Cardiff weather
Our guide to the weather in Cardiff during December
We've looked at the most up-to-date weather data for Cardiff, covering the last 12 years up to 2026, plus we've asked our team of travel bloggers for their first-hand experiences in order to answer the most frequently asked questions about Cardiff weather in December.
What's the temperature like in Cardiff during December?
The temperature is extremely stable in December with average highs of 9℃ and lows just 4℃ lower at 5℃. The UV index will be low at this time of year, so not something to worry about. However, if you're going to be outside for long periods it's always a good idea to apply a small amount of sunscreen to exposed skin.
Does it snow in Cardiff during December?
Possibly. There's a chance of snow during December but not as much as you might think. Check the local forecast before you leave home so that you can pack appropriate footwear and clothing.
Does it rain in Cardiff during December?
On average, there will be 7 rainy days during the month, amounting to 77.0mm in total. That's broadly comparable with the amount of rain we see in England during the summer months, and would be considered dry. There's a small chance that you'll catch a thunderstorm during your trip.
Is it windy in Cardiff during December?
Expect moderate breeze becoming stronger at times during December, with occasional gusts up to 21mph. With cool air temperatures, any breeze will feel cold.
Holidays in Cardiff
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Cardiff Blog posts
From the UK's most popular travel bloggers
3-Day Wales Itinerary from Cardiff: Castles, Coast, and Countryside
10th March 2026 by The Wandering Quinn
Exploring Wales in just three days may seem like a challenge, but with a well-planned itinerary, you can experience the best of this stunning country. By concentrating on a specific region, particularly around Cardiff, you can uncover a wealth of attractions, from majestic castles to breathtaking coastlines and picturesque countryside. This guide will help you make the most of your Welsh escape, ensuring you don’t miss out on the highlights....
How to See Cardiff in One Day: 24 Hours in the Welsh Capital
12th July 2024 by Inside the Travel Lab
The Welsh capital is perhaps famous for not being famous at all. It’s sized at number eleven in terms of city size in the UK, making it much easier to travel around than London, but much less well known on the international tourist trail. ...
10 TOP Day Trips From Cardiff By Train to Beaches, Towns & Mountains!
25th July 2024 by The Wandering Quinn
Are you seeking fantastic day trips from Cardiff accessible by train? Whether you fancy staying near Cardiff or venturing deeper into South Wales, this post has got you covered. Discover 10 delightful day trips from Cardiff by train, ranging from beaches to towns and mountains!...
Welsh History Comes Alive - St Fagans Museum Cardiff
21st May 2024 by Fly Drive Explore
Old Welsh things, not us but the historic Welsh buildings around the grounds of St Fagans National Museum of History near Cardiff, Wales. St Fagans is one of Europe's leading open-air museums and Wales's most popular heritage attraction. We take a trip to the museum which is only 15 minutes from the Welsh capital city of Cardiff. It is free but parking is £6 at the time of recording. There is enough to see and do in the museum for at least a half-day visit....
14 BEST Beaches in South Wales To Visit! For Walking, Surfing & Families.
28th February 2024 by The Wandering Quinn
Are you on the hunt for the perfect beach in South Wales? Whether you're seeking a beach near Cardiff, sandy shores, prime surfing spots, or family-friendly coastlines, look no further! Discover the top 14 beaches in South Wales for walking, surfing, and family fun...
A CHEAP Stay In Cardiff Bay - Future Inn Hotel PLUS We Try Miller & Carter
13th February 2024 by Fly Drive Explore
Cheap but is it any good? We try the Future Inns and spend a night in Cardiff Bay at the Future Inn Cardiff Hotel. The Future Inn hotel is about a 10 minute walk from Mermaid Quay and there is free parking on site. We stayed for on a Sunday night in February. After walking around Cardiff Bay we had dinner in the Miller & Carter Steakhouse which is next to the hotel...
The five best things to do on a weekend away in Cardiff
13th February 2024 by Globalmouse Travels
Planning a weekend escape to the vibrant Welsh capital? Look no further than Cardiff, a city brimming with character, delightful streets, and warm-hearted locals. With excellent train connections and a plethora of attractions, Cardiff offers a wealth of options for a memorable getaway. But with limited time, how do you make the most of your visit? Join us as we explore the top five must-see and must-do experiences in Cardiff. Get ready to immerse yourself in the charm of this captivating city....
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