- Book summer 2022 holidays in Pembrokeshire, Wales
- Stay at the Bluestone National Park resort
- Enjoy self-catering private lodges or village cottages
Wales weather in September 2022
- 1818°C max day temperature
- 1515 days with some rainfall
- 1010°C min night temperature
- 1313 hours of daylight per day
- 0No heat & humidity
- 9191 mm of monthly rainfall
- 44 (Moderate) UV index
- 1717°C sea temperature
Below are average maximum temperatures at popular destinations in Wales in September. Select a destination to see more weather parameters.
Recommended for Wales
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.
Metric (°C / mm) | Imperial (°F / inches)
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.
|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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