Antrim County Weather in January

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

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Belfast Portrush Bushmills Cushendall

Are you planning a trip a to Antrim County, the United Kingdom in January and wondering what kind of weather to expect? This page has all the details you need.

What to Expect in Antrim County in January

Antrim County, the United Kingdom is a region in the United Kingdom. January in Antrim County generally has cold temperatures, with precipitation levels ranging from moderate to high. The month of January is in 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 Belfast. On average, January is the coldest month of the year in Antrim County, the United Kingdom. So be prepared and make sure to pack winter cloths.

To explore the conditions in Antrim County, the United Kingdom in more detail, check the map below.

Precipitation

In January, precipitation varies across different areas. From moderate rainfall in Aghalee with an average of 77 mm (3 in) to high rainfall in Ballintoy with 134 mm (5.3 in).

Average sunshine

Sunshine tends to be more scarce in many locations. Belfast gets roughly 45 hours of sunlight. For sunnier alternatives, check our weather planner to find destinations with better conditions.

Explore Antrim County by month

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

January9°C (48°F) February9°C (48°F) March10°C (50°F) April12°C (54°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 Antrim County →

Best Places to Visit in Antrim County in January

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

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

Temperature range in Antrim County (January)

Precipitation variation in Antrim County (January)

Belfast

In January Belfast 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.

« December
January
February »
December
January
February
Max temperature
9°C (48°F)
9°C (48°F)
9°C (48°F)
Min temperature
4°C (39°F)
4°C (39°F)
4°C (39°F)
Monthly sun hours
39 hours
45 hours
67 hours
Monthly rainfall
95 mm (3.7 in)
89 mm (3.5 in)
81 mm (3.2 in)
Monthly rainy days
20 days
20 days
16 days
Weather conditions
poor
poor
poor
Climate in Belfast →

Portrush

In January Portrush generally has low temperatures with maximum daytime temperatures around 9°C (48°F), minimum nighttime temperatures around 5°C (41°F) and high monthly rainfall. So on average the conditions are poor that month.

« December
January
February »
December
January
February
Max temperature
10°C (50°F)
9°C (48°F)
9°C (48°F)
Min temperature
6°C (43°F)
5°C (41°F)
5°C (41°F)
Monthly sun hours
39 hours
50 hours
74 hours
Monthly rainfall
148 mm (5.8 in)
127 mm (5 in)
116 mm (4.6 in)
Monthly rainy days
22 days
22 days
17 days
Weather conditions
poor
poor
poor
Climate in Portrush →

Bushmills

In January Bushmills generally has low temperatures with maximum daytime temperatures around 9°C (48°F), minimum nighttime temperatures around 5°C (41°F) and high monthly rainfall. So on average the conditions are poor that month.

« December
January
February »
December
January
February
Max temperature
10°C (50°F)
9°C (48°F)
9°C (48°F)
Min temperature
6°C (43°F)
5°C (41°F)
5°C (41°F)
Monthly sun hours
39 hours
50 hours
74 hours
Monthly rainfall
149 mm (5.9 in)
127 mm (5 in)
114 mm (4.5 in)
Monthly rainy days
22 days
22 days
17 days
Weather conditions
poor
poor
poor
Climate in Bushmills →

Cushendall

In January Cushendall 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.

« December
January
February »
December
January
February
Max temperature
10°C (50°F)
9°C (48°F)
9°C (48°F)
Min temperature
5°C (41°F)
4°C (39°F)
4°C (39°F)
Monthly sun hours
39 hours
45 hours
67 hours
Monthly rainfall
120 mm (4.7 in)
108 mm (4.3 in)
98 mm (3.9 in)
Monthly rainy days
22 days
22 days
17 days
Weather conditions
poor
poor
poor
Climate in Cushendall →

Ballycastle

In January Ballycastle generally has low temperatures with maximum daytime temperatures around 9°C (48°F), minimum nighttime temperatures around 5°C (41°F) and high monthly rainfall. So on average the conditions are poor that month.

« December
January
February »
December
January
February
Max temperature
10°C (50°F)
9°C (48°F)
9°C (48°F)
Min temperature
6°C (43°F)
5°C (41°F)
5°C (41°F)
Monthly sun hours
39 hours
45 hours
67 hours
Monthly rainfall
153 mm (6 in)
130 mm (5.1 in)
116 mm (4.6 in)
Monthly rainy days
22 days
22 days
17 days
Weather conditions
poor
poor
poor
Climate in Ballycastle →

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

In our records: the United Kingdom January extremes

Notable January 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.

  • Based on our data, the coldest January night in the United Kingdom dropped to -20°C (-4°F) in Birmingham on January 14, 1982.

Popular cities in January

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

City Weather Day temp Night temp Rainfall
Belfast 9°C (48°F) 4°C (39°F) 89 mm (3.5 in)
Portrush 9°C (48°F) 5°C (41°F) 127 mm (5 in)
Bushmills 9°C (48°F) 5°C (41°F) 127 mm (5 in)
Cushendall 9°C (48°F) 4°C (39°F) 108 mm (4.3 in)
Ballycastle 9°C (48°F) 5°C (41°F) 130 mm (5.1 in)
Ballymoney 9°C (48°F) 4°C (39°F) 105 mm (4.1 in)

Antrim County weather in January: frequently asked questions

What is the weather like in Antrim County, the United Kingdom in January?

Expect poor weather across Antrim County, the United Kingdom in January. The popular destination of Belfast averages 9°C (48°F) by day and 4°C (39°F) at night during this winter month.

What is the average temperature in Antrim County, the United Kingdom in January?

Belfast averages a daytime maximum of 9°C (48°F) in January, with overnight lows close to 4°C (39°F).

Does Antrim County, the United Kingdom get a lot of rain in January?

Rain is generally moderate to light in Antrim County, the United Kingdom during January, with Belfast averaging close to 89 mm (3.5 in).

Is January a Good Time to Visit Antrim County, the United Kingdom?

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

Generally speaking, the best visiting conditions can be found in July and August offering mostly pleasant weather in Belfast. In contrast, January, February, March and December tend to have poor weather conditions.

Interested in more climate information?

We have much more information about the climate in Antrim 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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