Suffolk weather in September 2025

Expect daytime maximum temperatures of 18°C in Suffolk, UK in September based on long-term weather averages. There are 5 hours of sunshine per day on average with 13 days with some rainfall and typically 50 mm of rainfall in the month.

  • 18°C maximum daytime temperature in September in Suffolk (Norwich)18
    18°C max day temperature
  • 5 hours of sunshine per day
  • 13 days with some rainfall in September in Suffolk (Norwich)13
    13 days with some rainfall
  • 10°C minimum night-time temperature in September in Suffolk (Norwich)10
    10°C min night temperature
  • 13 hours of daylight per day in September in Suffolk (Norwich)13
    13 hours of daylight per day
  • No heat & humidity in September in Suffolk (Norwich)0
    No heat & humidity
  • 50 mm monthly rainfall in September in Suffolk (Norwich)50
    50 mm of monthly rainfall
  • UV (maximum) index 4 (Moderate) in September in Suffolk (Norwich)4
    4 (Moderate) UV index

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The September weather guide for Suffolk (Norwich) 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 Suffolk destinations

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

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

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More about the UK

How hot is it in Suffolk in September?

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

How sunny is it in Suffolk in September?

There are normally 5 hours of bright sunshine each day in Norwich, Suffolk in September - that's 38% of daylight hours.

Does it rain in Suffolk in September?

There are usually 13 days with some rain in Norwich, Suffolk in September and the average monthly rainfall is 50mm.

Suffolk September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:06 18:43
Monday, 15th September 2025 05:29 18:10
Tuesday, 30th September 2025 05:55 17:34

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