Brecon weather in September 2025

Expect 59°F daytime maximum temperatures in the shade with on average 4 hours of sunshine per day in Brecon in September. Check more long-term weather averages for Brecon in September before you book your next holiday to Wales in 2025/2026.

  • 59°F maximum daytime temperature in September in Brecon59
    59°F max day temperature
  • 4 hours of sunshine per day
  • 17 days with some rainfall in September in Brecon17
    17 days with some rainfall
  • 46°F minimum night-time temperature in September in Brecon46
    46°F min night temperature
  • 13 hours of daylight per day in September in Brecon13
    13 hours of daylight per day
  • No heat & humidity in September in Brecon0
    No heat & humidity
  • 5.6 inches monthly rainfall in September in Brecon5.6
    5.6 inches of monthly rainfall
  • UV (maximum) index 4 (Moderate) in September in Brecon4
    4 (Moderate) UV index

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The September weather guide for Wales (Brecon) 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)  |  Imperial (°F)

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More about Wales

How warm is it in Brecon in September?

Daytime temperatures usually reach 59°F in Brecon in September, falling to 46°F at night.

How sunny is it in Brecon in September?

There are normally 4 hours of bright sunshine each day in Brecon in September - that's 31% of daylight hours.

Does it rain in Brecon in September?

There are usually 17 days with some rain in Brecon in September and the average monthly rainfall is 5.6 inches.

Brecon September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:26 19:00
Monday, 15th September 2025 05:48 18:28
Tuesday, 30th September 2025 06:13 17:53

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