Denmark weather in September 2025

Expect 17°C daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in Denmark in September. Check more long-term weather averages for Denmark in September before you book your next holiday to Denmark in 2025/2026.

  • 17°C maximum daytime temperature in September in Denmark (Copenhagen)17
    17°C max day temperature
  • 5 hours of sunshine per day
  • 14 days with some rainfall in September in Denmark (Copenhagen)14
    14 days with some rainfall
  • 10°C minimum night-time temperature in September in Denmark (Copenhagen)10
    10°C min night temperature
  • 13 hours of daylight per day in September in Denmark (Copenhagen)13
    13 hours of daylight per day
  • No heat & humidity in September in Denmark (Copenhagen)0
    No heat & humidity
  • 62 mm monthly rainfall in September in Denmark (Copenhagen)62
    62 mm of monthly rainfall
  • UV (maximum) index 3 (Moderate) in September in Denmark (Copenhagen)3
    3 (Moderate) UV index
  • 15°C sea temperature in September in Denmark (Copenhagen)15
    15°C sea temperature

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The September weather guide for Denmark (Copenhagen) 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 Denmark destinations

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

All Denmark destinations

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

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More about Denmark

How warm is it in Denmark in September?

Daytime temperatures usually reach 17°C in Copenhagen, Denmark in September, falling to 10°C at night.

How sunny is it in Denmark in September?

There are normally 5 hours of bright sunshine each day in Copenhagen, Denmark in September - that's 39% of daylight hours.

How warm is the sea around Denmark in September?

The average sea temperature around Copenhagen, Denmark in September is 15°C.

Does it rain in Denmark in September?

There are usually 14 days with some rain in Copenhagen, Denmark in September and the average monthly rainfall is 62mm.

Denmark September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:15 19:03
Monday, 15th September 2025 05:42 18:27
Tuesday, 30th September 2025 06:11 17:47

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