Bristol weather in September 2025

Expect daytime maximum temperatures of 18°C in Bristol, England 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 82 mm of rainfall in the month.

  • 18°C maximum daytime temperature in September in Bristol18
    18°C max day temperature
  • 5 hours of sunshine per day
  • 13 days with some rainfall in September in Bristol13
    13 days with some rainfall
  • 10°C minimum night-time temperature in September in Bristol10
    10°C min night temperature
  • 13 hours of daylight per day in September in Bristol13
    13 hours of daylight per day
  • No heat & humidity in September in Bristol0
    No heat & humidity
  • 82 mm monthly rainfall in September in Bristol82
    82 mm of monthly rainfall
  • UV (maximum) index 4 (Moderate) in September in Bristol4
    4 (Moderate) UV index

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The September weather guide for England (Bristol) 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 England

How hot is it in Bristol in September?

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

How sunny is it in Bristol in September?

There are normally 5 hours of bright sunshine each day in Bristol in September - that's 36% of daylight hours.

Does it rain in Bristol in September?

There are usually 13 days with some rain in Bristol in September and the average monthly rainfall is 82mm.

Bristol September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:23 18:56
Monday, 15th September 2025 05:46 18:24
Tuesday, 30th September 2025 06:10 17:50

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