Belfast weather

The Belfast weather guide shows monthly weather averages (including daytime and night-time temperatures, rainfall and hours of sunshine) for Belfast, 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.

Max Day Temperature (°C)

Hours of Sunshine (daily)

  • Jan
  • Feb
  • Mar
  • Apr
  • May
  • Jun
  • Jul
  • Aug
  • Sep
  • Oct
  • Nov
  • Dec

Days with some Rainfall

Min Night Temperature (°C)

Monthly Rainfall (mm)

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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.

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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°C maximum daytime temperature in January in Belfast7
    7°C max day temperature
  • 2 hours of sunshine per day in January in Belfast2
    2 hours of sunshine per day
  • 20 days with some rainfall in January in Belfast20
    20 days with some rainfall
  • 3°C minimum night-time temperature in January in Belfast3
    3°C min night temperature
  • 103 mm monthly rainfall in January in Belfast103
    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.

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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°C maximum daytime temperature in February in Belfast7
    7°C max day temperature
  • 2 hours of sunshine per day in February in Belfast2
    2 hours of sunshine per day
  • 17 days with some rainfall in February in Belfast17
    17 days with some rainfall
  • 3°C minimum night-time temperature in February in Belfast3
    3°C min night temperature
  • 73 mm monthly rainfall in February in Belfast73
    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.

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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°C maximum daytime temperature in March in Belfast9
    9°C max day temperature
  • 3 hours of sunshine per day in March in Belfast3
    3 hours of sunshine per day
  • 19 days with some rainfall in March in Belfast19
    19 days with some rainfall
  • 3°C minimum night-time temperature in March in Belfast3
    3°C min night temperature
  • 78 mm monthly rainfall in March in Belfast78
    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.

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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°C maximum daytime temperature in April in Belfast11
    11°C max day temperature
  • 5 hours of sunshine per day in April in Belfast5
    5 hours of sunshine per day
  • 15 days with some rainfall in April in Belfast15
    15 days with some rainfall
  • 4°C minimum night-time temperature in April in Belfast4
    4°C min night temperature
  • 59 mm monthly rainfall in April in Belfast59
    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.

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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°C maximum daytime temperature in May in Belfast14
    14°C max day temperature
  • 6 hours of sunshine per day in May in Belfast6
    6 hours of sunshine per day
  • 15 days with some rainfall in May in Belfast15
    15 days with some rainfall
  • 7°C minimum night-time temperature in May in Belfast7
    7°C min night temperature
  • 55 mm monthly rainfall in May in Belfast55
    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.

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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°C maximum daytime temperature in June in Belfast17
    17°C max day temperature
  • 6 hours of sunshine per day in June in Belfast6
    6 hours of sunshine per day
  • 14 days with some rainfall in June in Belfast14
    14 days with some rainfall
  • 9°C minimum night-time temperature in June in Belfast9
    9°C min night temperature
  • 65 mm monthly rainfall in June in Belfast65
    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.

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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°C maximum daytime temperature in July in Belfast18
    18°C max day temperature
  • 5 hours of sunshine per day in July in Belfast5
    5 hours of sunshine per day
  • 16 days with some rainfall in July in Belfast16
    16 days with some rainfall
  • 11°C minimum night-time temperature in July in Belfast11
    11°C min night temperature
  • 54 mm monthly rainfall in July in Belfast54
    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.

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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°C maximum daytime temperature in August in Belfast18
    18°C max day temperature
  • 5 hours of sunshine per day in August in Belfast5
    5 hours of sunshine per day
  • 17 days with some rainfall in August in Belfast17
    17 days with some rainfall
  • 11°C minimum night-time temperature in August in Belfast11
    11°C min night temperature
  • 81 mm monthly rainfall in August in Belfast81
    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.

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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°C maximum daytime temperature in September in Belfast16
    16°C max day temperature
  • 4 hours of sunshine per day in September in Belfast4
    4 hours of sunshine per day
  • 17 days with some rainfall in September in Belfast17
    17 days with some rainfall
  • 9°C minimum night-time temperature in September in Belfast9
    9°C min night temperature
  • 84 mm monthly rainfall in September in Belfast84
    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.

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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°C maximum daytime temperature in October in Belfast13
    13°C max day temperature
  • 3 hours of sunshine per day in October in Belfast3
    3 hours of sunshine per day
  • 19 days with some rainfall in October in Belfast19
    19 days with some rainfall
  • 7°C minimum night-time temperature in October in Belfast7
    7°C min night temperature
  • 99 mm monthly rainfall in October in Belfast99
    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.

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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°C maximum daytime temperature in November in Belfast9
    9°C max day temperature
  • 2 hours of sunshine per day in November in Belfast2
    2 hours of sunshine per day
  • 19 days with some rainfall in November in Belfast19
    19 days with some rainfall
  • 5°C minimum night-time temperature in November in Belfast5
    5°C min night temperature
  • 92 mm monthly rainfall in November in Belfast92
    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.

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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°C maximum daytime temperature in December in Belfast8
    8°C max day temperature
  • 1 hours of sunshine per day in December in Belfast1
    1 hour of sunshine per day
  • 20 days with some rainfall in December in Belfast20
    20 days with some rainfall
  • 3°C minimum night-time temperature in December in Belfast3
    3°C min night temperature
  • 94 mm monthly rainfall in December in Belfast94
    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.

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