiss Alps in September before you book your next holiday to Swiss Alps in 2025/2026.
- 4545°F max day temperature
- 6 hours of sunshine per day
- 1515 days with some rainfall
- 3434°F min night temperature
- 1313 hours of daylight per day
- 0No heat & humidity
- 5.55.5 inches of monthly rainfall
- 55 (Moderate) UV index
More about the Swiss Alps
Swiss Alps by month
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Recommended for the Swiss Alps
The September weather guide for Swiss Alps (Zermatt) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
Metric (°C) | Imperial (°F)
More about Switzerland
How cold is it in the Swiss Alps in September?
Daytime temperatures usually reach 45°F in Zermatt, Swiss Alps in September, falling to 34°F at night.
How sunny is it in the Swiss Alps in September?
There are normally 6 hours of bright sunshine each day in Zermatt, Swiss Alps in September - that's 47% of daylight hours.
Does it rain in the Swiss Alps in September?
There are usually 15 days with some rain in Zermatt, Swiss Alps in September and the average monthly rainfall is 5.5 inches.
Swiss Alps September sunrise & sunset times
Browse the sunrise and sunset times for Swiss Alps in September 2025. Select a month to view Swiss Alps sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
Date | Sunrise times | Sunset times |
---|---|---|
Monday, 1st September 2025 | 05:50 | 19:07 |
Monday, 15th September 2025 | 06:07 | 18:40 |
Tuesday, 30th September 2025 | 06:26 | 18:11 |
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