Swansea weather

Our guide to the weather in Swansea during December

9

Average high

2

UV Index

164mm

Monthly rainfall

83%

Humidity

We've looked at the most up-to-date weather data for Swansea, covering the last 12 years up to 2024, plus we've asked our team of travel bloggers for their first-hand experiences in order to answer the most frequently asked questions about Swansea weather in December.

What's the temperature like in Swansea during December?

The temperature is extremely stable in December with average highs of 9℃ and lows just 3℃ lower at 6℃. The UV index will be low at this time of year, so not something to worry about. However, if you're going to be outside for long periods it's always a good idea to apply a small amount of sunscreen to exposed skin.

Does it snow in Swansea during December?

Possibly. There's a chance of snow during December but not as much as you might think. Check the local forecast before you leave home so that you can pack appropriate footwear and clothing.

Does it rain in Swansea during December?

On average, there will be 11 rainy days during the month, amounting to 164.1mm in total. That's a significant amount of rain. For comparison, the wettest months in the UK typically sees between 80mm and 100mm, depending on where you are. There's a small chance that you'll catch a thunderstorm during your trip.

Is it windy in Swansea during December?

Expect moderate breeze becoming stronger at times during December, with occasional gusts up to 24mph. With cool air temperatures, any breeze will feel cold.

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Swansea Blog posts

From the UK's most popular travel bloggers

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Swansea Bay Weekend Itinerary

12th April 2024 by Coco Butter Blog

Nestled on the southern coast of Wales, Swansea Bay boasts breathtaking green countryside, picturesque coastline, and a plethora of top-notch restaurants offering delectable dishes. This charming destination is ideal for a weekend escape, with its dog-friendly atmosphere, extensive walking trails, and numerous pet-friendly establishments....

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How to visit Brombil Reservoir in Port Talbot & things to do

19th August 2020 by The Wandering Quinn

Port Talbot isn’t famous for many things if we’re being honest. It’s somewhere I have driven past on the M4 for many many years and I’ve never felt the need to stop there, but that all changed when I started to see photos of Brombil Reservoir on Instagram! Brombil Reservoir is a great place to visit on a hot day to cool down in its incredible bright water. The reservoir edge is good for children to play on too making it a great place to take children....

Weather in Swansea

Our month-by-month guide to the weather and climate in Swansea

7.8

Swansea weather in

January
8.0

Swansea weather in

February
9.6

Swansea weather in

March
11.7

Swansea weather in

April
13.9

Swansea weather in

May
16.6

Swansea weather in

June
18.3

Swansea weather in

July
18.2

Swansea weather in

August
16.9

Swansea weather in

September
14.4

Swansea weather in

October
11.1

Swansea weather in

November
9.0

Swansea weather in

December