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Weather & Climate in Coleraine, United Kingdom
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Coleraine experiences four distinct seasons with an average annual temperature of 48°F (9°C). Winters average 40°F in January while summers reach 58°F in July / relatively mild seasonal variation. The area gets 237 sunny days per year, above the national average. Annual precipitation totals 54.3 inches (wetter than the 38-inch national average). The city sits at an elevation of 16 feet.
Temperature
40°F Jan (5°C)
58°F Jul (14°C)
| Annual Average | 48.2°F |
| 11% below US avg | |
| January Average | 40°F (5°C) |
| July Average | 58°F (14°C) |
| Sunny Days | 237 days/yr |
Geography
| Elevation | 16 ft (5 m) |
| Area | 1,043.6 sq mi (2,702.8 km²) |
| Population Density | 25/sq mi |
| Coordinates | 55.1333°N, 6.6667°W |
| Timezone | Europe/London |
Precipitation & Snow
Air Quality
Earthquake History
4 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.5.
| May 3, 1998 | Scotland, United Kingdom | M3.5 | 110 km | 15 km |
| Jan 26, 1990 | 34 km N of Isle of Islay, United Kingdom | M3.0 | 109 km | 10 km |
| Aug 27, 1992 | 33 km NNE of Isle of Islay, United Kingdom | M2.7 | 110 km | 10 km |
| Nov 1, 2017 | 2 km NNW of Tarbert, United Kingdom | M2.6 | 114 km | 7 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tsunami History
1 tsunami recorded within 500 km.
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 720 | HEBRIDES (SCOTLAND) | Questionable Earthquake | — | — | 134 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 40°F (5°C) | 5.9 in | Coldest, Wettest |
| February | 40°F (5°C) | 4.6 in | |
| March | 43°F (6°C) | 4.6 in | |
| April | 45°F (7°C) | 3.3 in | |
| May | 50°F (10°C) | 3.0 in | Driest |
| June | 54°F (12°C) | 3.2 in | |
| July | 58°F (14°C) | 3.5 in | Warmest |
| August | 58°F (14°C) | 4.3 in | |
| September | 54°F (12°C) | 4.7 in | |
| October | 50°F (10°C) | 5.7 in | |
| November | 44°F (7°C) | 5.8 in | |
| December | 42°F (5°C) | 5.8 in |
Coleraine has a seasonal temperature swing of 17°F / from 40°F in January to 58°F in July. Total annual precipitation is 54.3 inches, with January being the wettest month (5.9") and May the driest (3.0").