Cardiff Weather

Cardiff experiences unpredictable weather due to its location on the Severn estuary and therefore feels the direct effects of the Atlantic Ocean.

Summer

The best time to visit is undoubtedly in the summer, from June to early September, with the hottest months being July and August, where temperatures often reach the high 20s. June sees the least amount of rainfall, as well as receiving the most daylight hours. The city is also less crowded with tourists making for an altogether better holiday. 

Winter

October to February is the coldest and wettest time of the year; temperatures often dip below freezing in December, January and February. If you plan on visiting Cardiff during the wintertime make sure you bring a thick coat, a scarf and an umbrella.

Average Temperature (°C)

40 30 20 10 0

Jan 4.5

Feb 4.4

Mar 6.0

Apr 8.0

May 11.1

Jun 14.0

Jul 16.0

Aug 15.9

Sep 14.0

Oct 11.2

Nov 7.4

Dec 5.6

Rainfall (mm)

90 68 45 22 0

Jan 90.6

Feb 64.3

Mar 73.3

Apr 52.3

May 62.3

Jun 64.6

Jul 69.0

Aug 76.6

Sep 82.5

Oct 92.7

Nov 98.1

Dec 94.5