Cologne weather in September 2025

Expect daytime maximum temperatures of 20°C in Cologne in September based on long-term weather averages. There are 5 hours of sunshine per day on average with 15 days with some rainfall and typically 68 mm of rainfall in the month.

  • 20°C maximum daytime temperature in September in Cologne20
    20°C max day temperature
  • 5 hours of sunshine per day
  • 15 days with some rainfall in September in Cologne15
    15 days with some rainfall
  • 11°C minimum night-time temperature in September in Cologne11
    11°C min night temperature
  • 13 hours of daylight per day in September in Cologne13
    13 hours of daylight per day
  • No heat & humidity in September in Cologne0
    No heat & humidity
  • 68 mm monthly rainfall in September in Cologne68
    68 mm of monthly rainfall
  • UV (maximum) index 4 (Moderate) in September in Cologne4
    4 (Moderate) UV index

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The September weather guide for Germany (Cologne) 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 Cologne in September?

Daytime temperatures usually reach 20°C in Cologne in September, falling to 11°C at night.

How sunny is it in Cologne in September?

There are normally 5 hours of bright sunshine each day in Cologne in September - that's 37% of daylight hours.

Does it rain in Cologne in September?

There are usually 15 days with some rain in Cologne in September and the average monthly rainfall is 68mm.

Cologne September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:46 19:17
Monday, 15th September 2025 06:08 18:46
Tuesday, 30th September 2025 06:31 18:12

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