All Countries
Weather & Climate in Isle of Arran, United Kingdom
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Isle of Arran experiences four distinct seasons with an average annual temperature of 47°F (9°C). Winters average 40°F in January while summers reach 57°F in July / relatively mild seasonal variation. The area gets 207 sunny days per year. Annual precipitation totals 70.9 inches (wetter than the 38-inch national average). The city sits at an elevation of 942 feet.
Temperature
40°F Jan (4°C)
57°F Jul (14°C)
| Annual Average | 47.3°F |
| 12% below US avg | |
| January Average | 40°F (4°C) |
| July Average | 57°F (14°C) |
| Sunny Days | 207 days/yr |
Geography
| Elevation | 942 ft (287 m) |
| Area | 732.0 sq mi (1,895.9 km²) |
| Population Density | 7/sq mi |
| Coordinates | 55.5815°N, 5.2123°W |
| Timezone | Europe/London |
Precipitation & Snow
Air Quality
Earthquake History
14 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.8.
| Aug 4, 2017 | 31 km NE of Tobermory, United Kingdom | M3.8 | 143 km | 7 km |
| May 3, 1998 | Scotland, United Kingdom | M3.5 | 74 km | 15 km |
| Jan 23, 2011 | 28 km NE of Tobermory, United Kingdom | M3.5 | 142 km | 16 km |
| Jan 26, 1990 | 34 km N of Isle of Islay, United Kingdom | M3.0 | 87 km | 10 km |
| Jun 20, 2003 | 12 km NNW of Balfron, United Kingdom | M3.0 | 82 km | 5 km |
| May 18, 2013 | 27 km NE of Tobermory, United Kingdom | M2.9 | 136 km | 10 km |
| May 13, 2001 | 3 km W of Locharbriggs, United Kingdom | M2.9 | 113 km | 12 km |
| Jun 20, 2003 | 14 km NNW of Balfron, United Kingdom | M2.8 | 82 km | 5 km |
| Aug 27, 1992 | 33 km NNE of Isle of Islay, United Kingdom | M2.7 | 74 km | 10 km |
| Mar 7, 1998 | 13 km E of Oban, United Kingdom | M2.7 | 92 km | 9 km |
| Nov 30, 1997 | 4 km NNE of Kippen, United Kingdom | M2.7 | 94 km | 10 km |
| Nov 1, 2017 | 2 km NNW of Tarbert, United Kingdom | M2.6 | 36 km | 7 km |
| Jun 20, 2003 | 12 km NNW of Balfron, United Kingdom | M2.5 | 82 km | 4 km |
| Jan 9, 1990 | 29 km W of Aberfeldy, United Kingdom | M2.5 | 130 km | 10 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 | — | — | 112 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 40°F (4°C) | 8.3 in | Wettest |
| February | 39°F (4°C) | 5.4 in | Coldest |
| March | 41°F (5°C) | 6.6 in | |
| April | 45°F (7°C) | 4.0 in | |
| May | 50°F (10°C) | 3.7 in | Driest |
| June | 54°F (12°C) | 3.9 in | |
| July | 57°F (14°C) | 4.4 in | Warmest |
| August | 57°F (14°C) | 5.3 in | |
| September | 53°F (12°C) | 6.6 in | |
| October | 48°F (9°C) | 7.3 in | |
| November | 44°F (6°C) | 7.6 in | |
| December | 40°F (5°C) | 7.9 in |
Isle of Arran has a seasonal temperature swing of 18°F / from 39°F in February to 57°F in July. Total annual precipitation is 70.9 inches, with January being the wettest month (8.3") and May the driest (3.7").