Wales in December: weather & travel tips

December in Wales has a rugged, wintry charm. The mountains might see a sprinkle of snow, while the valleys take on a quiet, misty atmosphere. On upland farms, life continues as it has for centuries, with shepherds keeping a close watch over their flocks. The weather in Wales in December is brisk, often cold and wet, but it adds to the feeling of the season. After a brisk walk through the countryside or along the coast, there's something deeply satisfying about stepping into a cozy pub or exploring a festive market.

December in Wales at a glance

• Temperatures average at about 37°F to 46°F (3°C to 8°C) with sub-zero temperatures and snow likely in mountain areas.
• Around 7–8 hours of daylight hours, with sunset as early as 4 PM.
• About 15 rainy days per month, often mixed with sleet in higher elevations.
• Frost is common, especially inland and during early mornings.
• Winter landscapes and festive charm in towns and cities make up for the challenging outdoor conditions.

Is December a good time to visit Wales?

In December, you can expect classic British winter weather in Wales—cool, wet, and often cloudy. Rain is frequent, and if you're heading to the mountains, like Snowdonia, you might even see some snow. On average, about 140mm of rain falls over 15-20 days during the month, making it one of the wettest times of the year.

Short daylight hours, chilly temperatures, and frequent rain mean it's not ideal for all outdoor adventures. But if you're after a festive, cozy atmosphere in Welsh towns or cities, December can still be a fun time to visit.

Average daily temperatures in December

In December, temperatures usually range from 37°F to 46°F (3°C to 8°C). Daytime highs hover around 45°F (7°C), but it can drop close to freezing at night, especially inland or in the mountains. The sea is also cold, around 50°F (10°C), so unless you're a cold-water swimming enthusiast with the right gear, you'll probably want to avoid a dip.

With only about 8 hours of daylight—sunrise around 8:00 AM and sunset by 4:00 PM—the days feel short and a bit compressed. The longer evenings can be great for sitting by the fire.

December weather can be a bit challenging, with plenty of grey days, rain, and even snow at higher altitudes. But if you're up for some careful planning and have good waterproof gear, you can still enjoy activities like hiking or coastal walks.

What about the crowd and cost?

December is generally part of Wales's low season, so you're likely to find fantastic deals—accommodation prices can be 30-40% lower than in summer. Attractions are quieter, giving you more room to explore. However, note that the week between Christmas and New Year is an exception. Domestic tourists flock to celebrate the holidays, and prices rise accordingly.

If you're after the winter charm without holiday crowds, January and February are even quieter. For better weather and similar pricing, consider May or September. And if you want the best weather, summer is the time to go—just expect higher costs and bigger crowds. Not convinced this is the month for you? See our guide to the best time to visit Wales.

Things to do in Wales in December

Here's a quick list of a few things you could do during your trip, for the complete list, see our guide to the best things to do in Wales.

Winter surfing at Rest Bay, Porthcawl

If you love a challenge, winter surfing at Rest Bay is a must-try. December delivers consistent, powerful swells that are perfect for seasoned surfers. The water may hover around 10°C, but modern wetsuits make it manageable. Rest Bay is quieter this time of year, so you'll have more waves to yourself. Local surf shops offer rentals and winter-specific lessons if you're new to it. Be sure to bring a thermos of something hot, and always check tide times.

Bodnant Garden's Winter Illumination Trail

Step into a glowing wonderland at Bodnant Garden's Winter Illumination Trail. This after-dark event transforms the Victorian garden into a magical spectacle with lights highlighting features like the iconic Laburnum Arch and Pin Mill. With December's early sunsets, it's the perfect evening outing. The trail takes around 90 minutes, so wear sturdy, waterproof shoes—it can get muddy!

Visit Cardiff's Winter Wonderland and ice rink

For a festive day out, Cardiff's Winter Wonderland has it all. From ice skating and rides to mulled wine and Welsh street food, it's a December favorite. The ice rink is the star, so book your skating session ahead of time, especially if you're going on a weekend. If crowds aren't your thing, weekday afternoons are quieter. The Alpine Village is free to wander, though rides use tokens, which you can grab on-site. It's an ideal spot for festive vibes, Christmas treats, and fun for all ages.

Glass blowing at Bristol Blue Glass in Cardiff

Want to try something different this winter? Head to Bristol Blue Glass in Cardiff for a warm and fascinating indoor experience. Watch master glassblowers in action or sign up for a workshop to create your own piece. Workshops are popular in December, so plan to book at least two weeks in advance. Your creation needs 24 hours to cool, so schedule a pick-up or arrange shipping. It's a cozy way to spend a winter day.

Festivals and events in Wales in December

Here is a round up of some of our favorite events and festivals that compliment the weather in Wales in December:

• Victorian Christmas Fair at St Fagans National Museum: Discover festive cheer in 19th-century style as the museum's historic buildings are decked out for Christmas. Enjoy carol singing, Welsh treats like bara brith, and Victorian toy-making demos. Browse handmade gifts, meet a Victorian Father Christmas, and watch craftspeople bring old traditions to life.
• Portmeirion Craft and Food Fair: The Italianate village of Portmeirion hosts this festive event with stalls selling handmade pottery, jewelry, and seasonal decorations. Sample local cheeses, wines, and Welsh cakes as you wander the twinkling streets.
• Llandudno Christmas Fayre: Llandudno's streets come alive with over 150 stalls offering Welsh crafts, international treats, and local delicacies. Enjoy live entertainment from choirs, brass bands, and street performers while kids visit Santa's grotto or ride traditional fairground attractions. This seaside market has everything for a festive family day out.
• Caerphilly Medieval Christmas Market: Set in the shadow of Caerphilly Castle, this market combines medieval flair with festive fun. Traders in costume sell crafts, food, and mulled wine while reenactors, minstrels, and falconers create an immersive experience. The castle, adorned with lights and decorations, adds to the atmosphere.

Plan your trip with our Wales itineraries

December in Wales is all about festive charm, but it also comes with its own quirks. Shorter days and holiday schedules mean careful planning is a must. Our Wales itineraries help you balance outdoor exploration with seasonal events and cozy indoor options, making sure that you don't miss out on the best of winter in Wales. Or see our trip idea gallery for even more ideas.