Llandeilo Weather in December

Thinking of visiting Llandeilo in December? Expect low temperatures reaching 9°C (48°F) during the day, dropping to 3°C (37°F) at night, and be prepared for the wettest month of the year.

Rainfall in Llandeilo in December

As the rainiest month, carrying an umbrella is advisable to manage the frequent rain. You can typically expect 20 days of rain this month, averaging around 142 mm (5.6 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 Llandeilo in December

Daytime highs in Llandeilo in December reach 9°C (48°F), with nights around 3°C (37°F). The winter season is characteristic of December. It stays cool throughout the day, so warm layers are a good idea from morning to evening. With overnight lows of 3°C (37°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.

Sunshine in Llandeilo in December

The city usually sees around 49 hours of sunlight, indicating fewer sunny days.

If you're looking for dry conditions and comfortable temperatures, December may not be the ideal month to visit Llandeilo. Our weather planner can help you explore destinations with more pleasant weather conditions.

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
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• July
• August

• September
• October
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• December

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

Llandeilo Temperature in December

Min Temperature 3°C (37°F)  

Max Temperature 9°C (48°F)  

Chance of Rain 67%  

Precipitation 142 mm (5.6 in)  

Rainy days 20 days  

Humidity 89% *  

Sunshine 49 hours *  

Percentage Sunshine 19% *  

* Data from: Cardiff, the United Kingdom (69 KM, 43 Miles).

What to Wear in Llandeilo in December

Cold weather calls for smart layering in December. A thermal base layer makes a huge difference in staying warm. Add a wool sweater or fleece, then a wind-resistant outer jacket. Prepare for significant rainfall with proper waterproof clothing and shoes. Sunglasses aren't essential this month, though you might want them for the occasional bright moment.

What To Do in Llandeilo 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 Llandeilo's climate page.

More climate data for Llandeilo

Temperature Rainfall Sunshine Humidity

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