Llantrisant Weather in December

During December, Llantrisant experiences low daytime temperatures of 9°C (48°F) and cooler nights around 4°C (39°F). As the wettest month of the year, and part of the winter season, expect frequent rainfall.

Rainfall in Llantrisant in December

With the most rainfall occurring this month, it's practical to keep an umbrella handy for sudden downpours. This month experiences about 20 days of rain according to historical data, averaging 120 mm (4.7 in). Wet weather is a regular and significant part of this month. Frequent days of rain combined with high totals means proper waterproofs are worth packing.

Temperature in Llantrisant in December

In December, Llantrisant gets low temperatures, with highs of 9°C (48°F). Nights cool to around 4°C (39°F). The winter season is characteristic of December. Cold conditions persist throughout the day, so warm clothing is important from the moment you head outside. Nights fall to 4°C (39°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.

Sunshine in Llantrisant in December

The month is characterized by fewer sunny days, with roughly 49 hours hours of sunshine. Ideal for those who prefer a cooler, cloudier climate.

Wind Speed in Llantrisant in December

Wind speeds average 5 m/s (10 knots) during December. At this speed, gentle to moderate breezes make small trees sway and the wind creates whitecaps on water bodies. Daily variations range from moderate winds to stronger breezes, creating excellent conditions for sailing, kite flying and wind sports.

Average water temperature in December

At 10°C (50°F), the water is very cold. Most people find it too uncomfortable for anything beyond a brief wade.

If you prefer dry days with pleasant temperatures, December may not be the ideal month to visit Llantrisant. Our weather planner can help you explore destinations with more pleasant weather conditions.

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• January
• February
• March
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• May
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• December

For a detailed overview over the year and the best time to visit the United Kingdom, check out our Llantrisant's climate page.

Llantrisant Temperature in December

Min Temperature 4°C (39°F)  

Max Temperature 9°C (48°F)  

Water Temperature 10°C (50°F) *  

Chance of Rain 66%  

Precipitation 120 mm (4.7 in)  

Rainy days 20 days  

Humidity 89% *  

Windspeed 5 m/s (10 knots) *  

Sunshine 49 hours *  

Percentage Sunshine 19% *  

* Data from: Cardiff, the United Kingdom (15 KM, 9 Miles).

What to Wear in Llantrisant in December

Dress warmly and in layers for your trip to Llantrisant in December. A good base layer system works wonders. Start with good thermal underwear, add something warm like a fleece sweater, then finish with a waterproof jacket on top. Expect heavy rainfall, so bring good rain protection and waterproof bags. With water temperatures around 10°C (50°F), the water is quite cold for swimming. You can skip the swimwear unless you're particularly tough. Sunglasses aren't essential this month, though you might want them for the occasional bright moment.

What To Do in Llantrisant in December

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

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United Kingdom, check out our Llantrisant's climate page.

More climate data for Llantrisant

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

See the full Llantrisant climate overview or explore weather in the United Kingdom.