Cardiff weather in December
Cold, with regular rainfall. Average highs of 9°C and lows of 5°C, with around 17 rainy days expected throughout the month.
While December isn't our top-rated month for Cardiff, it has its own appeal — typically lower prices, fewer crowds, and a more local feel.
Average high
9°C
Average low
5°C
Rainy days
17 days
Best months to visit
Year-round
What to do in Cardiff in December
Whatever the weather, Cardiff rewards curious visitors. Here are some of the best ways to spend your time:
Tour Cardiff Castle from Roman times
Visit the National Museum Cardiff (free)
Explore the Victorian and Edwardian shopping arcades
Walk Bute Park and see Cathays Park's government buildings
Day trip to nearby Caerphilly Castle
Catch rugby at the Millennium Stadium
What to pack for December
Pack for cold weather — a proper winter coat, thermal layers, waterproof boots, and warm accessories. You'll want a good base layer for outdoor activities.
Browse other months
January
8C
Cold, with regular rainfall.
February
9C
Cold, with some rainy days.
March
10C
Cool, with regular rainfall.
April
13C
Cool, with some rainy days.
May
16C
Cool, with some rainy days.
June
19C
Mild and comfortable, with some rainy days.
July
21C
Mild and comfortable, with some rainy days.
August
20C
Mild and comfortable, with some rainy days.
September
18C
Mild and comfortable, with some rainy days.
October
15C
Cool, with regular rainfall.
November
11C
Cool, with regular rainfall.
December (you are here)
9C
Cold, with regular rainfall.
Book your December trip to Cardiff
Find hotels, tours and experiences for the perfect escape.
