Coleraine climate — normals and trends
Coleraine (United Kingdom) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 9.6 °C and it receives 1,264 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is August (13.8 °C on average) and the coldest is February (6.1 °C). Rainfall peaks in November.
Coleraine averages 0 frost days, 0 hot days (≥ 30 °C) and 208 rainy days per year.
Coleraine has warmed by +0.7 °C between 1940 and 2025, or +0.08 °C per decade. This trend is statistically significant.
The hottest day of the period reached 20.0 °C (on 25 August 2025) and the coldest -2.3 °C (on 12 January 1987).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
ColeraineNorthern Ireland
- coords
- 55.13°, -6.67°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
9.6°C
Average daily high
10.7°C
Average daily low
8.7°C
Annual rainfall
1,264mm
Sunshine / day
7.5h
Mean relative humidity
82%
Average peak wind
35.1km/h
Seasonal range
7.7°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
208 d/yr
Annual snowfall
11.9 cm
Average feels-like high
6.9 °C
Average feels-like low
3.4 °C
Average peak gust
47.9 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
9.5 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+0.7 °C
since 1940
+0.1 °C per decade · r² = 0.21 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
20.0 °C
25 August 2025
Coldest day
-2.3 °C
12 January 1987
Wettest day
62 mm
5 December 2015
Windiest day
94.5 km/h
26 December 1998
Strongest gust
159.5 km/h
26 December 1998
Hottest feels-like
20.7 °C
2 August 1990
Coldest feels-like
-13.1 °C
14 January 1984
Snowiest day
18.8 cm
30 March 2010
Sunniest day
17.0 h
10 June 1941
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 7.8 °C | +0.2 °C | 92 mm | -32 mm |
| Feb | 8.1 °C | +0.9 °C | 82 mm | -12 mm |
| Mar | 9.1 °C | +1.3 °C | 40 mm | -50 mm |
| Apr | 10.6 °C | +1.8 °C | 89 mm | +14 mm |
| May | 12.1 °C | +1.6 °C | 64 mm | -4 mm |
| Jun | 14.6 °C | +2.1 °C | 134 mm | +57 mm |
| Jul | 15.6 °C | +1.6 °C | 85 mm | -7 mm |
| Aug | 16.7 °C | +2.0 °C | 76 mm | -25 mm |
| Sep | 14.8 °C | +0.6 °C | 126 mm | +12 mm |
| Oct | 12.9 °C | +0.4 °C | 187 mm | +47 mm |
| Nov | 10.7 °C | +0.7 °C | 176 mm | +33 mm |
| Dec | 9.4 °C | +0.8 °C | 111 mm | -32 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Coleraine?
Coleraine has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 9.6 °C and it receives 1,264 mm of precipitation per year.
What is the hottest day ever recorded in Coleraine?
The hottest day measured in Coleraine between 1940 and 2025 was 25 August 2025, reaching 20.0 °C.
What is the coldest day in Coleraine?
The coldest day measured in Coleraine between 1940 and 2025 was 12 January 1987, at -2.3 °C.
Does it snow in Coleraine?
Yes. Coleraine gets on average 11.9 cm of snow per year and has around 0 frost days.
Has the climate of Coleraine warmed?
Yes: Coleraine warmed by +0.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Coleraine?
The wettest day measured in Coleraine between 1940 and 2025 was 5 December 2015, with 62 mm of rain in 24 hours.
What was the windiest day in Coleraine?
The windiest day measured in Coleraine between 1940 and 2025 was 26 December 1998, with winds reaching 94.5 km/h.
What is the warmest month in Coleraine?
The warmest month in Coleraine is August (13.8 °C on average); the coldest is February (6.1 °C).
How much does it rain in Coleraine?
Coleraine receives on average 1,264 mm of precipitation per year, spread over about 208 rainy days.
Is it sunny in Coleraine?
Coleraine gets on average 7.5 hours of sunshine per day, roughly 2,738 hours per year over 1940-2025.
What is the biggest single-day snowfall in Coleraine?
The heaviest 24-hour snowfall measured in Coleraine between 1940 and 2025 was 30 March 2010, with 18.8 cm.
Are there tropical nights in Coleraine?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Coleraine.
What was the most extreme apparent temperature in Coleraine?
In Coleraine, between 1940 and 2025, the highest apparent temperature reached 20.7 °C on 2 August 1990, and the lowest was -13.1 °C on 14 January 1984.
Compare Coleraine with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Coleraine