Cardiff weather live forecast

Today's maximum temperature in Cardiff is expected to be 20°C. Select a day from the live weather forecast for Cardiff, Wales, UK for more weather parameters.

Monday
21st Sep
20

10

7

3
Tuesday
22nd Sep
21

13

5

2
Wednesday
23rd Sep
20

10

8

3
Thursday
24th Sep
20

8

9

4
Friday
25th Sep
21

11

5

4

5-day weather forecast updated at 04:00 on Sunday 20th September 2026 GMT

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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 Monday 21st September 2026

Expect broken clouds in Cardiff, Wales with a maximum temperature of 20°C, maximum UV of 3 (Moderate) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 10 kph from the west.

20
°C maximum temperature
10
°C minimum temperature
broken clouds
7
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
10
kph wind from W

Cardiff weather for Tuesday 22nd September 2026

Expect broken clouds in Cardiff, Wales with a maximum temperature of 21°C, maximum UV of 2 (Low) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 10 kph from the south-west.

21
°C maximum temperature
13
°C minimum temperature
broken clouds
5
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
0
no heat & humidity
10
kph wind from SW

Cardiff weather for Wednesday 23rd September 2026

Expect scattered clouds in Cardiff, Wales with a maximum temperature of 20°C, maximum UV of 3 (Moderate) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 9 kph from the west.

20
°C maximum temperature
10
°C minimum temperature
scattered clouds
8
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
20
°C wind chill
9
kph wind from W

Cardiff weather for Thursday 24th September 2026

Expect scattered clouds in Cardiff, Wales with a maximum temperature of 20°C, maximum UV of 4 (Moderate) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 10 kph from the south-west.

20
°C maximum temperature
8
°C minimum temperature
scattered clouds
9
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
20
°C wind chill
10
kph wind from SW

Cardiff weather for Friday 25th September 2026

Expect broken clouds in Cardiff, Wales with a maximum temperature of 21°C, maximum UV of 4 (Moderate) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 10 kph from the south-west.