Alps weather in September 2025

Expect 7°C daytime maximum temperatures in the shade with on average 6 hours of sunshine per day in Alps in September. Check more long-term weather averages for Alps in September before you book your next holiday to Alps in 2025/2026.

  • 7°C maximum daytime temperature in September in Alps (Zermatt)7
    7°C max day temperature
  • 6 hours of sunshine per day
  • 15 days with some rainfall in September in Alps (Zermatt)15
    15 days with some rainfall
  • 1°C minimum night-time temperature in September in Alps (Zermatt)1
    1°C min night temperature
  • 13 hours of daylight per day in September in Alps (Zermatt)13
    13 hours of daylight per day
  • No heat & humidity in September in Alps (Zermatt)0
    No heat & humidity
  • 140 mm monthly rainfall in September in Alps (Zermatt)140
    140 mm of monthly rainfall
  • UV (maximum) index 5 (Moderate) in September in Alps (Zermatt)5
    5 (Moderate) UV index

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The September weather guide for 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.

Top Alps destinations

Below are average maximum temperatures at popular countries, regions and places in the Alps in September. Select a holiday destination to see more weather parameters.

Metric (°C / mm)  |  Imperial (°F / inches)

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How cold is it in the Alps in September?

Daytime temperatures usually reach 7°C in Zermatt, Alps in September, falling to 1°C at night.

How sunny is it in the Alps in September?

There are normally 6 hours of bright sunshine each day in Zermatt, Alps in September - that's 47% of daylight hours.

Does it rain in the Alps in September?

There are usually 15 days with some rain in Zermatt, Alps in September and the average monthly rainfall is 140mm.

Alps September sunrise & sunset times

Browse the sunrise and sunset times for Alps in September 2025. Select a month to view Alps sunrise and sunset times for the next 12 months. The Alps sunrise and sunset times shown below are for Zermatt.

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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