Carrickfergus weather by month

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

Temperature in Carrickfergus (°C)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
7°C maximum daytime temperature in January in Carrickfergus7
7°C maximum daytime temperature in February in Carrickfergus7
9°C maximum daytime temperature in March in Carrickfergus9
11°C maximum daytime temperature in April in Carrickfergus11
14°C maximum daytime temperature in May in Carrickfergus14
17°C maximum daytime temperature in June in Carrickfergus17
18°C maximum daytime temperature in July in Carrickfergus18
18°C maximum daytime temperature in August in Carrickfergus18
16°C maximum daytime temperature in September in Carrickfergus16
13°C maximum daytime temperature in October in Carrickfergus13
9°C maximum daytime temperature in November in Carrickfergus9
7°C maximum daytime temperature in December in Carrickfergus7
Min temperature (night-time)
2°C minimum night-time temperature in January in Carrickfergus2
2°C minimum night-time temperature in February in Carrickfergus2
3°C minimum night-time temperature in March in Carrickfergus3
4°C minimum night-time temperature in April in Carrickfergus4
6°C minimum night-time temperature in May in Carrickfergus6
9°C minimum night-time temperature in June in Carrickfergus9
11°C minimum night-time temperature in July in Carrickfergus11
11°C minimum night-time temperature in August in Carrickfergus11
9°C minimum night-time temperature in September in Carrickfergus9
7°C minimum night-time temperature in October in Carrickfergus7
4°C minimum night-time temperature in November in Carrickfergus4
3°C minimum night-time temperature in December in Carrickfergus3
Heat & Humidity
No heat & humidity in January in Carrickfergus0
No heat & humidity in February in Carrickfergus0
No heat & humidity in March in Carrickfergus0
No heat & humidity in April in Carrickfergus0
No heat & humidity in May in Carrickfergus0
No heat & humidity in June in Carrickfergus0
No heat & humidity in July in Carrickfergus0
No heat & humidity in August in Carrickfergus0
No heat & humidity in September in Carrickfergus0
No heat & humidity in October in Carrickfergus0
No heat & humidity in November in Carrickfergus0
No heat & humidity in December in Carrickfergus0
Sea temperature
9°C sea temperature in January in Carrickfergus9
8°C sea temperature in February in Carrickfergus8
7°C sea temperature in March in Carrickfergus7
8°C sea temperature in April in Carrickfergus8
9°C sea temperature in May in Carrickfergus9
11°C sea temperature in June in Carrickfergus11
13°C sea temperature in July in Carrickfergus13
13°C sea temperature in August in Carrickfergus13
14°C sea temperature in September in Carrickfergus14
13°C sea temperature in October in Carrickfergus13
12°C sea temperature in November in Carrickfergus12
10°C sea temperature in December in Carrickfergus10

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

Sunshine & Daylight in Carrickfergus

  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 Carrickfergus8
10 hours of daylight per day in February in Carrickfergus10
12 hours of daylight per day in March in Carrickfergus12
14 hours of daylight per day in April in Carrickfergus14
16 hours of daylight per day in May in Carrickfergus16
17 hours of daylight per day in June in Carrickfergus17
17 hours of daylight per day in July in Carrickfergus17
15 hours of daylight per day in August in Carrickfergus15
13 hours of daylight per day in September in Carrickfergus13
10 hours of daylight per day in October in Carrickfergus10
8 hours of daylight per day in November in Carrickfergus8
7 hours of daylight per day in December in Carrickfergus7
UV Index (Maximum)
No UV (maximum) index in January in Carrickfergus0
UV (maximum) index 1 (Low) in February in Carrickfergus1
UV (maximum) index 2 (Low) in March in Carrickfergus2
UV (maximum) index 3 (Moderate) in April in Carrickfergus3
UV (maximum) index 5 (Moderate) in May in Carrickfergus5
UV (maximum) index 6 (High) in June in Carrickfergus6
UV (maximum) index 6 (High) in July in Carrickfergus6
UV (maximum) index 5 (Moderate) in August in Carrickfergus5
UV (maximum) index 3 (Moderate) in September in Carrickfergus3
UV (maximum) index 2 (Low) in October in Carrickfergus2
UV (maximum) index 1 (Low) in November in Carrickfergus1
No UV (maximum) index in December in Carrickfergus0

Rainfall in Carrickfergus

  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 Carrickfergus20
15 days with some rainfall in February in Carrickfergus15
19 days with some rainfall in March in Carrickfergus19
15 days with some rainfall in April in Carrickfergus15
16 days with some rainfall in May in Carrickfergus16
15 days with some rainfall in June in Carrickfergus15
15 days with some rainfall in July in Carrickfergus15
17 days with some rainfall in August in Carrickfergus17
17 days with some rainfall in September in Carrickfergus17
19 days with some rainfall in October in Carrickfergus19
19 days with some rainfall in November in Carrickfergus19
20 days with some rainfall in December in Carrickfergus20
Average monthly rainfall (mm)
102 mm monthly rainfall in January in Carrickfergus102
70 mm monthly rainfall in February in Carrickfergus70
78 mm monthly rainfall in March in Carrickfergus78
57 mm monthly rainfall in April in Carrickfergus57
63 mm monthly rainfall in May in Carrickfergus63
66 mm monthly rainfall in June in Carrickfergus66
58 mm monthly rainfall in July in Carrickfergus58
87 mm monthly rainfall in August in Carrickfergus87
92 mm monthly rainfall in September in Carrickfergus92
102 mm monthly rainfall in October in Carrickfergus102
93 mm monthly rainfall in November in Carrickfergus93
90 mm monthly rainfall in December in Carrickfergus90

More about Carrickfergus

Carrickfergus by month

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

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The climate guide for Northern Ireland (Carrickfergus) 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 Carrickfergus?

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

Carrickfergus weather in January

Expect daytime maximum temperatures of 7°C in Carrickfergus, 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 102 mm of rainfall in the month.

  • 7°C maximum daytime temperature in January in Carrickfergus7
    7°C max day temperature
  • 2 hours of sunshine per day
  • 20 days with some rainfall in January in Carrickfergus20
    20 days with some rainfall
  • 2°C minimum night-time temperature in January in Carrickfergus2
    2°C min night temperature
  • 8 hours of daylight per day in January in Carrickfergus8
    8 hours of daylight per day
  • No heat & humidity in January in Carrickfergus0
    No heat & humidity
  • 102 mm monthly rainfall in January in Carrickfergus102
    102 mm of monthly rainfall
  • No UV (maximum) index in January in Carrickfergus0
    No UV (Maximum) Index UV index
  • 9°C sea temperature in January in Carrickfergus9
    9°C sea temperature

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Carrickfergus weather in February

Expect daytime maximum temperatures of 7°C in Carrickfergus, 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 70 mm of rainfall in the month.

  • 7°C maximum daytime temperature in February in Carrickfergus7
    7°C max day temperature
  • 2 hours of sunshine per day
  • 15 days with some rainfall in February in Carrickfergus15
    15 days with some rainfall
  • 2°C minimum night-time temperature in February in Carrickfergus2
    2°C min night temperature
  • 10 hours of daylight per day in February in Carrickfergus10
    10 hours of daylight per day
  • No heat & humidity in February in Carrickfergus0
    No heat & humidity
  • 70 mm monthly rainfall in February in Carrickfergus70
    70 mm of monthly rainfall
  • UV (maximum) index 1 (Low) in February in Carrickfergus1
    1 (Low) UV index
  • 8°C sea temperature in February in Carrickfergus8
    8°C sea temperature

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Carrickfergus weather in March

Expect daytime maximum temperatures of 9°C in Carrickfergus, 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 78 mm of rainfall in the month.

  • 9°C maximum daytime temperature in March in Carrickfergus9
    9°C max day temperature
  • 3 hours of sunshine per day
  • 19 days with some rainfall in March in Carrickfergus19
    19 days with some rainfall
  • 3°C minimum night-time temperature in March in Carrickfergus3
    3°C min night temperature
  • 12 hours of daylight per day in March in Carrickfergus12
    12 hours of daylight per day
  • No heat & humidity in March in Carrickfergus0
    No heat & humidity
  • 78 mm monthly rainfall in March in Carrickfergus78
    78 mm of monthly rainfall
  • UV (maximum) index 2 (Low) in March in Carrickfergus2
    2 (Low) UV index
  • 7°C sea temperature in March in Carrickfergus7
    7°C sea temperature

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Carrickfergus weather in April

Expect daytime maximum temperatures of 11°C in Carrickfergus, 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 57 mm of rainfall in the month.

  • 11°C maximum daytime temperature in April in Carrickfergus11
    11°C max day temperature
  • 5 hours of sunshine per day
  • 15 days with some rainfall in April in Carrickfergus15
    15 days with some rainfall
  • 4°C minimum night-time temperature in April in Carrickfergus4
    4°C min night temperature
  • 14 hours of daylight per day in April in Carrickfergus14
    14 hours of daylight per day
  • No heat & humidity in April in Carrickfergus0
    No heat & humidity
  • 57 mm monthly rainfall in April in Carrickfergus57
    57 mm of monthly rainfall
  • UV (maximum) index 3 (Moderate) in April in Carrickfergus3
    3 (Moderate) UV index
  • 8°C sea temperature in April in Carrickfergus8
    8°C sea temperature

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Carrickfergus weather in May

Expect daytime maximum temperatures of 14°C in Carrickfergus, 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 63 mm of rainfall in the month.

  • 14°C maximum daytime temperature in May in Carrickfergus14
    14°C max day temperature
  • 6 hours of sunshine per day
  • 16 days with some rainfall in May in Carrickfergus16
    16 days with some rainfall
  • 6°C minimum night-time temperature in May in Carrickfergus6
    6°C min night temperature
  • 16 hours of daylight per day in May in Carrickfergus16
    16 hours of daylight per day
  • No heat & humidity in May in Carrickfergus0
    No heat & humidity
  • 63 mm monthly rainfall in May in Carrickfergus63
    63 mm of monthly rainfall
  • UV (maximum) index 5 (Moderate) in May in Carrickfergus5
    5 (Moderate) UV index
  • 9°C sea temperature in May in Carrickfergus9
    9°C sea temperature

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Carrickfergus weather in June

Expect daytime maximum temperatures of 17°C in Carrickfergus, 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 66 mm of rainfall in the month.

  • 17°C maximum daytime temperature in June in Carrickfergus17
    17°C max day temperature
  • 6 hours of sunshine per day
  • 15 days with some rainfall in June in Carrickfergus15
    15 days with some rainfall
  • 9°C minimum night-time temperature in June in Carrickfergus9
    9°C min night temperature
  • 17 hours of daylight per day in June in Carrickfergus17
    17 hours of daylight per day
  • No heat & humidity in June in Carrickfergus0
    No heat & humidity
  • 66 mm monthly rainfall in June in Carrickfergus66
    66 mm of monthly rainfall
  • UV (maximum) index 6 (High) in June in Carrickfergus6
    6 (High) UV index
  • 11°C sea temperature in June in Carrickfergus11
    11°C sea temperature

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Carrickfergus weather in July

Expect daytime maximum temperatures of 18°C in Carrickfergus, 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 58 mm of rainfall in the month.

  • 18°C maximum daytime temperature in July in Carrickfergus18
    18°C max day temperature
  • 5 hours of sunshine per day
  • 15 days with some rainfall in July in Carrickfergus15
    15 days with some rainfall
  • 11°C minimum night-time temperature in July in Carrickfergus11
    11°C min night temperature
  • 17 hours of daylight per day in July in Carrickfergus17
    17 hours of daylight per day
  • No heat & humidity in July in Carrickfergus0
    No heat & humidity
  • 58 mm monthly rainfall in July in Carrickfergus58
    58 mm of monthly rainfall
  • UV (maximum) index 6 (High) in July in Carrickfergus6
    6 (High) UV index
  • 13°C sea temperature in July in Carrickfergus13
    13°C sea temperature

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Carrickfergus weather in August

Expect daytime maximum temperatures of 18°C in Carrickfergus, 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 87 mm of rainfall in the month.

  • 18°C maximum daytime temperature in August in Carrickfergus18
    18°C max day temperature
  • 5 hours of sunshine per day
  • 17 days with some rainfall in August in Carrickfergus17
    17 days with some rainfall
  • 11°C minimum night-time temperature in August in Carrickfergus11
    11°C min night temperature
  • 15 hours of daylight per day in August in Carrickfergus15
    15 hours of daylight per day
  • No heat & humidity in August in Carrickfergus0
    No heat & humidity
  • 87 mm monthly rainfall in August in Carrickfergus87
    87 mm of monthly rainfall
  • UV (maximum) index 5 (Moderate) in August in Carrickfergus5
    5 (Moderate) UV index
  • 13°C sea temperature in August in Carrickfergus13
    13°C sea temperature

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Carrickfergus weather in September

Expect daytime maximum temperatures of 16°C in Carrickfergus, 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 92 mm of rainfall in the month.

  • 16°C maximum daytime temperature in September in Carrickfergus16
    16°C max day temperature
  • 4 hours of sunshine per day
  • 17 days with some rainfall in September in Carrickfergus17
    17 days with some rainfall
  • 9°C minimum night-time temperature in September in Carrickfergus9
    9°C min night temperature
  • 13 hours of daylight per day in September in Carrickfergus13
    13 hours of daylight per day
  • No heat & humidity in September in Carrickfergus0
    No heat & humidity
  • 92 mm monthly rainfall in September in Carrickfergus92
    92 mm of monthly rainfall
  • UV (maximum) index 3 (Moderate) in September in Carrickfergus3
    3 (Moderate) UV index
  • 14°C sea temperature in September in Carrickfergus14
    14°C sea temperature

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Carrickfergus weather in October

Expect daytime maximum temperatures of 13°C in Carrickfergus, 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 102 mm of rainfall in the month.

  • 13°C maximum daytime temperature in October in Carrickfergus13
    13°C max day temperature
  • 3 hours of sunshine per day
  • 19 days with some rainfall in October in Carrickfergus19
    19 days with some rainfall
  • 7°C minimum night-time temperature in October in Carrickfergus7
    7°C min night temperature
  • 10 hours of daylight per day in October in Carrickfergus10
    10 hours of daylight per day
  • No heat & humidity in October in Carrickfergus0
    No heat & humidity
  • 102 mm monthly rainfall in October in Carrickfergus102
    102 mm of monthly rainfall
  • UV (maximum) index 2 (Low) in October in Carrickfergus2
    2 (Low) UV index
  • 13°C sea temperature in October in Carrickfergus13
    13°C sea temperature

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Carrickfergus weather in November

Expect daytime maximum temperatures of 9°C in Carrickfergus, 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 93 mm of rainfall in the month.

  • 9°C maximum daytime temperature in November in Carrickfergus9
    9°C max day temperature
  • 2 hours of sunshine per day
  • 19 days with some rainfall in November in Carrickfergus19
    19 days with some rainfall
  • 4°C minimum night-time temperature in November in Carrickfergus4
    4°C min night temperature
  • 8 hours of daylight per day in November in Carrickfergus8
    8 hours of daylight per day
  • No heat & humidity in November in Carrickfergus0
    No heat & humidity
  • 93 mm monthly rainfall in November in Carrickfergus93
    93 mm of monthly rainfall
  • UV (maximum) index 1 (Low) in November in Carrickfergus1
    1 (Low) UV index
  • 12°C sea temperature in November in Carrickfergus12
    12°C sea temperature

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Carrickfergus weather in December

Expect daytime maximum temperatures of 7°C in Carrickfergus, 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 90 mm of rainfall in the month.

  • 7°C maximum daytime temperature in December in Carrickfergus7
    7°C max day temperature
  • 1 hour of sunshine per day
  • 20 days with some rainfall in December in Carrickfergus20
    20 days with some rainfall
  • 3°C minimum night-time temperature in December in Carrickfergus3
    3°C min night temperature
  • 7 hours of daylight per day in December in Carrickfergus7
    7 hours of daylight per day
  • No heat & humidity in December in Carrickfergus0
    No heat & humidity
  • 90 mm monthly rainfall in December in Carrickfergus90
    90 mm of monthly rainfall
  • No UV (maximum) index in December in Carrickfergus0
    No UV (Maximum) Index UV index
  • 10°C sea temperature in December in Carrickfergus10
    10°C sea temperature

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More about Carrickfergus

Carrickfergus 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)

Expires at 23:59 on Monday 1st Dec 2025 · View all Fred Olsen offers

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The climate guide for Northern Ireland (Carrickfergus) 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 / mm)  |  Imperial (°F / inches)

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More about the UK

Compare Carrickfergus with the UK

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

Maximum daytime temperature (°C)

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

Metric (°C / mm)  |  Imperial (°F / inches)

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