Swansea Weather in December

Swansea in December sees low daytime temperatures of 10°C (50°F) and nighttime lows of 5°C (41°F). With the highest rainfall of the year it is wise to pack an umbrella and expect frequent showers.

Rainfall in Swansea in December

Given that this is the rainiest month, it's wise to carry an umbrella to stay dry during unexpected showers. Based on our climate data of the past 30 years, about 20 days of rain are anticipated, with 146 mm (5.7 in) on average. 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 Swansea in December

Expect highs of 10°C (50°F) in Swansea in December, with nights dropping to around 5°C (41°F). December marks the winter season. Temperatures remain on the cold side all day. A proper warm jacket is worth having, not just for evenings. With lows around 5°C (41°F), nights are cold. The upside is that cool, crisp nights are often the best for a deep sleep.

Sunshine in Swansea in December

The month has fewer sunny days, with around 49 hours of sunshine.

If you prefer dry days with pleasant temperatures, December may not be the ideal month to visit Swansea. 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
• 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 Swansea's climate page.

Swansea Temperature in December

Min Temperature 5°C (41°F)  

Max Temperature 10°C (50°F)  

Chance of Rain 66%  

Precipitation 146 mm (5.7 in)  

Rainy days 20 days  

Humidity 89% *  

Sunshine 49 hours *  

Percentage Sunshine 19% *  

* Data from: Cardiff, the United Kingdom (48 KM, 29 Miles).

What to Wear in Swansea 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. You can probably leave your sunglasses at home, because sunny days are pretty rare this month.

What To Do in Swansea 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 Swansea's climate page.

More climate data for Swansea

Temperature Rainfall Sunshine Humidity

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