Belfast weather
The Belfast weather guide shows monthly weather averages (including daytime and night-time temperatures, rainfall and hours of sunshine) for holidays in Belfast, Northern Ireland in 2024/2025.
Belfast weather averages
Check the Belfast 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 Belfast, Northern Ireland.
Belfast weather by month
Check the weather for Belfast, Northern Ireland for a particular month by selecting from the list below. This gives the best indication of what to expect from the weather months in advance.
Belfast weather in January
The average maximum daytime temperature in 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 Belfast during January.
- 77°C max day temperature
- 22 hours of sunshine per day
- 2020 days with some rainfall
- 33°C min night temperature
- 103103 mm of monthly rainfall
On average 103 mm (4.1 inches) of rain normally falls in Belfast during January with rain falling on 20 days of the month.
Belfast weather in February
The average maximum daytime temperature in 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 Belfast during February.
- 77°C max day temperature
- 22 hours of sunshine per day
- 1717 days with some rainfall
- 33°C min night temperature
- 7373 mm of monthly rainfall
On average 73 mm (2.9 inches) of rain normally falls in Belfast during February with rain falling on 17 days of the month.
Belfast weather in March
The average maximum daytime temperature in 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 Belfast during March.
- 99°C max day temperature
- 33 hours of sunshine per day
- 1919 days with some rainfall
- 33°C min night temperature
- 7878 mm of monthly rainfall
On average 78 mm (3.1 inches) of rain normally falls in Belfast during March with rain falling on 19 days of the month.
Belfast weather in April
The average maximum daytime temperature in 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 Belfast during April.
- 1111°C max day temperature
- 55 hours of sunshine per day
- 1515 days with some rainfall
- 44°C min night temperature
- 5959 mm of monthly rainfall
On average 59 mm (2.3 inches) of rain normally falls in Belfast during April with rain falling on 15 days of the month.
Belfast weather in May
The average maximum daytime temperature in 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 Belfast during May.
- 1414°C max day temperature
- 66 hours of sunshine per day
- 1515 days with some rainfall
- 77°C min night temperature
- 5555 mm of monthly rainfall
On average 55 mm (2.2 inches) of rain normally falls in Belfast during May with rain falling on 15 days of the month.
Belfast weather in June
The average maximum daytime temperature in 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 Belfast during June.
- 1717°C max day temperature
- 66 hours of sunshine per day
- 1414 days with some rainfall
- 99°C min night temperature
- 6565 mm of monthly rainfall
On average 65 mm (2.6 inches) of rain normally falls in Belfast during June with rain falling on 14 days of the month.
Belfast weather in July
The average maximum daytime temperature in 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 Belfast during July.
- 1818°C max day temperature
- 55 hours of sunshine per day
- 1616 days with some rainfall
- 1111°C min night temperature
- 5454 mm of monthly rainfall
On average 54 mm (2.1 inches) of rain normally falls in Belfast during July with rain falling on 16 days of the month.
Belfast weather in August
The average maximum daytime temperature in 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 Belfast during August.
- 1818°C max day temperature
- 55 hours of sunshine per day
- 1717 days with some rainfall
- 1111°C min night temperature
- 8181 mm of monthly rainfall
On average 81 mm (3.2 inches) of rain normally falls in Belfast during August with rain falling on 17 days of the month.
Belfast weather in September
The average maximum daytime temperature in 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 Belfast during September.
- 1616°C max day temperature
- 44 hours of sunshine per day
- 1717 days with some rainfall
- 99°C min night temperature
- 8484 mm of monthly rainfall
On average 84 mm (3.3 inches) of rain normally falls in Belfast during September with rain falling on 17 days of the month.
Belfast weather in October
The average maximum daytime temperature in 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 Belfast during October.
- 1313°C max day temperature
- 33 hours of sunshine per day
- 1919 days with some rainfall
- 77°C min night temperature
- 9999 mm of monthly rainfall
On average 99 mm (3.9 inches) of rain normally falls in Belfast during October with rain falling on 19 days of the month.
Belfast weather in November
The average maximum daytime temperature in 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 Belfast during November.
- 99°C max day temperature
- 22 hours of sunshine per day
- 1919 days with some rainfall
- 55°C min night temperature
- 9292 mm of monthly rainfall
On average 92 mm (3.6 inches) of rain normally falls in Belfast during November with rain falling on 19 days of the month.
Belfast weather in December
The average maximum daytime temperature in 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 Belfast during December.
- 88°C max day temperature
- 11 hour of sunshine per day
- 2020 days with some rainfall
- 33°C min night temperature
- 9494 mm of monthly rainfall
On average 94 mm (3.7 inches) of rain normally falls in Belfast during December with rain falling on 20 days of the month.