If you plan to visit Belfast in January, the weather is typically alright, with an average high temperature of +8°C during the day and approximately 2 sunny days. Expect some rainy, though, as there are typically 9 rainy days in the month and around 75 mm of precipitation. The weather is changeable so you may have to pack for every eventuality. Search flightsin one click on Avionero.
Good to know:
January is usually the coldest month of the year in Belfast;
Average weather
☀️
+8°C
Avg. max. temperature
-9°C
Min.
+15°C
Max.
75 mm
Total precipitation
85%
Avg. humidity
4 m/s
Avg. wind
2 ☀️
Sunny Days
20 ⛅️
Cloudy
9 🌦
Rainy
Our opinion: Belfast has OK weather in January.
Average temperature in Belfast in January
Here are the expected maximum, average and minimum temperatures in Belfast for January based on the historical data.
Last Year
Historical Data
The expected average maximum temperature in January is +9°C with a maximum of +15°C and a minimum of -1°C.
The average maximum temperature goes down 31% by the end of the month, compared with the beginning of the month, from +15°C to +10°C.
Is Belfast warm or cold in January?
Belfast is typically cool in January.
Maximum temperatures go up compared to the previous month from +8°C to +8°C. The minimum temperature also goes up from +4°C to +3°C.
Pack a sweater and a jacket as there will be cooler temperatures.
January is the coldest month in Belfast, here is the comparison with other months:
Climate in Belfast in January
Belfast weather looks like this, on average, in January and the surrounding months.
December
January
February
Avg. temperature
+8°C
+8°C
+8°C
Min. temperature
-13°C
-9°C
-7°C
Max. temperature
+15°C
+15°C
+15°C
Rainfall
83 mm
75 mm
66 mm
Wind
4 m/s
4 m/s
4 m/s
Humidity
86%
85%
82%
Air pressure
1009 HPa
1010 HPa
1011 HPa
Sunny days
2
2
2
Cloudy days
19
20
18
Rainy days
10
9
8
Snowy days
0
0
0
January weather is still as ok as in December.The temperature levels stay the same in the area of +8°C for average maximum temperature during the day.As January arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 83 mm to 75 mm.It feels drier, as humidity decreases from 86% to 85%.The average wind speed doesn’t change much during January, staying around 4 m/s.The amount of sunny days stay about the same, averaging 2 sunny days during the month.
February brings much the same weather, it remains ok.
Wind speed in Belfast in January based on historical data.
Last Year
Historical Data
The average wind speed is 5 m/s getting up to 8 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Belfast is gradually decreasing during January, going from 8 m/s to 6 m/s over the course of the month.
Rain
Amount of rainfall in mm during January in Belfast based on historical data.
Last Year
Historical Data
Typically, there is a 32% chance of rain on an average day in January, with total rainfall of approximately 25 mm. The maximum amount of rainfall per day is around 6 mm, which is considered light rain.January is a pretty wet month with over 10 rainy days, so don’t forget to pack an umbrella, raincoat, and a pair of galoshes.
Here’s how January is compared with other months in the amount of precipitation, total mm:
Belfast wettest month is October, where a typical day has a 32% chance of precipitation and 91 mm of rainfall per day. April, on the other hand, is the driest month with a mere 27% chance of precipitation and 60 mm of rainfall per day.
How was the weather last January in Belfast?
This is the weather in Belfast in January 2023:
1 January
☁️
+15°C
2 January
☁️
+11°C
3 January
🌧️
+10°C
4 January
☀️
+4°C
5 January
☁️
+5°C
6 January
🌧️
+9°C
7 January
☁️
+3°C
8 January
🌧️
+9°C
9 January
🌧️
+8°C
10 January
🌧️
+12°C
11 January
☀️
+9°C
12 January
☀️
+9°C
13 January
☁️
+8°C
14 January
☁️
+6°C
15 January
☁️
+7°C
16 January
☁️
+8°C
17 January
☀️
+7°C
18 January
☁️
+9°C
19 January
🌧️
+10°C
20 January
☁️
+8°C
21 January
☁️
+7°C
22 January
☁️
+9°C
23 January
☁️
+7°C
24 January
☁️
+9°C
25 January
☁️
+7°C
26 January
☁️
+11°C
27 January
☁️
+11°C
28 January
☁️
+12°C
29 January
☁️
+12°C
30 January
🌧️
+9°C
31 January
🌧️
+10°C
In January 2023 Belfast had 4 sunny days, 19 cloudy days, and 8 rainy days. The average maximum temperature was +9°C, with an absolute maximum of +15°C and a minimum of +3°C. The average humidity was 84%, with a maximum of 100% and a minimum of 62%. The average wind speed was 5 m/s, with a maximum of 13 m/s and a minimum of 0 m/s.
Are you planning a trip in January?
Climate Change over Years
This is how Belfast climate have been changing during last 43 years period.
The climate in Belfast in January has not changed much over the last 43 years.
The average temperature was the lowest in 1979 (+5°C) and the highest in 1989 (+10°C). The driest year was 1997 with only 21 mm of rainfall, and the wettest year was 2014 with 154 mm.
FAQ
Frequently asked questions about the weather in Belfast in January:
Is January a good time to visit Belfast?
It’s always a good time to visit Belfast, but the weather is changeable in January, so plan a mix of indoor and outdoor activities and exploring, and pack for every eventuality.
Can you sunbathe in Belfast in January?
Not really, January is not the best time to sunbathe, unless you visit a local solarium.
Is Belfast rainy in January?
Belfast is often rainy in January. You may get a bit damp when outside, so pack an umbrella, and maybe even a raincoat.
Is it sunny in Belfast in January?
Usually, it’s not very sunny in Belfast in January, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.
Other cities in United Kingdom
Check out the weather for other cities in United Kingdom.
For this page, we’ve looked at the typical weather in Belfast, based on historical hourly weather data from January 1, 1979, to December 31, 2022.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.