St Davids weather in September 2025

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

  • 17°C maximum daytime temperature in September in St Davids17
    17°C max day temperature
  • 5 hours of sunshine per day
  • 16 days with some rainfall in September in St Davids16
    16 days with some rainfall
  • 11°C minimum night-time temperature in September in St Davids11
    11°C min night temperature
  • 13 hours of daylight per day in September in St Davids13
    13 hours of daylight per day
  • No heat & humidity in September in St Davids0
    No heat & humidity
  • 80 mm monthly rainfall in September in St Davids80
    80 mm of monthly rainfall
  • UV (maximum) index 4 (Moderate) in September in St Davids4
    4 (Moderate) UV index
  • 15°C sea temperature in September in St Davids15
    15°C sea temperature

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The September weather guide for Wales (St Davids) 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 St Davids in September?

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

How sunny is it in St Davids in September?

There are normally 5 hours of bright sunshine each day in St Davids in September - that's 39% of daylight hours.

How warm is the sea around St Davids in September?

The average sea temperature around St Davids in September is 15°C.

Does it rain in St Davids in September?

There are usually 16 days with some rain in St Davids in September and the average monthly rainfall is 80mm.

St Davids September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:33 19:08
Monday, 15th September 2025 05:56 18:35
Tuesday, 30th September 2025 06:20 18:00

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