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Weather in December
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Weather in December in Glamorgan

Are you planning a trip a to Glamorgan in December and wondering what kind of weather to expect? This page has all the details you need.

What is the weather like in Glamorgan in December?

Glamorgan is a region in the United Kingdom. December in Glamorgan generally has cold temperatures, with high precipitation. During December, winter is in full swing.

Temperatures

The average maximum temperatures are cold and range from 8°C in Merthyr Tydfil to 10°C in Llangennith. Nighttime temperatures generally drop to 6°C in Llangennith and 2°C in Merthyr Tydfil.

Precipitation

In December, precipitation varies across different areas. From high rainfall in Penarth with an average of 107 mm to high rainfall in Llangennith with 159 mm. Cardiff experiences its highest rainfall in this month of the year. Come prepared by bringing an umbrella.

Average sunshine

Cardiff experiences limited sunny days, amounting to roughly 49 hours of sunshine. This makes it perfect for those who prefer dimmer, cloudier settings rather than intense sunlit days

For a closer look at December's conditions in Glamorgan, see the map below. For a more detailed look at Glamorgan's yearly weather, check out our Glamorgan climate page.

Where to go in Glamorgan in December

Find more information for the most popular destinations in the Glamorgan on the map below. Click on a destination dot for more detailes.

Weather conditions Weather
Temperatures
Precipitation
Map not visible? Whoops sorry! Please refresh the page.
Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

Popular destinations

What is the weather like in December for the 5 most popular destinations in Glamorgan?

Cardiff

In December Cardiff generally has low temperatures with maximum daytime temperatures around 10°C, minimum nighttime temperatures around 5°C and high monthly rainfall. So on average the conditions are poor that month.

Cardiff
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   November November
<<  
12°C 
7°C 
66 hours 
117 mm 
19 days 
poor 
December December
10°C 
5°C 
49 hours 
119 mm 
19 days 
poor 
January   >> January
>>  
9°C 
4°C 
53 hours 
105 mm 
20 days 
poor 
Climate in Cardiff

Merthyr Tydfil

In December Merthyr Tydfil generally has low temperatures with maximum daytime temperatures around 8°C, minimum nighttime temperatures around 2°C and high monthly rainfall. So on average the conditions are poor that month.

Merthyr Tydfil
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   November November
<<  
11°C 
4°C 
66 hours 
115 mm 
20 days 
poor 
December December
8°C 
2°C 
49 hours 
122 mm 
20 days 
poor 
January   >> January
>>  
8°C 
2°C 
53 hours 
114 mm 
21 days 
poor 
Climate in Merthyr Tydfil

Bridgend

In December Bridgend generally has low temperatures with maximum daytime temperatures around 10°C, minimum nighttime temperatures around 5°C and high monthly rainfall. So on average the conditions are poor that month.

Bridgend
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   November November
<<  
12°C 
7°C 
66 hours 
124 mm 
20 days 
poor 
December December
10°C 
5°C 
49 hours 
130 mm 
20 days 
poor 
January   >> January
>>  
9°C 
4°C 
53 hours 
117 mm 
21 days 
poor 
Climate in Bridgend

The Mumbles

In December The Mumbles generally has low temperatures with maximum daytime temperatures around 10°C, minimum nighttime temperatures around 5°C and high monthly rainfall. So on average the conditions are poor that month.

The Mumbles
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   November November
<<  
12°C 
8°C 
66 hours 
147 mm 
20 days 
poor 
December December
10°C 
5°C 
49 hours 
150 mm 
20 days 
poor 
January   >> January
>>  
9°C 
5°C 
53 hours 
135 mm 
20 days 
poor 
Climate in The Mumbles

Barry

In December Barry generally has low temperatures with maximum daytime temperatures around 10°C, minimum nighttime temperatures around 5°C and high monthly rainfall. So on average the conditions are poor that month.

Barry
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   November November
<<  
12°C 
7°C 
66 hours 
113 mm 
18 days 
poor 
December December
10°C 
5°C 
49 hours 
115 mm 
19 days 
poor 
January   >> January
>>  
9°C 
4°C 
53 hours 
102 mm 
20 days 
poor 
Climate in Barry

Is your destination not in the list? Have a look at other destinations in Glamorgan, in the United Kingdom.

Is December the best time to visit Glamorgan?

Given the typically poor weather conditions in Cardiff, December may not be the ideal time to visit Glamorgan.

Generally speaking, the best visiting conditions can be found in July and August offering mostly perfect weather in Cardiff. On the other hand, the months of January, February, November and December tend to have poor weather conditions.

Interested in more climate information?

We have much more information about the climate in Glamorgan. Interested in the weather conditions in a specific month? Select the month below.

  • January      
  • February      
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  • April      
  • May      
  • June      
  • July      
  • August      
  • September      
  • October      
  • November      
  • December      

    • Weather and climate has detailed information for every country in the world. Are you going to the United Kingdom? Get detailed 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.