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 2023/2024.

• Belfast weather averages
• Belfast weather by month
• Back to Northern Ireland

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.

Back to top

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.

• January
• February
• March
• April
• May
• June
• July
• August
• September
• October
• November
• December

Back to top

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.

• 7
  7°C max day temperature
• 2
  2 hours of sunshine per day
• 20
  20 days with some rainfall
• 3
  3°C min night temperature
• 103
  103 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.

Back to months

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.

• 7
  7°C max day temperature
• 2
  2 hours of sunshine per day
• 17
  17 days with some rainfall
• 3
  3°C min night temperature
• 73
  73 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.

Back to months

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.

• 9
  9°C max day temperature
• 3
  3 hours of sunshine per day
• 19
  19 days with some rainfall
• 3
  3°C min night temperature
• 78
  78 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.

Back to months

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.

• 11
  11°C max day temperature
• 5
  5 hours of sunshine per day
• 15
  15 days with some rainfall
• 4
  4°C min night temperature
• 59
  59 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.

Back to months

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.

• 14
  14°C max day temperature
• 6
  6 hours of sunshine per day
• 15
  15 days with some rainfall
• 7
  7°C min night temperature
• 55
  55 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.

Back to months

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.

• 17
  17°C max day temperature
• 6
  6 hours of sunshine per day
• 14
  14 days with some rainfall
• 9
  9°C min night temperature
• 65
  65 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.

Back to months

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.

• 18
  18°C max day temperature
• 5
  5 hours of sunshine per day
• 16
  16 days with some rainfall
• 11
  11°C min night temperature
• 54
  54 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.

Back to months

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.

• 18
  18°C max day temperature
• 5
  5 hours of sunshine per day
• 17
  17 days with some rainfall
• 11
  11°C min night temperature
• 81
  81 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.

Back to months

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.

• 16
  16°C max day temperature
• 4
  4 hours of sunshine per day
• 17
  17 days with some rainfall
• 9
  9°C min night temperature
• 84
  84 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.

Back to months

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.

• 13
  13°C max day temperature
• 3
  3 hours of sunshine per day
• 19
  19 days with some rainfall
• 7
  7°C min night temperature
• 99
  99 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.

Back to months

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.

• 9
  9°C max day temperature
• 2
  2 hours of sunshine per day
• 19
  19 days with some rainfall
• 5
  5°C min night temperature
• 92
  92 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.

Back to months

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.

• 8
  8°C max day temperature
• 1
  1 hour of sunshine per day
• 20
  20 days with some rainfall
• 3
  3°C min night temperature
• 94
  94 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.

Back to months