Klagenfurt weather in September 2025

Expect 20°C daytime maximum temperatures in the shade with on average 6 hours of sunshine per day in Klagenfurt in September. Check more long-term weather averages for Klagenfurt in September before you book your next holiday to Austria in 2025/2026.

  • 20°C maximum daytime temperature in September in Klagenfurt20
    20°C max day temperature
  • 6 hours of sunshine per day
  • 11 days with some rainfall in September in Klagenfurt11
    11 days with some rainfall
  • 9°C minimum night-time temperature in September in Klagenfurt9
    9°C min night temperature
  • 13 hours of daylight per day in September in Klagenfurt13
    13 hours of daylight per day
  • No heat & humidity in September in Klagenfurt0
    No heat & humidity
  • 140 mm monthly rainfall in September in Klagenfurt140
    140 mm of monthly rainfall
  • UV (maximum) index 5 (Moderate) in September in Klagenfurt5
    5 (Moderate) UV index

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The September weather guide for Austria (Klagenfurt) 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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How hot is it in Klagenfurt in September?

Daytime temperatures usually reach 20°C in Klagenfurt in September, falling to 9°C at night.

How sunny is it in Klagenfurt in September?

There are normally 6 hours of bright sunshine each day in Klagenfurt in September - that's 48% of daylight hours.

Does it rain in Klagenfurt in September?

There are usually 11 days with some rain in Klagenfurt in September and the average monthly rainfall is 140mm.

Klagenfurt September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:23 18:42
Monday, 15th September 2025 05:41 18:14
Tuesday, 30th September 2025 06:00 17:44

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