Northern Ireland weather
The Northern Ireland weather guide shows the monthly weather averages (including daytime and night-time temperatures, rainfall and hours of sunshine) for Northern Ireland.
- Northern Ireland weather averages
- Northern Ireland weather by month
- Destinations in Northern Ireland
Northern Ireland weather averages
Check the Northern Ireland weather averages for each month of the year including maximum daytime and minimum night-time temperatures, monthly rainfall, number of days with rain and average daily hours of sunshine for Northern Ireland. The Northern Ireland weather averages shown below are for Belfast.
Northern Ireland weather by month
Check the weather for Northern Ireland for a particular month by selecting from the list below. The Northern Ireland monthly weather averages are for Belfast. This gives the best indication of what to expect from the weather months in advance.
Northern Ireland weather in January
The average maximum daytime temperature in Northern Ireland (Belfast) in January is a cold 7°C (45°F), while the average minimum night-time temperature is a cold 3°C (37°F). You can expect on average 2 hours of sunshine a day in Northern Ireland (Belfast) during January.
- 7°C max day temperature
7 - 2 hours of sunshine per day
2 - 20 days with some rainfall
20 - 3°C min night temperature
3 - 103 mm of monthly rainfall
103
On average 103 mm (4.1 inches) of rain normally falls in Northern Ireland (Belfast) during January with rain falling on 20 days of the month.
Northern Ireland weather in February
The average maximum daytime temperature in Northern Ireland (Belfast) in February is a cold 7°C (45°F), while the average minimum night-time temperature is a cold 3°C (37°F). You can expect on average 2 hours of sunshine a day in Northern Ireland (Belfast) during February.
- 7°C max day temperature7
- 2 hours of sunshine per day2
- 17 days with some rainfall
17 - 3°C min night temperature3
- 73 mm of monthly rainfall
73
On average 73 mm (2.9 inches) of rain normally falls in Northern Ireland (Belfast) during February with rain falling on 17 days of the month.
Northern Ireland weather in March
The average maximum daytime temperature in Northern Ireland (Belfast) in March is a cool 9°C (48°F), while the average minimum night-time temperature is a cold 3°C (37°F). You can expect on average 3 hours of sunshine a day in Northern Ireland (Belfast) during March.
- 9°C max day temperature
9 - 3 hours of sunshine per day
3 - 19 days with some rainfall19
- 3°C min night temperature3
- 78 mm of monthly rainfall78
On average 78 mm (3.1 inches) of rain normally falls in Northern Ireland (Belfast) during March with rain falling on 19 days of the month.
Northern Ireland weather in April
The average maximum daytime temperature in Northern Ireland (Belfast) in April is a cool 11°C (52°F), while the average minimum night-time temperature is a cold 4°C (39°F). You can expect on average 5 hours of sunshine a day in Northern Ireland (Belfast) during April.
- 11°C max day temperature11
- 5 hours of sunshine per day
5 - 15 days with some rainfall
15 - 4°C min night temperature4
- 59 mm of monthly rainfall
59
On average 59 mm (2.3 inches) of rain normally falls in Northern Ireland (Belfast) during April with rain falling on 15 days of the month.
Northern Ireland weather in May
The average maximum daytime temperature in Northern Ireland (Belfast) in May is a comfortable 14°C (57°F), while the average minimum night-time temperature is a cold 7°C (45°F). You can expect on average 6 hours of sunshine a day in Northern Ireland (Belfast) during May.
- 14°C max day temperature
14 - 6 hours of sunshine per day
6 - 15 days with some rainfall15
- 7°C min night temperature7
- 55 mm of monthly rainfall55
On average 55 mm (2.2 inches) of rain normally falls in Northern Ireland (Belfast) during May with rain falling on 15 days of the month.
Northern Ireland weather in June
The average maximum daytime temperature in Northern Ireland (Belfast) in June is a comfortable 17°C (63°F), while the average minimum night-time temperature is a cool 9°C (48°F). You can expect on average 6 hours of sunshine a day in Northern Ireland (Belfast) during June.
- 17°C max day temperature
17 - 6 hours of sunshine per day6
- 14 days with some rainfall14
- 9°C min night temperature9
- 65 mm of monthly rainfall65
On average 65 mm (2.6 inches) of rain normally falls in Northern Ireland (Belfast) during June with rain falling on 14 days of the month.
Northern Ireland weather in July
The average maximum daytime temperature in Northern Ireland (Belfast) in July is a comfortable 18°C (64°F), while the average minimum night-time temperature is a cool 11°C (52°F). You can expect on average 5 hours of sunshine a day in Northern Ireland (Belfast) during July.
- 18°C max day temperature
18 - 5 hours of sunshine per day5
- 16 days with some rainfall16
- 11°C min night temperature11
- 54 mm of monthly rainfall54
On average 54 mm (2.1 inches) of rain normally falls in Northern Ireland (Belfast) during July with rain falling on 16 days of the month.
Northern Ireland weather in August
The average maximum daytime temperature in Northern Ireland (Belfast) in August is a comfortable 18°C (64°F), while the average minimum night-time temperature is a cool 11°C (52°F). You can expect on average 5 hours of sunshine a day in Northern Ireland (Belfast) during August.
- 18°C max day temperature18
- 5 hours of sunshine per day5
- 17 days with some rainfall17
- 11°C min night temperature11
- 81 mm of monthly rainfall
81
On average 81 mm (3.2 inches) of rain normally falls in Northern Ireland (Belfast) during August with rain falling on 17 days of the month.
Northern Ireland weather in September
The average maximum daytime temperature in Northern Ireland (Belfast) in September is a comfortable 16°C (61°F), while the average minimum night-time temperature is a cool 9°C (48°F). You can expect on average 4 hours of sunshine a day in Northern Ireland (Belfast) during September.
- 16°C max day temperature16
- 4 hours of sunshine per day
4 - 17 days with some rainfall17
- 9°C min night temperature9
- 84 mm of monthly rainfall84
On average 84 mm (3.3 inches) of rain normally falls in Northern Ireland (Belfast) during September with rain falling on 17 days of the month.
Northern Ireland weather in October
The average maximum daytime temperature in Northern Ireland (Belfast) in October is a cool 13°C (55°F), while the average minimum night-time temperature is a cold 7°C (45°F). You can expect on average 3 hours of sunshine a day in Northern Ireland (Belfast) during October.
- 13°C max day temperature13
- 3 hours of sunshine per day3
- 19 days with some rainfall19
- 7°C min night temperature7
- 99 mm of monthly rainfall99
On average 99 mm (3.9 inches) of rain normally falls in Northern Ireland (Belfast) during October with rain falling on 19 days of the month.
Northern Ireland weather in November
The average maximum daytime temperature in Northern Ireland (Belfast) in November is a cool 9°C (48°F), while the average minimum night-time temperature is a cold 5°C (41°F). You can expect on average 2 hours of sunshine a day in Northern Ireland (Belfast) during November.
- 9°C max day temperature9
- 2 hours of sunshine per day2
- 19 days with some rainfall19
- 5°C min night temperature5
- 92 mm of monthly rainfall92
On average 92 mm (3.6 inches) of rain normally falls in Northern Ireland (Belfast) during November with rain falling on 19 days of the month.
Northern Ireland weather in December
The average maximum daytime temperature in Northern Ireland (Belfast) in December is a cool 8°C (46°F), while the average minimum night-time temperature is a cold 3°C (37°F). You can expect on average 1 hours of sunshine a day in Northern Ireland (Belfast) during December.
- 8°C max day temperature8
- 1 hour of sunshine per day
1 - 20 days with some rainfall20
- 3°C min night temperature3
- 94 mm of monthly rainfall94
On average 94 mm (3.7 inches) of rain normally falls in Northern Ireland (Belfast) during December with rain falling on 20 days of the month.
Northern Ireland destinations
Browse the destinations below to find a holiday weather guide to help you plan your next holiday to Northern Ireland. If you can't find the destination you are looking for, try the destination search.
Top destinations in Northern Ireland
- Aghanloo
- Antrim
- Ardglass
- Armagh
- Armoy
- Aughamullan
- Augher
- Aughnacloy
- Ballycarry
- Ballycastle
- Ballyclare
- Ballymena
- Bangor
- Belfast
- Carrickfergus
- Coleraine
- Cookstown
- Craigavon
- Dundonald
- Dunmurry
- Enniskillen
- Kilkeel
- Larne
- Lisburn
- Londonderry
- Newry
- Newtownabbey
- Newtownards
- Omagh
- Strabane