Coleraine weather
The Coleraine weather guide shows monthly weather averages (including daytime and night-time temperatures, rainfall and hours of sunshine) for holidays in Coleraine, Northern Ireland in 2026/2027.
Coleraine weather averages
Check the Coleraine 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 Coleraine, Northern Ireland.
Coleraine weather by month
Check the weather for Coleraine, 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.
Coleraine weather in January
The average maximum daytime temperature in Coleraine in January is a cold 7°C (45°F), while the average minimum night-time temperature is a cold 2°C (36°F). You can expect on average 1 hours of sunshine a day in Coleraine during January.
- 7°C max day temperature
7 - 1 hour of sunshine per day
1 - 23 days with some rainfall
23 - 2°C min night temperature
2 - 124 mm of monthly rainfall
124
On average 124 mm (4.9 inches) of rain normally falls in Coleraine during January with rain falling on 23 days of the month.
Coleraine weather in February
The average maximum daytime temperature in Coleraine in February is a cool 8°C (46°F), while the average minimum night-time temperature is a cold 2°C (36°F). You can expect on average 2 hours of sunshine a day in Coleraine during February.
- 8°C max day temperature
8 - 2 hours of sunshine per day
2 - 19 days with some rainfall
19 - 2°C min night temperature2
- 88 mm of monthly rainfall
88
On average 88 mm (3.5 inches) of rain normally falls in Coleraine during February with rain falling on 19 days of the month.
Coleraine weather in March
The average maximum daytime temperature in Coleraine 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 Coleraine during March.
- 9°C max day temperature9
- 3 hours of sunshine per day
3 - 20 days with some rainfall20
- 3°C min night temperature3
- 94 mm of monthly rainfall94
On average 94 mm (3.7 inches) of rain normally falls in Coleraine during March with rain falling on 20 days of the month.
Coleraine weather in April
The average maximum daytime temperature in Coleraine 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 Coleraine during April.
- 11°C max day temperature11
- 5 hours of sunshine per day
5 - 17 days with some rainfall
17 - 4°C min night temperature4
- 66 mm of monthly rainfall
66
On average 66 mm (2.6 inches) of rain normally falls in Coleraine during April with rain falling on 17 days of the month.
Coleraine weather in May
The average maximum daytime temperature in Coleraine in May is a comfortable 14°C (57°F), while the average minimum night-time temperature is a cold 6°C (43°F). You can expect on average 6 hours of sunshine a day in Coleraine during May.
- 14°C max day temperature
14 - 6 hours of sunshine per day
6 - 16 days with some rainfall16
- 6°C min night temperature6
- 58 mm of monthly rainfall
58
On average 58 mm (2.3 inches) of rain normally falls in Coleraine during May with rain falling on 16 days of the month.
Coleraine weather in June
The average maximum daytime temperature in Coleraine in June 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 5 hours of sunshine a day in Coleraine during June.
- 16°C max day temperature
16 - 5 hours of sunshine per day5
- 16 days with some rainfall16
- 9°C min night temperature9
- 68 mm of monthly rainfall68
On average 68 mm (2.7 inches) of rain normally falls in Coleraine during June with rain falling on 16 days of the month.
Coleraine weather in July
The average maximum daytime temperature in Coleraine in July is a comfortable 17°C (63°F), while the average minimum night-time temperature is a cool 11°C (52°F). You can expect on average 4 hours of sunshine a day in Coleraine during July.
- 17°C max day temperature17
- 4 hours of sunshine per day
4 - 18 days with some rainfall18
- 11°C min night temperature11
- 76 mm of monthly rainfall76
On average 76 mm (3 inches) of rain normally falls in Coleraine during July with rain falling on 18 days of the month.
Coleraine weather in August
The average maximum daytime temperature in Coleraine 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 4 hours of sunshine a day in Coleraine during August.
- 18°C max day temperature
18 - 4 hours of sunshine per day4
- 19 days with some rainfall19
- 11°C min night temperature11
- 86 mm of monthly rainfall86
On average 86 mm (3.4 inches) of rain normally falls in Coleraine during August with rain falling on 19 days of the month.
Coleraine weather in September
The average maximum daytime temperature in Coleraine 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 3 hours of sunshine a day in Coleraine during September.
- 16°C max day temperature16
- 3 hours of sunshine per day3
- 21 days with some rainfall21
- 9°C min night temperature9
- 98 mm of monthly rainfall98
On average 98 mm (3.9 inches) of rain normally falls in Coleraine during September with rain falling on 21 days of the month.
Coleraine weather in October
The average maximum daytime temperature in Coleraine 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 Coleraine during October.
- 13°C max day temperature13
- 3 hours of sunshine per day3
- 22 days with some rainfall22
- 7°C min night temperature7
- 118 mm of monthly rainfall
118
On average 118 mm (4.6 inches) of rain normally falls in Coleraine during October with rain falling on 22 days of the month.
Coleraine weather in November
The average maximum daytime temperature in Coleraine in November is a cool 10°C (50°F), while the average minimum night-time temperature is a cold 4°C (39°F). You can expect on average 2 hours of sunshine a day in Coleraine during November.
- 10°C max day temperature10
- 2 hours of sunshine per day2
- 22 days with some rainfall22
- 4°C min night temperature4
- 115 mm of monthly rainfall115
On average 115 mm (4.5 inches) of rain normally falls in Coleraine during November with rain falling on 22 days of the month.
Coleraine weather in December
The average maximum daytime temperature in Coleraine 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 Coleraine during December.
- 8°C max day temperature8
- 1 hour of sunshine per day1
- 23 days with some rainfall23
- 3°C min night temperature3
- 116 mm of monthly rainfall116
On average 116 mm (4.6 inches) of rain normally falls in Coleraine during December with rain falling on 23 days of the month.