Cardiff weather in December (Wales, United Kingdom)

Thinking of visiting Cardiff in December? Check the weather first! See what weather conditions to anticipate this month with our guide.

Temperatures

The month of December in Cardiff typically brings low temperatures and high rainfall. During December, you’ll experience the winter season. Throughout the daytime, temperatures often hover around 10°C. However, as the sun sets and evening approaches, there's a noticeable cool-down. Temperatures gently drop to a more temperate 5°C.

Precipitation

Cardiff in December usually receives high rainfall, averaging around 119 mm for the month. Expect frequent showers this month, so make sure to have an umbrella to keep yourself dry. Looking at the last 30 years, the data shows about 19 days with rain.

Average sunshine

With limited sunshine this month, there are about 49 hours of sun. It's ideal for those who prefer a cooler, cloudier climate.

If you're looking for dry conditions and comfortable temperatures, December may not be the ideal month to visit Cardiff. July and August typically offer the best circumstances. While January, February, November and December tend to showcase less optimal conditions.

For an in-depth look at the yearly conditions, visit our specialized Cardiff climate page with graphs.

 

Cardiff, monthly averages in December

Min Temperature 5°C  

Max Temperature 10°C  

Water Temperature 10°C  

Chance of Rain 65%  

Precipitation 119 mm  

Rainy days 19 days  

Humidity 89%  

Windspeed 18 km/h  

Sunshine 49 hours  

Percentage Sunshine 19%  

Where to go in the United Kingdom in December

Find out more about the weather in the United Kingdom and which places have the best travel conditions in this month.

Weather conditions Weather

Temperatures

Precipitation

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Legend perfect weather pleasant tolerable unpleasant poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in this month?

Wear a base layer in cold weather; this is the #1 thing you can do to increase your overall body temperature. With a water temperature of around 10°C there is no need to bring your swimwear.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

4/10

Cycling

4/10

Walking

4/10

Camping

3/10

Outdoor sports

4/10

Interested in more climate information?

This site provides you with all the information you need about the climate in Cardiff.

Our site offers climate and forecast data for every country in the world. Are you going to the United Kingdom? On this website you can find historical weather averages for many cities in the United Kingdom. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.