Gower Peninsula weather in September 2025

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

  • 17°C maximum daytime temperature in September in Gower Peninsula17
    17°C max day temperature
  • 5 hours of sunshine per day
  • 16 days with some rainfall in September in Gower Peninsula16
    16 days with some rainfall
  • 11°C minimum night-time temperature in September in Gower Peninsula11
    11°C min night temperature
  • 13 hours of daylight per day in September in Gower Peninsula13
    13 hours of daylight per day
  • No heat & humidity in September in Gower Peninsula0
    No heat & humidity
  • 111 mm monthly rainfall in September in Gower Peninsula111
    111 mm of monthly rainfall
  • UV (maximum) index 4 (Moderate) in September in Gower Peninsula4
    4 (Moderate) UV index
  • 17°C sea temperature in September in Gower Peninsula17
    17°C sea temperature

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Gower Peninsula by month

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The September weather guide for Wales (Gower Peninsula) 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 Wales

How warm is it in Gower Peninsula in September?

Daytime temperatures usually reach 17°C in Gower Peninsula in September, falling to 11°C at night.

How sunny is it in Gower Peninsula in September?

There are normally 5 hours of bright sunshine each day in Gower Peninsula in September - that's 37% of daylight hours.

How warm is the sea around Gower Peninsula in September?

The average sea temperature around Gower Peninsula in September is 17°C.

Does it rain in Gower Peninsula in September?

There are usually 16 days with some rain in Gower Peninsula in September and the average monthly rainfall is 111mm.

Gower Peninsula September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:29 19:03
Monday, 15th September 2025 05:52 18:31
Tuesday, 30th September 2025 06:16 17:56

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