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 (°F)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
45°F maximum daytime temperature in January in Carrickfergus45
45°F maximum daytime temperature in February in Carrickfergus45
48°F maximum daytime temperature in March in Carrickfergus48
52°F maximum daytime temperature in April in Carrickfergus52
57°F maximum daytime temperature in May in Carrickfergus57
63°F maximum daytime temperature in June in Carrickfergus63
64°F maximum daytime temperature in July in Carrickfergus64
64°F maximum daytime temperature in August in Carrickfergus64
61°F maximum daytime temperature in September in Carrickfergus61
55°F maximum daytime temperature in October in Carrickfergus55
48°F maximum daytime temperature in November in Carrickfergus48
45°F maximum daytime temperature in December in Carrickfergus45
Min temperature (night-time)
36°F minimum night-time temperature in January in Carrickfergus36
36°F minimum night-time temperature in February in Carrickfergus36
37°F minimum night-time temperature in March in Carrickfergus37
39°F minimum night-time temperature in April in Carrickfergus39
43°F minimum night-time temperature in May in Carrickfergus43
48°F minimum night-time temperature in June in Carrickfergus48
52°F minimum night-time temperature in July in Carrickfergus52
52°F minimum night-time temperature in August in Carrickfergus52
48°F minimum night-time temperature in September in Carrickfergus48
45°F minimum night-time temperature in October in Carrickfergus45
39°F minimum night-time temperature in November in Carrickfergus39
37°F minimum night-time temperature in December in Carrickfergus37
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
48°F sea temperature in January in Carrickfergus48
46°F sea temperature in February in Carrickfergus46
45°F sea temperature in March in Carrickfergus45
46°F sea temperature in April in Carrickfergus46
48°F sea temperature in May in Carrickfergus48
52°F sea temperature in June in Carrickfergus52
55°F sea temperature in July in Carrickfergus55
55°F sea temperature in August in Carrickfergus55
57°F sea temperature in September in Carrickfergus57
55°F sea temperature in October in Carrickfergus55
54°F sea temperature in November in Carrickfergus54
50°F sea temperature in December in Carrickfergus50

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 (inches)
4.0 inches monthly rainfall in January in Carrickfergus4.0
2.8 inches monthly rainfall in February in Carrickfergus2.8
3.1 inches monthly rainfall in March in Carrickfergus3.1
2.2 inches monthly rainfall in April in Carrickfergus2.2
2.5 inches monthly rainfall in May in Carrickfergus2.5
2.6 inches monthly rainfall in June in Carrickfergus2.6
2.3 inches monthly rainfall in July in Carrickfergus2.3
3.4 inches monthly rainfall in August in Carrickfergus3.4
3.6 inches monthly rainfall in September in Carrickfergus3.6
4.0 inches monthly rainfall in October in Carrickfergus4.0
3.7 inches monthly rainfall in November in Carrickfergus3.7
3.5 inches monthly rainfall in December in Carrickfergus3.5

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

Fred OlsenCruise deal finder

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 45°F 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 4.0 inches of rainfall in the month.

  • 45°F maximum daytime temperature in January in Carrickfergus45
    45°F max day temperature
  • 2 hours of sunshine per day
  • 20 days with some rainfall in January in Carrickfergus20
    20 days with some rainfall
  • 36°F minimum night-time temperature in January in Carrickfergus36
    36°F 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
  • 4.0 inches monthly rainfall in January in Carrickfergus4.0
    4.0 inches of monthly rainfall
  • No UV (maximum) index in January in Carrickfergus0
    No UV (Maximum) Index UV index
  • 48°F sea temperature in January in Carrickfergus48
    48°F sea temperature

Back to months

Carrickfergus weather in February

Expect daytime maximum temperatures of 45°F 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 2.8 inches of rainfall in the month.

  • 45°F maximum daytime temperature in February in Carrickfergus45
    45°F max day temperature
  • 2 hours of sunshine per day
  • 15 days with some rainfall in February in Carrickfergus15
    15 days with some rainfall
  • 36°F minimum night-time temperature in February in Carrickfergus36
    36°F 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
  • 2.8 inches monthly rainfall in February in Carrickfergus2.8
    2.8 inches of monthly rainfall
  • UV (maximum) index 1 (Low) in February in Carrickfergus1
    1 (Low) UV index
  • 46°F sea temperature in February in Carrickfergus46
    46°F sea temperature

Back to months

Carrickfergus weather in March

Expect daytime maximum temperatures of 48°F 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 3.1 inches of rainfall in the month.

  • 48°F maximum daytime temperature in March in Carrickfergus48
    48°F max day temperature
  • 3 hours of sunshine per day
  • 19 days with some rainfall in March in Carrickfergus19
    19 days with some rainfall
  • 37°F minimum night-time temperature in March in Carrickfergus37
    37°F 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
  • 3.1 inches monthly rainfall in March in Carrickfergus3.1
    3.1 inches of monthly rainfall
  • UV (maximum) index 2 (Low) in March in Carrickfergus2
    2 (Low) UV index
  • 45°F sea temperature in March in Carrickfergus45
    45°F sea temperature

Back to months

Carrickfergus weather in April

Expect daytime maximum temperatures of 52°F 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 2.2 inches of rainfall in the month.

  • 52°F maximum daytime temperature in April in Carrickfergus52
    52°F max day temperature
  • 5 hours of sunshine per day
  • 15 days with some rainfall in April in Carrickfergus15
    15 days with some rainfall
  • 39°F minimum night-time temperature in April in Carrickfergus39
    39°F 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
  • 2.2 inches monthly rainfall in April in Carrickfergus2.2
    2.2 inches of monthly rainfall
  • UV (maximum) index 3 (Moderate) in April in Carrickfergus3
    3 (Moderate) UV index
  • 46°F sea temperature in April in Carrickfergus46
    46°F sea temperature

Back to months

Carrickfergus weather in May

Expect daytime maximum temperatures of 57°F 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 2.5 inches of rainfall in the month.

  • 57°F maximum daytime temperature in May in Carrickfergus57
    57°F max day temperature
  • 6 hours of sunshine per day
  • 16 days with some rainfall in May in Carrickfergus16
    16 days with some rainfall
  • 43°F minimum night-time temperature in May in Carrickfergus43
    43°F 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
  • 2.5 inches monthly rainfall in May in Carrickfergus2.5
    2.5 inches of monthly rainfall
  • UV (maximum) index 5 (Moderate) in May in Carrickfergus5
    5 (Moderate) UV index
  • 48°F sea temperature in May in Carrickfergus48
    48°F sea temperature

Back to months

Carrickfergus weather in June

Expect daytime maximum temperatures of 63°F 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 2.6 inches of rainfall in the month.

  • 63°F maximum daytime temperature in June in Carrickfergus63
    63°F max day temperature
  • 6 hours of sunshine per day
  • 15 days with some rainfall in June in Carrickfergus15
    15 days with some rainfall
  • 48°F minimum night-time temperature in June in Carrickfergus48
    48°F 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
  • 2.6 inches monthly rainfall in June in Carrickfergus2.6
    2.6 inches of monthly rainfall
  • UV (maximum) index 6 (High) in June in Carrickfergus6
    6 (High) UV index
  • 52°F sea temperature in June in Carrickfergus52
    52°F sea temperature

Back to months

Carrickfergus weather in July

Expect daytime maximum temperatures of 64°F 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 2.3 inches of rainfall in the month.

  • 64°F maximum daytime temperature in July in Carrickfergus64
    64°F max day temperature
  • 5 hours of sunshine per day
  • 15 days with some rainfall in July in Carrickfergus15
    15 days with some rainfall
  • 52°F minimum night-time temperature in July in Carrickfergus52
    52°F 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
  • 2.3 inches monthly rainfall in July in Carrickfergus2.3
    2.3 inches of monthly rainfall
  • UV (maximum) index 6 (High) in July in Carrickfergus6
    6 (High) UV index
  • 55°F sea temperature in July in Carrickfergus55
    55°F sea temperature

Back to months

Carrickfergus weather in August

Expect daytime maximum temperatures of 64°F 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 3.4 inches of rainfall in the month.

  • 64°F maximum daytime temperature in August in Carrickfergus64
    64°F max day temperature
  • 5 hours of sunshine per day
  • 17 days with some rainfall in August in Carrickfergus17
    17 days with some rainfall
  • 52°F minimum night-time temperature in August in Carrickfergus52
    52°F 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
  • 3.4 inches monthly rainfall in August in Carrickfergus3.4
    3.4 inches of monthly rainfall
  • UV (maximum) index 5 (Moderate) in August in Carrickfergus5
    5 (Moderate) UV index
  • 55°F sea temperature in August in Carrickfergus55
    55°F sea temperature

Back to months

Carrickfergus weather in September

Expect daytime maximum temperatures of 61°F 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 3.6 inches of rainfall in the month.

  • 61°F maximum daytime temperature in September in Carrickfergus61
    61°F max day temperature
  • 4 hours of sunshine per day
  • 17 days with some rainfall in September in Carrickfergus17
    17 days with some rainfall
  • 48°F minimum night-time temperature in September in Carrickfergus48
    48°F 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
  • 3.6 inches monthly rainfall in September in Carrickfergus3.6
    3.6 inches of monthly rainfall
  • UV (maximum) index 3 (Moderate) in September in Carrickfergus3
    3 (Moderate) UV index
  • 57°F sea temperature in September in Carrickfergus57
    57°F sea temperature

Back to months

Carrickfergus weather in October

Expect daytime maximum temperatures of 55°F 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 4.0 inches of rainfall in the month.

  • 55°F maximum daytime temperature in October in Carrickfergus55
    55°F max day temperature
  • 3 hours of sunshine per day
  • 19 days with some rainfall in October in Carrickfergus19
    19 days with some rainfall
  • 45°F minimum night-time temperature in October in Carrickfergus45
    45°F 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
  • 4.0 inches monthly rainfall in October in Carrickfergus4.0
    4.0 inches of monthly rainfall
  • UV (maximum) index 2 (Low) in October in Carrickfergus2
    2 (Low) UV index
  • 55°F sea temperature in October in Carrickfergus55
    55°F sea temperature

Back to months

Carrickfergus weather in November

Expect daytime maximum temperatures of 48°F 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 3.7 inches of rainfall in the month.

  • 48°F maximum daytime temperature in November in Carrickfergus48
    48°F max day temperature
  • 2 hours of sunshine per day
  • 19 days with some rainfall in November in Carrickfergus19
    19 days with some rainfall
  • 39°F minimum night-time temperature in November in Carrickfergus39
    39°F 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
  • 3.7 inches monthly rainfall in November in Carrickfergus3.7
    3.7 inches of monthly rainfall
  • UV (maximum) index 1 (Low) in November in Carrickfergus1
    1 (Low) UV index
  • 54°F sea temperature in November in Carrickfergus54
    54°F sea temperature

Back to months

Carrickfergus weather in December

Expect daytime maximum temperatures of 45°F 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 3.5 inches of rainfall in the month.

  • 45°F maximum daytime temperature in December in Carrickfergus45
    45°F max day temperature
  • 1 hour of sunshine per day
  • 20 days with some rainfall in December in Carrickfergus20
    20 days with some rainfall
  • 37°F minimum night-time temperature in December in Carrickfergus37
    37°F 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
  • 3.5 inches monthly rainfall in December in Carrickfergus3.5
    3.5 inches of monthly rainfall
  • No UV (maximum) index in December in Carrickfergus0
    No UV (Maximum) Index UV index
  • 50°F sea temperature in December in Carrickfergus50
    50°F sea temperature

Back to months

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

Fred OlsenCruise deal finder

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)  |  Imperial (°F)

Back to top

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 (°F)

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

Metric (°C)  |  Imperial (°F)

Compare more Carrickfergus weather >>

Back to top

Related posts

Popular travel offers

Explore holiday destinations

More holidays

Save with latest deals & discounts

More deals

Airport parking

More parking

Airport lounges

More lounges

Top ^