Luzern weather in September 2025

Expect 18°C daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in Luzern in September based on long-term weather averages. There is usually 13 days with some rainfall and 101 mm of average monthly rainfall in September.

  • 18°C maximum daytime temperature in September in Luzern18
    18°C max day temperature
  • 5 hours of sunshine per day
  • 13 days with some rainfall in September in Luzern13
    13 days with some rainfall
  • 10°C minimum night-time temperature in September in Luzern10
    10°C min night temperature
  • 13 hours of daylight per day in September in Luzern13
    13 hours of daylight per day
  • No heat & humidity in September in Luzern0
    No heat & humidity
  • 101 mm monthly rainfall in September in Luzern101
    101 mm of monthly rainfall
  • UV (maximum) index 5 (Moderate) in September in Luzern5
    5 (Moderate) UV index

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The September weather guide for Switzerland (Luzern) 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 Luzern in September?

Daytime temperatures usually reach 18°C in Luzern in September, falling to 10°C at night.

How sunny is it in Luzern in September?

There are normally 5 hours of bright sunshine each day in Luzern in September - that's 43% of daylight hours.

Does it rain in Luzern in September?

There are usually 13 days with some rain in Luzern in September and the average monthly rainfall is 101mm.

Luzern September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:46 19:06
Monday, 15th September 2025 06:04 18:38
Tuesday, 30th September 2025 06:24 18:08

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