County Antrim Weather in December

Average temperatures, rainfall, sunshine and the best places to visit in County Antrim, Ireland in December.

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Lisburn Belfast

Planning a trip to County Antrim, Ireland this December? Here's what you need to know about the weather:

What to Expect in County Antrim in December

County Antrim, Ireland is a region in Ireland. December in County Antrim generally has cold temperatures, with moderate precipitation. December falls during the winter season.

Temperatures

You can expect cold maximum daytime temperatures of around 9°C (48°F) and nighttime temperatures around 4°C (39°F) in Lisburn.

To learn more about the conditions in specific areas of County Antrim, Ireland, check out the map below.

Precipitation

In December, precipitation varies across different areas. From moderate rainfall in Belfast with an average of 83 mm (3.3 in) to moderate rainfall in Lisburn with 88 mm (3.5 in).

Average sunshine

Sunshine is more limited in many areas during this month. Lisburn receives about 39 hours of sunlight. For sunnier weather, check our weather planner to find destinations with better conditions.

Explore County Antrim by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Best Places to Visit in County Antrim in December

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

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 County Antrim

What is the weather like in December for some of the most popular destinations in County Antrim, Ireland?

Temperature range in County Antrim (December)

Precipitation variation in County Antrim (December)

Lisburn

In December Lisburn generally has low temperatures with maximum daytime temperatures around 9°C (48°F), minimum nighttime temperatures around 4°C (39°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
6°C (43°F)
4°C (39°F)
4°C (39°F)
Monthly sun hours
59 hours
39 hours
45 hours
Monthly rainfall
91 mm (3.6 in)
88 mm (3.5 in)
83 mm (3.3 in)
Monthly rainy days
19 days
20 days
21 days
Weather conditions
unpleasant
poor
poor
Climate in Lisburn →

Belfast

In December Belfast 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
59 hours
39 hours
45 hours
Monthly rainfall
85 mm (3.3 in)
83 mm (3.3 in)
80 mm (3.1 in)
Monthly rainy days
20 days
21 days
22 days
Weather conditions
unpleasant
poor
poor
Climate in Belfast →

Is your destination not in the list? Have a look at all destinations in County Antrim, in Ireland.

In our records: Ireland December extremes

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

  • Based on our data, the coldest December night in Ireland dropped to -16°C (3°F) in Donegal on December 23, 2010.
  • In our records, the coldest December daytime high in Ireland was -7°C (19°F) in Lurgan on December 21, 2010.

Popular cities in December

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

City Weather Day temp Night temp Rainfall
Lisburn 9°C (48°F) 4°C (39°F) 88 mm (3.5 in)
Belfast 9°C (48°F) 3°C (37°F) 83 mm (3.3 in)

County Antrim weather in December: frequently asked questions

What is the weather like in County Antrim, Ireland in December?

County Antrim, Ireland typically experiences poor weather in December, part of the winter season. Daytime highs in Lisburn average around 9°C (48°F), and temperatures drop to about 4°C (39°F) at night.

What is the average temperature in County Antrim, Ireland in December?

In Lisburn, the average daytime high in December is 9°C (48°F), while nighttime temperatures drop to around 4°C (39°F).

Does County Antrim, Ireland get a lot of rain in December?

Rain is generally moderate to light in County Antrim, Ireland during December, with Lisburn averaging close to 88 mm (3.5 in).

Is December a Good Time to Visit County Antrim, Ireland?

Given the typically poor weather conditions in Lisburn, December may not be the ideal time to visit County Antrim, Ireland.

Generally speaking, June, July and August provide pleasant weather in Lisburn. On the other hand, the weather in January, February and December tend to be poor.

Interested in more climate information?

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

Weather and climate has detailed information for every country in the world. Are you going to Ireland? Get detailed historical weather averages for many cities in Ireland.

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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