Cardiff weather live forecast

Today's maximum temperature in Cardiff is expected to be 15°C. Select a day from the live weather forecast for Cardiff, Wales, UK for more weather parameters.

Thursday
19th Mar
15

5

11

3
Friday
20th Mar
14

4

9

3
Saturday
21st Mar
12

4

8

3
Sunday
22nd Mar
11

4

3

3
Monday
23rd Mar
11

6

5

3

5-day weather forecast updated at 04:00 on Wednesday 18th March 2026 GMT

More about Cardiff

Cardiff by month

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

Recommended for Wales

Spabreaks.com promo code: 8% off bookings & vouchers

Exclusive

Save 8% on spa breaks, spa days & gift vouchers
Check out latest offers on over 550 spas across the UK
A guaranteed experience to suit your budget & occasion

Show discount code

******SB8

Redeem Spabreaks.com discount code >>

Expires at 23:59 on Thursday 31st Dec 2026 · View all Spabreaks.com offers

Spa break finder

Destination

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 Thursday 19th March 2026

Expect clear skies in Cardiff, Wales with a maximum temperature of 15°C, maximum UV of 3 (Moderate) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 15 kph from the north-east.

15
°C maximum temperature
5
°C minimum temperature
clear skies
11
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
15
°C wind chill
15
kph wind from NE

Cardiff weather for Friday 20th March 2026

Expect scattered clouds in Cardiff, Wales with a maximum temperature of 14°C, maximum UV of 3 (Moderate) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 16 kph from the north-east.

14
°C maximum temperature
4
°C minimum temperature
scattered clouds
9
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
14
°C wind chill
16
kph wind from NE

Cardiff weather for Saturday 21st March 2026

Expect broken clouds in Cardiff, Wales with a maximum temperature of 12°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 east.

12
°C maximum temperature
4
°C minimum temperature
broken clouds
8
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
12
°C wind chill
9
kph wind from E

Cardiff weather for Sunday 22nd March 2026

Expect broken clouds in Cardiff, Wales with a maximum temperature of 11°C, maximum UV of 3 (Moderate) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 8 kph from the west.

11
°C maximum temperature
4
°C minimum temperature
broken clouds
3
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
8
kph wind from W

Cardiff weather for Monday 23rd March 2026

Expect mostly cloudy with light rain in Cardiff, Wales with a maximum temperature of 11°C, maximum UV of 3 (Moderate) and 5 hours of bright sunshine. There are 0-2 mm of rainfall expected with 41% chance of some rain and a moderate breeze of 20 kph from the west.