Bangor weather by month

Check out Bangor weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.

Temperature in Bangor (°F)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
45°F maximum daytime temperature in January in Bangor45
45°F maximum daytime temperature in February in Bangor45
48°F maximum daytime temperature in March in Bangor48
52°F maximum daytime temperature in April in Bangor52
57°F maximum daytime temperature in May in Bangor57
63°F maximum daytime temperature in June in Bangor63
64°F maximum daytime temperature in July in Bangor64
64°F maximum daytime temperature in August in Bangor64
61°F maximum daytime temperature in September in Bangor61
55°F maximum daytime temperature in October in Bangor55
48°F maximum daytime temperature in November in Bangor48
46°F maximum daytime temperature in December in Bangor46
Min temperature (night-time)
36°F minimum night-time temperature in January in Bangor36
36°F minimum night-time temperature in February in Bangor36
37°F minimum night-time temperature in March in Bangor37
39°F minimum night-time temperature in April in Bangor39
43°F minimum night-time temperature in May in Bangor43
48°F minimum night-time temperature in June in Bangor48
52°F minimum night-time temperature in July in Bangor52
52°F minimum night-time temperature in August in Bangor52
48°F minimum night-time temperature in September in Bangor48
45°F minimum night-time temperature in October in Bangor45
39°F minimum night-time temperature in November in Bangor39
37°F minimum night-time temperature in December in Bangor37
Heat & Humidity
No heat & humidity in January in Bangor0
No heat & humidity in February in Bangor0
No heat & humidity in March in Bangor0
No heat & humidity in April in Bangor0
No heat & humidity in May in Bangor0
No heat & humidity in June in Bangor0
No heat & humidity in July in Bangor0
No heat & humidity in August in Bangor0
No heat & humidity in September in Bangor0
No heat & humidity in October in Bangor0
No heat & humidity in November in Bangor0
No heat & humidity in December in Bangor0
Sea temperature
48°F sea temperature in January in Bangor48
46°F sea temperature in February in Bangor46
45°F sea temperature in March in Bangor45
46°F sea temperature in April in Bangor46
48°F sea temperature in May in Bangor48
52°F sea temperature in June in Bangor52
55°F sea temperature in July in Bangor55
55°F sea temperature in August in Bangor55
57°F sea temperature in September in Bangor57
55°F sea temperature in October in Bangor55
54°F sea temperature in November in Bangor54
50°F sea temperature in December in Bangor50

Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme

Sunshine & Daylight in Bangor

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daily hours of sunshine
Daily hours of daylight
8 hours of daylight per day in January in Bangor8
10 hours of daylight per day in February in Bangor10
12 hours of daylight per day in March in Bangor12
14 hours of daylight per day in April in Bangor14
16 hours of daylight per day in May in Bangor16
17 hours of daylight per day in June in Bangor17
17 hours of daylight per day in July in Bangor17
15 hours of daylight per day in August in Bangor15
13 hours of daylight per day in September in Bangor13
10 hours of daylight per day in October in Bangor10
8 hours of daylight per day in November in Bangor8
7 hours of daylight per day in December in Bangor7
UV Index (Maximum)
No UV (maximum) index in January in Bangor0
UV (maximum) index 1 (Low) in February in Bangor1
UV (maximum) index 2 (Low) in March in Bangor2
UV (maximum) index 3 (Moderate) in April in Bangor3
UV (maximum) index 5 (Moderate) in May in Bangor5
UV (maximum) index 6 (High) in June in Bangor6
UV (maximum) index 6 (High) in July in Bangor6
UV (maximum) index 5 (Moderate) in August in Bangor5
UV (maximum) index 3 (Moderate) in September in Bangor3
UV (maximum) index 2 (Low) in October in Bangor2
UV (maximum) index 1 (Low) in November in Bangor1
No UV (maximum) index in December in Bangor0

Rainfall in Bangor

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Number of days with some rain
20 days with some rainfall in January in Bangor20
15 days with some rainfall in February in Bangor15
19 days with some rainfall in March in Bangor19
15 days with some rainfall in April in Bangor15
16 days with some rainfall in May in Bangor16
15 days with some rainfall in June in Bangor15
15 days with some rainfall in July in Bangor15
17 days with some rainfall in August in Bangor17
17 days with some rainfall in September in Bangor17
19 days with some rainfall in October in Bangor19
19 days with some rainfall in November in Bangor19
20 days with some rainfall in December in Bangor20
Average monthly rainfall (inches)
3.9 inches monthly rainfall in January in Bangor3.9
2.7 inches monthly rainfall in February in Bangor2.7
2.9 inches monthly rainfall in March in Bangor2.9
2.3 inches monthly rainfall in April in Bangor2.3
2.4 inches monthly rainfall in May in Bangor2.4
2.5 inches monthly rainfall in June in Bangor2.5
2.2 inches monthly rainfall in July in Bangor2.2
3.3 inches monthly rainfall in August in Bangor3.3
3.5 inches monthly rainfall in September in Bangor3.5
3.8 inches monthly rainfall in October in Bangor3.8
3.5 inches monthly rainfall in November in Bangor3.5
3.5 inches monthly rainfall in December in Bangor3.5

More about Bangor

Bangor by month

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

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The climate guide for Northern Ireland (Bangor) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

What's the climate like in Bangor?

Bangor has a temperate climate with warm summers and some rainfall in all months.

Bangor weather in January

Expect daytime maximum temperatures of 45°F in Bangor, Northern Ireland in January based on long-term weather averages. There are 2 hours of sunshine per day on average with 20 days with some rainfall and typically 3.9 inches of rainfall in the month.

  • 45°F maximum daytime temperature in January in Bangor45
    45°F max day temperature
  • 2 hours of sunshine per day
  • 20 days with some rainfall in January in Bangor20
    20 days with some rainfall
  • 36°F minimum night-time temperature in January in Bangor36
    36°F min night temperature
  • 8 hours of daylight per day in January in Bangor8
    8 hours of daylight per day
  • No heat & humidity in January in Bangor0
    No heat & humidity
  • 3.9 inches monthly rainfall in January in Bangor3.9
    3.9 inches of monthly rainfall
  • No UV (maximum) index in January in Bangor0
    No UV (Maximum) Index UV index
  • 48°F sea temperature in January in Bangor48
    48°F sea temperature

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Bangor weather in February

Expect daytime maximum temperatures of 45°F in Bangor, Northern Ireland in February based on long-term weather averages. There are 2 hours of sunshine per day on average with 15 days with some rainfall and typically 2.7 inches of rainfall in the month.

  • 45°F maximum daytime temperature in February in Bangor45
    45°F max day temperature
  • 2 hours of sunshine per day
  • 15 days with some rainfall in February in Bangor15
    15 days with some rainfall
  • 36°F minimum night-time temperature in February in Bangor36
    36°F min night temperature
  • 10 hours of daylight per day in February in Bangor10
    10 hours of daylight per day
  • No heat & humidity in February in Bangor0
    No heat & humidity
  • 2.7 inches monthly rainfall in February in Bangor2.7
    2.7 inches of monthly rainfall
  • UV (maximum) index 1 (Low) in February in Bangor1
    1 (Low) UV index
  • 46°F sea temperature in February in Bangor46
    46°F sea temperature

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Bangor weather in March

Expect daytime maximum temperatures of 48°F in Bangor, Northern Ireland in March based on long-term weather averages. There are 3 hours of sunshine per day on average with 19 days with some rainfall and typically 2.9 inches of rainfall in the month.

  • 48°F maximum daytime temperature in March in Bangor48
    48°F max day temperature
  • 3 hours of sunshine per day
  • 19 days with some rainfall in March in Bangor19
    19 days with some rainfall
  • 37°F minimum night-time temperature in March in Bangor37
    37°F min night temperature
  • 12 hours of daylight per day in March in Bangor12
    12 hours of daylight per day
  • No heat & humidity in March in Bangor0
    No heat & humidity
  • 2.9 inches monthly rainfall in March in Bangor2.9
    2.9 inches of monthly rainfall
  • UV (maximum) index 2 (Low) in March in Bangor2
    2 (Low) UV index
  • 45°F sea temperature in March in Bangor45
    45°F sea temperature

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Bangor weather in April

Expect daytime maximum temperatures of 52°F in Bangor, Northern Ireland in April based on long-term weather averages. There are 5 hours of sunshine per day on average with 15 days with some rainfall and typically 2.3 inches of rainfall in the month.

  • 52°F maximum daytime temperature in April in Bangor52
    52°F max day temperature
  • 5 hours of sunshine per day
  • 15 days with some rainfall in April in Bangor15
    15 days with some rainfall
  • 39°F minimum night-time temperature in April in Bangor39
    39°F min night temperature
  • 14 hours of daylight per day in April in Bangor14
    14 hours of daylight per day
  • No heat & humidity in April in Bangor0
    No heat & humidity
  • 2.3 inches monthly rainfall in April in Bangor2.3
    2.3 inches of monthly rainfall
  • UV (maximum) index 3 (Moderate) in April in Bangor3
    3 (Moderate) UV index
  • 46°F sea temperature in April in Bangor46
    46°F sea temperature

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Bangor weather in May

Expect daytime maximum temperatures of 57°F in Bangor, Northern Ireland in May based on long-term weather averages. There are 6 hours of sunshine per day on average with 16 days with some rainfall and typically 2.4 inches of rainfall in the month.

  • 57°F maximum daytime temperature in May in Bangor57
    57°F max day temperature
  • 6 hours of sunshine per day
  • 16 days with some rainfall in May in Bangor16
    16 days with some rainfall
  • 43°F minimum night-time temperature in May in Bangor43
    43°F min night temperature
  • 16 hours of daylight per day in May in Bangor16
    16 hours of daylight per day
  • No heat & humidity in May in Bangor0
    No heat & humidity
  • 2.4 inches monthly rainfall in May in Bangor2.4
    2.4 inches of monthly rainfall
  • UV (maximum) index 5 (Moderate) in May in Bangor5
    5 (Moderate) UV index
  • 48°F sea temperature in May in Bangor48
    48°F sea temperature

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Bangor weather in June

Expect daytime maximum temperatures of 63°F in Bangor, Northern Ireland in June based on long-term weather averages. There are 6 hours of sunshine per day on average with 15 days with some rainfall and typically 2.5 inches of rainfall in the month.

  • 63°F maximum daytime temperature in June in Bangor63
    63°F max day temperature
  • 6 hours of sunshine per day
  • 15 days with some rainfall in June in Bangor15
    15 days with some rainfall
  • 48°F minimum night-time temperature in June in Bangor48
    48°F min night temperature
  • 17 hours of daylight per day in June in Bangor17
    17 hours of daylight per day
  • No heat & humidity in June in Bangor0
    No heat & humidity
  • 2.5 inches monthly rainfall in June in Bangor2.5
    2.5 inches of monthly rainfall
  • UV (maximum) index 6 (High) in June in Bangor6
    6 (High) UV index
  • 52°F sea temperature in June in Bangor52
    52°F sea temperature

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Bangor weather in July

Expect daytime maximum temperatures of 64°F in Bangor, Northern Ireland in July based on long-term weather averages. There are 5 hours of sunshine per day on average with 15 days with some rainfall and typically 2.2 inches of rainfall in the month.

  • 64°F maximum daytime temperature in July in Bangor64
    64°F max day temperature
  • 5 hours of sunshine per day
  • 15 days with some rainfall in July in Bangor15
    15 days with some rainfall
  • 52°F minimum night-time temperature in July in Bangor52
    52°F min night temperature
  • 17 hours of daylight per day in July in Bangor17
    17 hours of daylight per day
  • No heat & humidity in July in Bangor0
    No heat & humidity
  • 2.2 inches monthly rainfall in July in Bangor2.2
    2.2 inches of monthly rainfall
  • UV (maximum) index 6 (High) in July in Bangor6
    6 (High) UV index
  • 55°F sea temperature in July in Bangor55
    55°F sea temperature

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Bangor weather in August

Expect daytime maximum temperatures of 64°F in Bangor, Northern Ireland in August based on long-term weather averages. There are 5 hours of sunshine per day on average with 17 days with some rainfall and typically 3.3 inches of rainfall in the month.

  • 64°F maximum daytime temperature in August in Bangor64
    64°F max day temperature
  • 5 hours of sunshine per day
  • 17 days with some rainfall in August in Bangor17
    17 days with some rainfall
  • 52°F minimum night-time temperature in August in Bangor52
    52°F min night temperature
  • 15 hours of daylight per day in August in Bangor15
    15 hours of daylight per day
  • No heat & humidity in August in Bangor0
    No heat & humidity
  • 3.3 inches monthly rainfall in August in Bangor3.3
    3.3 inches of monthly rainfall
  • UV (maximum) index 5 (Moderate) in August in Bangor5
    5 (Moderate) UV index
  • 55°F sea temperature in August in Bangor55
    55°F sea temperature

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Bangor weather in September

Expect daytime maximum temperatures of 61°F in Bangor, Northern Ireland in September based on long-term weather averages. There are 4 hours of sunshine per day on average with 17 days with some rainfall and typically 3.5 inches of rainfall in the month.

  • 61°F maximum daytime temperature in September in Bangor61
    61°F max day temperature
  • 4 hours of sunshine per day
  • 17 days with some rainfall in September in Bangor17
    17 days with some rainfall
  • 48°F minimum night-time temperature in September in Bangor48
    48°F min night temperature
  • 13 hours of daylight per day in September in Bangor13
    13 hours of daylight per day
  • No heat & humidity in September in Bangor0
    No heat & humidity
  • 3.5 inches monthly rainfall in September in Bangor3.5
    3.5 inches of monthly rainfall
  • UV (maximum) index 3 (Moderate) in September in Bangor3
    3 (Moderate) UV index
  • 57°F sea temperature in September in Bangor57
    57°F sea temperature

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Bangor weather in October

Expect daytime maximum temperatures of 55°F in Bangor, Northern Ireland in October based on long-term weather averages. There are 3 hours of sunshine per day on average with 19 days with some rainfall and typically 3.8 inches of rainfall in the month.

  • 55°F maximum daytime temperature in October in Bangor55
    55°F max day temperature
  • 3 hours of sunshine per day
  • 19 days with some rainfall in October in Bangor19
    19 days with some rainfall
  • 45°F minimum night-time temperature in October in Bangor45
    45°F min night temperature
  • 10 hours of daylight per day in October in Bangor10
    10 hours of daylight per day
  • No heat & humidity in October in Bangor0
    No heat & humidity
  • 3.8 inches monthly rainfall in October in Bangor3.8
    3.8 inches of monthly rainfall
  • UV (maximum) index 2 (Low) in October in Bangor2
    2 (Low) UV index
  • 55°F sea temperature in October in Bangor55
    55°F sea temperature

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Bangor weather in November

Expect daytime maximum temperatures of 48°F in Bangor, Northern Ireland in November based on long-term weather averages. There are 2 hours of sunshine per day on average with 19 days with some rainfall and typically 3.5 inches of rainfall in the month.

  • 48°F maximum daytime temperature in November in Bangor48
    48°F max day temperature
  • 2 hours of sunshine per day
  • 19 days with some rainfall in November in Bangor19
    19 days with some rainfall
  • 39°F minimum night-time temperature in November in Bangor39
    39°F min night temperature
  • 8 hours of daylight per day in November in Bangor8
    8 hours of daylight per day
  • No heat & humidity in November in Bangor0
    No heat & humidity
  • 3.5 inches monthly rainfall in November in Bangor3.5
    3.5 inches of monthly rainfall
  • UV (maximum) index 1 (Low) in November in Bangor1
    1 (Low) UV index
  • 54°F sea temperature in November in Bangor54
    54°F sea temperature

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Bangor weather in December

Expect daytime maximum temperatures of 46°F in Bangor, Northern Ireland in December based on long-term weather averages. There is 1 hour of sunshine per day on average with 20 days with some rainfall and typically 3.5 inches of rainfall in the month.

  • 46°F maximum daytime temperature in December in Bangor46
    46°F max day temperature
  • 1 hour of sunshine per day
  • 20 days with some rainfall in December in Bangor20
    20 days with some rainfall
  • 37°F minimum night-time temperature in December in Bangor37
    37°F min night temperature
  • 7 hours of daylight per day in December in Bangor7
    7 hours of daylight per day
  • No heat & humidity in December in Bangor0
    No heat & humidity
  • 3.5 inches monthly rainfall in December in Bangor3.5
    3.5 inches of monthly rainfall
  • No UV (maximum) index in December in Bangor0
    No UV (Maximum) Index UV index
  • 50°F sea temperature in December in Bangor50
    50°F sea temperature

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More about Bangor

Bangor by month

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

Recommended for Northern Ireland

  • Save up to £200 per person on cruises in 2025/2026
  • Book online in the Fred Olsen Black Friday sale
  • Travel before 31st December 2026 (inclusive)

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The climate guide for Northern Ireland (Bangor) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C)  |  Imperial (°F)

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More about the UK

Compare Bangor with the UK

Below the Bangor chart shows average maximum daytime temperature for Bangor, North Down, Northern Ireland and the UK (London).

Maximum daytime temperature (°F)

Bangor, North Down, Northern Ireland
UK (London)
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Metric (°C)  |  Imperial (°F)

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