Cardiff weather in September 2024

Expect 18°C daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in Cardiff in September. Check more long-term weather averages for Cardiff in September before you book your next holiday to Wales in 2024/2025.

  • 18°C maximum daytime temperature in September in Cardiff18
    18°C max day temperature
  • 5 hours of sunshine per day
  • 15 days with some rainfall in September in Cardiff15
    15 days with some rainfall
  • 10°C minimum night-time temperature in September in Cardiff10
    10°C min night temperature
  • 13 hours of daylight per day in September in Cardiff13
    13 hours of daylight per day
  • No heat & humidity in September in Cardiff0
    No heat & humidity
  • 91 mm monthly rainfall in September in Cardiff91
    91 mm of monthly rainfall
  • UV (maximum) index 4 (Moderate) in September in Cardiff4
    4 (Moderate) UV index
  • 17°C sea temperature in September in Cardiff17
    17°C sea temperature

More about Cardiff

Cardiff by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Wales

National Trust Holidays: 15% off holiday cottages

  • Save EXTRA 15% on UK holiday cottages in 2024
  • Book selected cottages with National Trust Holidays
  • Travel before 29th May 2024 (inclusive)
Show discount codeShow discount code ******TAF
Redeem National Trust Holidays discount code >>

Expires at 23:59 on Wednesday 29th May 2024 · View all National Trust Holidays offers

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)

Back to top

More about Wales

How hot is it in Cardiff in September?

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

How sunny is it in Cardiff in September?

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

How warm is the sea around Cardiff in September?

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

Does it rain in Cardiff in September?

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

Cardiff September sunrise & sunset times

Browse the sunrise and sunset times for Cardiff in September 2024. Select a month to view Cardiff sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Sunday, 1st September 2024 06:26 19:58
Sunday, 15th September 2024 06:48 19:26
Monday, 30th September 2024 07:12 18:52

Related posts

Popular travel offers

Explore holidays in the sun for less

More holidays

Airport parking

More parking

Airport lounges

More lounges

Top ^