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Weather & Climate in Portrush, United Kingdom
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Portrush experiences four distinct seasons with an average annual temperature of 49°F (9°C). Winters average 41°F in January while summers reach 58°F in July / relatively mild seasonal variation. The area gets 248 sunny days per year, above the national average. Annual precipitation totals 48.4 inches (wetter than the 38-inch national average). The city sits at an elevation of 36 feet.
Temperature
41°F Jan (5°C)
58°F Jul (15°C)
| Annual Average | 48.9°F |
| 9% below US avg | |
| January Average | 41°F (5°C) |
| July Average | 58°F (15°C) |
| Sunny Days | 248 days/yr |
Geography
| Elevation | 36 ft (11 m) |
| Area | 1,043.6 sq mi (2,702.8 km²) |
| Population Density | 6/sq mi |
| Coordinates | 55.1959°N, 6.6493°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 | 103 km | 15 km |
| Jan 26, 1990 | 34 km N of Isle of Islay, United Kingdom | M3.0 | 102 km | 10 km |
| Aug 27, 1992 | 33 km NNE of Isle of Islay, United Kingdom | M2.7 | 104 km | 10 km |
| Nov 1, 2017 | 2 km NNW of Tarbert, United Kingdom | M2.6 | 108 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 | - | - | 127 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 41°F (5°C) | 5.4 in | Coldest, Wettest |
| February | 41°F (5°C) | 4.0 in | |
| March | 43°F (6°C) | 4.1 in | |
| April | 46°F (8°C) | 2.9 in | |
| May | 51°F (10°C) | 2.5 in | Driest |
| June | 55°F (13°C) | 2.8 in | |
| July | 58°F (15°C) | 3.1 in | Warmest |
| August | 58°F (15°C) | 3.8 in | |
| September | 55°F (13°C) | 4.3 in | |
| October | 50°F (10°C) | 5.2 in | |
| November | 45°F (7°C) | 5.2 in | |
| December | 43°F (6°C) | 5.1 in |
Portrush has a seasonal temperature swing of 17°F / from 41°F in January to 58°F in July. Total annual precipitation is 48.4 inches, with January being the wettest month (5.4") and May the driest (2.5").