Wales weather in September 2022

  • 18°C maximum daytime temperature in September in Wales (Cardiff)18
    18°C max day temperature
  • 5 hours of sunshine per day
  • 15 days with some rainfall in September in Wales (Cardiff)15
    15 days with some rainfall
  • 10°C minimum night-time temperature in September in Wales (Cardiff)10
    10°C min night temperature
  • 13 hours of daylight per day in September in Wales (Cardiff)13
    13 hours of daylight per day
  • No heat & humidity in September in Wales (Cardiff)0
    No heat & humidity
  • 91 mm monthly rainfall in September in Wales (Cardiff)91
    91 mm of monthly rainfall
  • UV (maximum) index 4 (Moderate) in September in Wales (Cardiff)4
    4 (Moderate) UV index
  • 17°C sea temperature in September in Wales (Cardiff)17
    17°C sea temperature

Below are average maximum temperatures at popular destinations in Wales in September. Select a destination to see more weather parameters.

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The September weather guide for Wales (Cardiff) 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.

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

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More about the UK

How hot is it in Wales in September?

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

How sunny is it in Wales in September?

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

How warm is the sea around Wales in September?

The average sea temperature around Cardiff, Wales in September is 17°C.

Does it rain in Wales in September?

There are usually 15 days with some rain in Cardiff, Wales in September and the average monthly rainfall is 91mm.

Wales September sunrise & sunset times

Browse the sunrise and sunset times for Wales in September 2022. Select a month to view Wales sunrise and sunset times for the next 12 months. The Wales sunrise and sunset times shown below are for Cardiff.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st September 2022 06:25 19:59
Thursday, 15th September 2022 06:47 19:27
Friday, 30th September 2022 07:11 18:53

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