Frankfurt weather in September 2025

Expect 20°C daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in Frankfurt in September. Check more long-term weather averages for Frankfurt in September before you book your next holiday to Germany in 2025/2026.

  • 20°C maximum daytime temperature in September in Frankfurt20
    20°C max day temperature
  • 5 hours of sunshine per day
  • 12 days with some rainfall in September in Frankfurt12
    12 days with some rainfall
  • 10°C minimum night-time temperature in September in Frankfurt10
    10°C min night temperature
  • 13 hours of daylight per day in September in Frankfurt13
    13 hours of daylight per day
  • No heat & humidity in September in Frankfurt0
    No heat & humidity
  • 48 mm monthly rainfall in September in Frankfurt48
    48 mm of monthly rainfall
  • UV (maximum) index 4 (Moderate) in September in Frankfurt4
    4 (Moderate) UV index

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The September weather guide for Germany (Frankfurt) 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 Germany

How hot is it in Frankfurt in September?

Daytime temperatures usually reach 20°C in Frankfurt in September, falling to 10°C at night.

How sunny is it in Frankfurt in September?

There are normally 5 hours of bright sunshine each day in Frankfurt in September - that's 41% of daylight hours.

Does it rain in Frankfurt in September?

There are usually 12 days with some rain in Frankfurt in September and the average monthly rainfall is 48mm.

Frankfurt September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:40 19:09
Monday, 15th September 2025 06:01 18:39
Tuesday, 30th September 2025 06:24 18:06

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