Bern weather in September 2025

Expect 18°C daytime maximum temperatures in the shade with on average 6 hours of sunshine per day in Bern in September. Check more long-term weather averages for Bern in September before you book your next holiday to Switzerland in 2025/2026.

  • 18°C maximum daytime temperature in September in Bern18
    18°C max day temperature
  • 6 hours of sunshine per day
  • 13 days with some rainfall in September in Bern13
    13 days with some rainfall
  • 9°C minimum night-time temperature in September in Bern9
    9°C min night temperature
  • 13 hours of daylight per day in September in Bern13
    13 hours of daylight per day
  • No heat & humidity in September in Bern0
    No heat & humidity
  • 80 mm monthly rainfall in September in Bern80
    80 mm of monthly rainfall
  • UV (maximum) index 5 (Moderate) in September in Bern5
    5 (Moderate) UV index

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The September weather guide for Switzerland (Bern) 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 / mm)  |  Imperial (°F / inches)

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More about Switzerland

How hot is it in Bern in September?

Daytime temperatures usually reach 18°C in Bern in September, falling to 9°C at night.

How sunny is it in Bern in September?

There are normally 6 hours of bright sunshine each day in Bern in September - that's 45% of daylight hours.

Does it rain in Bern in September?

There are usually 13 days with some rain in Bern in September and the average monthly rainfall is 80mm.

Bern September sunrise & sunset times

Browse the sunrise and sunset times for Bern in September 2025. Select a month to view Bern sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:50 19:10
Monday, 15th September 2025 06:08 18:42
Tuesday, 30th September 2025 06:28 18:12

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