Cardiff weather in December (Wales, United Kingdom)
Thinking of visiting Cardiff, the United Kingdom in December? Check the weather first! Find out what weather conditions to expect with our monthly guide.
Temperatures
The monthly weather conditions in Cardiff for December typically bring 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. This month is known for heavy rainfall, so don't forget your umbrella to stay dry. Looking at the last 30 years, the data shows about 19 days with rain.
Average sunshine
This month is characterized by fewer sunny days, with about 49 hours of sunshine. It's great for those who appreciate cooler, less sunny days.
Average windspeed
Average wind conditions reach 5 m/s in December. This creates lively weather with fresh winds that make small trees sway noticeably. Remember this is an average: some days are less windy while others have particularly active windy conditions.
Average water temperature in December
The water temperature sits at a bone-chilling 10°C, making swimming virtually impossible for most visitors.If you're looking for dry conditions and comfortable temperatures, December may not be the ideal month to visit Cardiff. Our weather planner can help you explore destinations with more pleasant weather conditions.
Select a Month of Interest
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United Kingdom, check out our Cardiff's climate page.
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
5 m/s
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.
perfect weather
pleasant
tolerable
unpleasant
poor
Select a Month of Interest
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United Kingdom, check out our Cardiff's climate page.
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.
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.
