Londonderry County Weather in December

Average temperatures, rainfall, sunshine and the best places to visit in Londonderry County, the United Kingdom in December.

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Londonderry Portstewart Coleraine Dungiven

Considering a trip to Londonderry County, the United Kingdom this December and wondering about the expected weather conditions? Find all the crucial information you need right here, addressing your question:

What to Expect in Londonderry County in December

Londonderry County, the United Kingdom is a region in the United Kingdom. December in Londonderry County generally has cold temperatures, with precipitation levels ranging from moderate to high. During December, winter is in full swing.

Temperatures

You can expect cold maximum daytime temperatures of around 9°C (48°F) and nighttime temperatures around 3°C (37°F) in Londonderry.

For a closer look at conditions across Londonderry County, the United Kingdom, refer to the map below.

Precipitation

In December, precipitation varies across different areas. From moderate rainfall in Upperlands with an average of 94 mm (3.7 in) to high rainfall in Portstewart with 143 mm (5.6 in).

Average sunshine

Sunshine tends to be more scarce in many locations. Londonderry gets roughly 39 hours of sunlight. For sunnier alternatives, check our weather planner to find destinations with better conditions.

Explore Londonderry County by month

Pick a month to see the average temperature, rainfall and sunshine in Londonderry County — and find the best time to visit. (based on Londonderry)

January9°C (48°F) February9°C (48°F) March11°C (52°F) April13°C (55°F) May15°C (59°F) June17°C (63°F) This monthJuly19°C (66°F) August19°C (66°F) September17°C (63°F) October14°C (57°F) November11°C (52°F) December9°C (48°F)
Best Time to Visit Londonderry County →

Best Places to Visit in Londonderry County in December

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Londonderry County.

Conditions Temperatures Precipitation
perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

Popular Destinations in Londonderry County

What is the weather like in December for some of the most popular destinations in Londonderry County, the United Kingdom?

Temperature range in Londonderry County (December)

Precipitation variation in Londonderry County (December)

Londonderry

In December Londonderry generally has low temperatures with maximum daytime temperatures around 9°C (48°F), minimum nighttime temperatures around 3°C (37°F) and moderate monthly rainfall. So on average the conditions are poor that month.

« November
December
January »
November
December
January
Max temperature
11°C (52°F)
9°C (48°F)
9°C (48°F)
Min temperature
5°C (41°F)
3°C (37°F)
3°C (37°F)
Monthly sun hours
58 hours
39 hours
50 hours
Monthly rainfall
99 mm (3.9 in)
100 mm (3.9 in)
97 mm (3.8 in)
Monthly rainy days
23 days
23 days
23 days
Weather conditions
unpleasant
poor
poor
Climate in Londonderry →

Portstewart

In December Portstewart generally has low temperatures with maximum daytime temperatures around 10°C (50°F), minimum nighttime temperatures around 6°C (43°F) and high monthly rainfall. So on average the conditions are poor that month.

« November
December
January »
November
December
January
Max temperature
12°C (54°F)
10°C (50°F)
9°C (48°F)
Min temperature
8°C (46°F)
6°C (43°F)
5°C (41°F)
Monthly sun hours
58 hours
39 hours
50 hours
Monthly rainfall
145 mm (5.7 in)
143 mm (5.6 in)
124 mm (4.9 in)
Monthly rainy days
22 days
22 days
22 days
Weather conditions
poor
poor
poor
Climate in Portstewart →

Coleraine

In December Coleraine generally has low temperatures with maximum daytime temperatures around 10°C (50°F), minimum nighttime temperatures around 5°C (41°F) and high monthly rainfall. So on average the conditions are poor that month.

« November
December
January »
November
December
January
Max temperature
11°C (52°F)
10°C (50°F)
9°C (48°F)
Min temperature
7°C (45°F)
5°C (41°F)
5°C (41°F)
Monthly sun hours
58 hours
39 hours
50 hours
Monthly rainfall
134 mm (5.3 in)
132 mm (5.2 in)
116 mm (4.6 in)
Monthly rainy days
22 days
22 days
22 days
Weather conditions
poor
poor
poor
Climate in Coleraine →

Dungiven

In December Dungiven generally has low temperatures with maximum daytime temperatures around 9°C (48°F), minimum nighttime temperatures around 4°C (39°F) and high monthly rainfall. So on average the conditions are poor that month.

« November
December
January »
November
December
January
Max temperature
11°C (52°F)
9°C (48°F)
9°C (48°F)
Min temperature
5°C (41°F)
4°C (39°F)
3°C (37°F)
Monthly sun hours
58 hours
39 hours
50 hours
Monthly rainfall
104 mm (4.1 in)
103 mm (4.1 in)
97 mm (3.8 in)
Monthly rainy days
22 days
22 days
23 days
Weather conditions
poor
poor
poor
Climate in Dungiven →

Limavady

In December Limavady generally has low temperatures with maximum daytime temperatures around 9°C (48°F), minimum nighttime temperatures around 4°C (39°F) and high monthly rainfall. So on average the conditions are poor that month.

« November
December
January »
November
December
January
Max temperature
11°C (52°F)
9°C (48°F)
9°C (48°F)
Min temperature
6°C (43°F)
4°C (39°F)
4°C (39°F)
Monthly sun hours
58 hours
39 hours
50 hours
Monthly rainfall
118 mm (4.6 in)
117 mm (4.6 in)
107 mm (4.2 in)
Monthly rainy days
22 days
22 days
23 days
Weather conditions
poor
poor
poor
Climate in Limavady →

Is your destination not in the list? Have a look at all destinations in Londonderry County, in the United Kingdom.

In our records: the United Kingdom December extremes

Notable December records observed across cities in the United Kingdom in our climate database (1976 – 2026). Historic readings can vary in quality, so treat these as illustrative.

  • In our records, the coldest December daytime high in the United Kingdom was -10°C (14°F) in Glasgow on December 29, 1995.
  • From our sources, the wettest December day in the United Kingdom brought 301 mm (12 in) in Belfast on December 4, 1982.

Popular cities in December

Day & night temperatures, rainfall and average weather in Londonderry County in December.

City Weather Day temp Night temp Rainfall
Londonderry 9°C (48°F) 3°C (37°F) 100 mm (3.9 in)
Portstewart 10°C (50°F) 6°C (43°F) 143 mm (5.6 in)
Coleraine 10°C (50°F) 5°C (41°F) 132 mm (5.2 in)
Dungiven 9°C (48°F) 4°C (39°F) 103 mm (4.1 in)
Limavady 9°C (48°F) 4°C (39°F) 117 mm (4.6 in)
Aghadowey 9°C (48°F) 4°C (39°F) 107 mm (4.2 in)

Londonderry County weather in December: frequently asked questions

What is the weather like in Londonderry County, the United Kingdom in December?

December in Londonderry County, the United Kingdom brings poor weather. In Londonderry, daytime temperatures are typically around 9°C (48°F) and nighttime lows hover near 3°C (37°F).

What is the average temperature in Londonderry County, the United Kingdom in December?

Average temperatures in Londonderry County, the United Kingdom during December range from a nighttime low near 3°C (37°F) to a daytime high around 9°C (48°F) in Londonderry.

Does Londonderry County, the United Kingdom get a lot of rain in December?

December is on the drier side in Londonderry County, the United Kingdom. Londonderry averages only about 100 mm (3.9 in), with most days staying dry.

Is December a Good Time to Visit Londonderry County, the United Kingdom?

In our view, December might not be the best time to travel to Londonderry County, the United Kingdom with often poor weather in Londonderry.

Generally speaking, the best visiting conditions can be found in May, July, August, September and October offering mostly tolerable weather in Londonderry. On the other hand, the months of January, February and December tend to have poor weather conditions.

Interested in more climate information?

We have much more information about the climate in Londonderry County.

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.

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