Cardiff weather live forecast

Today's maximum temperature in Cardiff is expected to be 18°C. Select a day from the live weather forecast for Cardiff, Wales, UK for more weather parameters.

5-day weather forecast updated at 04:00 on Wednesday 3rd September 2025 GMT

More about Cardiff

Cardiff by month

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

Recommended for Wales

easyHotel: Cheap hotels from just £27

  • Save on hotel stays across Europe with easyHotel
  • Prices starting from just £27 per night
  • Hotels located across the UK, France & more
Go to easyHotel deal >>

View all easyHotel offers

The 5-day weather forecast for Wales (Cardiff) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Cardiff weather forecast by day

Below are the detailed weather forecasts for Cardiff for the next 5 days.

Cardiff weather for Wednesday 3rd September 2025

Expect isolated thunderstorms in Cardiff, Wales with a maximum temperature of 18°C, maximum UV of 3 (Moderate) and 3 hours of bright sunshine. There are 20-30 mm of rainfall expected with 81% chance of some rain and a moderate breeze of 28 kph from the west.

  • 18°C maximum temperature18
    °C maximum temperature
  • 14°C minimum temperature14
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 3 hours of bright sunshine3
    hours of sunshine
  • UV (maximum) index 3 (Moderate)3
    UV index (Moderate)
  • 81% chance of some rain81
    % chance of some rain
  • 20-30 mm of rainfall expected<30
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Moderate breeze of 28 kph from the West28
    kph wind from W

Back to top

Cardiff weather for Thursday 4th September 2025

Expect sunshine and showers in Cardiff, Wales with a maximum temperature of 17°C, maximum UV of 3 (Moderate) and 6 hours of bright sunshine. There are 20-30 mm of rainfall expected with 76% chance of some rain and a moderate breeze of 21 kph from the west.

  • 17°C maximum temperature17
    °C maximum temperature
  • 12°C minimum temperature12
    °C minimum temperature
  • Sunshine and showers
    sunshine and showers
  • 6 hours of bright sunshine6
    hours of sunshine
  • UV (maximum) index 3 (Moderate)3
    UV index (Moderate)
  • 76% chance of some rain76
    % chance of some rain
  • 20-30 mm of rainfall expected<30
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Moderate breeze of 21 kph from the West21
    kph wind from W

Back to top

Cardiff weather for Friday 5th September 2025

Expect broken clouds in Cardiff, Wales with a maximum temperature of 19°C, maximum UV of 4 (Moderate) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 15 kph from the west.

  • 19°C maximum temperature19
    °C maximum temperature
  • 11°C minimum temperature11
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 6 hours of bright sunshine6
    hours of sunshine
  • UV (maximum) index 4 (Moderate)4
    UV index (Moderate)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 19°C wind chill19
    °C wind chill
  • Gentle breeze of 15 kph from the West15
    kph wind from W

Back to top

Cardiff weather for Saturday 6th September 2025

Expect broken clouds in Cardiff, Wales with a maximum temperature of 22°C, maximum UV of 3 (Moderate) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 19 kph from the south-east.

  • 22°C maximum temperature22
    °C maximum temperature
  • 12°C minimum temperature12
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 6 hours of bright sunshine6
    hours of sunshine
  • UV (maximum) index 3 (Moderate)3
    UV index (Moderate)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 22°C wind chill22
    °C wind chill
  • Gentle breeze of 19 kph from the South-East19
    kph wind from SE

Back to top

Cardiff weather for Sunday 7th September 2025

Expect mostly cloudy with light rain in Cardiff, Wales with a maximum temperature of 21°C, maximum UV of 3 (Moderate) and 1 hour of bright sunshine. There are 2-5 mm of rainfall expected with 71% chance of some rain and a moderate breeze of 20 kph from the south.

  • 21°C maximum temperature21
    °C maximum temperature
  • 14°C minimum temperature14
    °C minimum temperature
  • Mostly cloudy with light rain
    mostly cloudy with light rain
  • 1 hour of bright sunshine1
    hour of sunshine
  • UV (maximum) index 3 (Moderate)3
    UV index (Moderate)
  • 71% chance of some rain71
    % chance of some rain
  • 2-5 mm of rainfall expected<5
    mm of rainfall expected
  • 21°C wind chill21
    °C wind chill
  • Moderate breeze of 20 kph from the South20
    kph wind from S

Back to top

National Holidays: 10% off last minute getaways

  • Save 10% on last minute breaks with National Holidays
  • Book coach breaks across the England, Wales & beyond
  • Use promo code at check out for offer to apply
Show discount codeShow discount code ******A10
Redeem National Holidays discount code >>

View all National Holidays offers

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

Back to top

More about Wales

Related posts

Popular travel offers

Explore holidays in the sun for less

More holidays

Airport parking

More parking

Airport lounges

More lounges

Top ^