ClimateForecastDecemberJanuary >>

Weather in December in Gwynedd

Thinking about venturing to Gwynedd this December and curious about the weather conditions to expect? This page holds all the key information you seek, responding to your question:

What is the weather like in Gwynedd in December?

Gwynedd is a region in the United Kingdom. December in Gwynedd generally has cold temperatures, with precipitation levels ranging from high to heavy. December falls during the winter season.

Temperatures

The average maximum temperatures are cold and range from 8°C in Llandderfel to 11°C in Aberdaron. Nighttime temperatures generally drop to 7°C in Aberdaron and 2°C in Llandderfel.

Precipitation

In December, precipitation varies across different areas. From high rainfall in Colwyn Bay with an average of 103 mm to heavy rainfall in Pistyll with 202 mm. Based on our climate, it is the month with the most precipitation throughout the year in Llandudno.

Average sunshine

The city Llandudno usually sees around 26 hours of sunlight, indicating fewer sunny days.

For specific regional insights in Gwynedd for December, refer to the map provided below. For an in-depth overview of the yearly weather conditions, do visit our Gwynedd climate page.

Where to go in Gwynedd in December

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

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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 Gwynedd?

Llandudno

In December Llandudno generally has low temperatures with maximum daytime temperatures around 9°C, minimum nighttime temperatures around 4°C and high monthly rainfall. So on average the conditions are poor that month.

Llandudno
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
11°C 
6°C 
42 hours 
109 mm 
20 days 
poor 
9°C 
4°C 
26 hours 
111 mm 
21 days 
poor 
January   >> January
>>  
9°C 
4°C 
33 hours 
92 mm 
21 days 
poor 
Climate in Llandudno

Betws-y-coed

In December Betws-y-coed generally has low temperatures with maximum daytime temperatures around 8°C, minimum nighttime temperatures around 3°C and high monthly rainfall. So on average the conditions are poor that month.

Betws-y-coed
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
10°C 
5°C 
42 hours 
117 mm 
21 days 
poor 
8°C 
3°C 
26 hours 
124 mm 
21 days 
poor 
January   >> January
>>  
8°C 
2°C 
33 hours 
110 mm 
22 days 
poor 
Climate in Betws-y-coed

Criccieth

In December Criccieth generally has low temperatures with maximum daytime temperatures around 9°C, minimum nighttime temperatures around 5°C and heavy monthly rainfall. So on average the conditions are poor that month.

Criccieth
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
11°C 
7°C 
42 hours 
177 mm 
21 days 
poor 
9°C 
5°C 
26 hours 
181 mm 
21 days 
poor 
January   >> January
>>  
9°C 
4°C 
33 hours 
157 mm 
21 days 
poor 
Climate in Criccieth

Conwy

In December Conwy generally has low temperatures with maximum daytime temperatures around 9°C, minimum nighttime temperatures around 4°C and high monthly rainfall. So on average the conditions are poor that month.

Conwy
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
11°C 
6°C 
42 hours 
104 mm 
20 days 
poor 
9°C 
4°C 
26 hours 
107 mm 
21 days 
poor 
January   >> January
>>  
9°C 
3°C 
33 hours 
91 mm 
21 days 
poor 
Climate in Conwy

Dolgellau

In December Dolgellau generally has low temperatures with maximum daytime temperatures around 8°C, minimum nighttime temperatures around 3°C and high monthly rainfall. So on average the conditions are poor that month.

Dolgellau
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
11°C 
5°C 
42 hours 
138 mm 
21 days 
poor 
8°C 
3°C 
26 hours 
151 mm 
21 days 
poor 
January   >> January
>>  
8°C 
3°C 
33 hours 
134 mm 
22 days 
poor 
Climate in Dolgellau

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

Is December the best time to visit Gwynedd?

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

On average, the best time to visit Gwynedd is in July with generally perfect weather in Llandudno. On the other hand, the weather in January, February, March, November and December tend to be poor.

Interested in more climate information?

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

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