Which is the hottest month in Cardiff?

The hottest time of year in Cardiff is normally July. Expect maximum daytime temperatures to reach 20°C.

Which month has the most rain in Cardiff?

In terms of rainfall, December is usually the wettest month in Cardiff with 109mm on average. There are normally 19 days in December with some rain.

When is it sunniest in Cardiff?

The sunniest time of year in Cardiff is normally August with bright sunshine on average for 41% of daylight hours; that's 6 hours of sunshine per day.

When is the sea warmest in Cardiff?

The sea is usually at its warmest in Cardiff in August when the water temperature reaches 18°C.

Best time to visit Cardiff

Q: When is the best time to visit Cardiff?

The best times to visit Cardiff, Wales are in June, July and August Maximum daytime temperature = 22 - 30°C. Daily hours of sunshine = 8 hours or more.

The best times to visit Cardiff, Wales are in June, July and August based on our default weather conditions. Find out more about the weather and update your preferences to see which months best match.

Cardiff by month

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

Recommended for Wales

Park Inn: up to 10% off stays for members

Sale

Save up to 10% on stays at Park Inn hotels
Enjoy members rate with extra 10% off
Book stays worldwide with Park Inn

Go to Park Inn deal >>

View all Park Inn offers

When is the best time to visit Cardiff?

The best times to visit Cardiff, Wales are in June, July and August based on the following average weather conditions.

Maximum daytime temperature = 22 - 30°C [remove]
Daily hours of sunshine = 8 hours or more [remove]

Change the criteria to reflect your weather preferences.

0.5
Jan
0.5
Feb
1.5
Mar
1.5
Apr
2
May
4
Jun
4
Jul
4
Aug
2.5
Sep
1
Oct
0.5
Nov
0.5
Dec

Change criteria

Max Day Temperature (°C)

7
Jan
7
Feb
10
Mar
12
Apr
16
May
19
Jun
20
Jul
20
Aug
18
Sep
14
Oct
10
Nov
8
Dec

Hours of Sunshine (daily)

2
Jan
3
Feb
4
Mar
5
Apr
6
May
7
Jun
6
Jul
6
Aug
5
Sep
3
Oct
2
Nov
2
Dec

Best time to visit

Destination

Daytime temperature

Sunshine hours

Sea temperature

Monthly rainfall

Days with some rain

Heat & humidity

The weather guide for Wales (Cardiff) shows long term weather averages processed from data supplied by CRU (University of East Anglia) & today's weather forecast provided by meteoblue. Find out more about our data sources.

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