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

  • Browse top deals on spa breaks in UK & Ireland
  • Search by postcode, venue, town or county
  • Filter deals by destination, price, package & facilities

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

Top ^