Satellite: Sentinel-2 cloudless 2016 by EOX (CC BY 4.0). Outline and points © OpenStreetMap contributors / Natural Earth. North up.
In numbers
18.2km²
Area
36km
Coastline
16m
Highest point
514
People
15°C
Warmest sea
August
715km
To the mainland
When to go to Arranmore
Good all year round.
The sea is warmest in August (15 °C) and coolest in February (8 °C). The water never reaches 21 °C: bring a wetsuit.
Averages 1991–2020. Sea: NOAA OISST, the water within 35 km of the coast. Air, rain and sun: NASA POWER. Best months weigh warm afternoons (23–30 °C), sea of 24 °C or more and few wet days.
Island in Ireland
Arranmore is an island in Ireland. It covers 18.2 km², with 36 km of coastline. Its highest point rises to 16 m. About 514 people live on it. The nearest mainland is 715 km away.
Getting there
- Donegal Airport (CFN)nearest airport with scheduled flights · 14 km in a straight lineCar hire at CFN airport (Donegal)Discover Cars · Affiliate link↗
- FerriesFerry Arranmore
- 715 km from the mainlanddistance to the nearest continental coast
Plan the trip
Ferries, stays and things to do
Some links above are affiliate links: if you book through them we may earn a commission, at no extra cost to you. It never changes what the data on this page says.
On the island
What you find on Arranmore.
- 10beachesAn Trá Dhearg, Tracashel and 8 more
- 1viewpoints
- 1lighthousesAranmore Lighthouse
- 1ferry terminals
- 4named peaksCluidaniller West Top, Frenchman's Hill, Cronagarn and 1 more
- 6ruins and archaeological sites
- 1waymarked walking routesArranmore Way
- 1campsitesArranmore Holiday Village
- 4hotels, guesthouses and apartments
- 1restaurants, cafés and bars
Counted in OpenStreetMap, the map anyone can edit, inside the island's outline. A low number may only mean nobody has mapped it yet.
The shape of the land.
On average the island stands 104 m above the sea. 98 % of it is below 200 m.
- 24 %0–50 m
- 73 %50–200 m
- 2 %200–500 m
Share of the island's area in each altitude band, from the Copernicus DEM (30 m, read at 30–240 m on large islands).
Size, for real
Next to islands you may know.
5 km
All outlines drawn to the same scale (Natural Earth and OpenStreetMap).
Month by month
The weather on the island.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Afternoon high (°C) | 9 | 8 | 9 | 10 | 12 | 14 | 15 | 16 | 15 | 13 | 11 | 9 |
| Night low (°C) | 6 | 6 | 6 | 8 | 10 | 12 | 13 | 14 | 13 | 11 | 9 | 7 |
| Sea (°C) | 9 | 8 | 8 | 9 | 11 | 13 | 15 | 15 | 15 | 13 | 12 | 10 |
| Rain (mm) | 158 | 121 | 108 | 80 | 95 | 99 | 114 | 126 | 113 | 142 | 160 | 163 |
| Wet days | 23 | 20 | 20 | 17 | 16 | 18 | 22 | 22 | 20 | 22 | 24 | 23 |
| Sun h/day | 0.6 | 2.0 | 3.8 | 6.3 | 7.4 | 6.7 | 6.0 | 5.7 | 4.2 | 2.7 | 1.0 | 0.3 |
| Wind (km/h) | 36 | 34 | 31 | 26 | 25 | 23 | 23 | 25 | 28 | 31 | 33 | 35 |
Averages 1991–2020 for the ~55 km NASA POWER cell over the island; the sea from NOAA OISST.
Recent years
Warmer and cooler years at sea.
Each month's sea temperature compared with its 1991–2020 average, in degrees.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2020 | ±0.0 | +0.2 | +0.1 | +0.3 | +0.4 | −0.2 | −0.8 | ±0.0 | +0.1 | ±0.0 | −0.1 | +0.1 |
| 2021 | −0.1 | ±0.0 | +0.4 | +0.3 | ±0.0 | −0.1 | +1.2 | +0.7 | +1.1 | +0.4 | +0.4 | +0.3 |
| 2022 | +0.4 | +0.4 | +0.7 | +0.7 | +1.0 | +0.3 | ±0.0 | +0.4 | +1.1 | +0.6 | +0.9 | +0.6 |
| 2023 | +0.4 | +0.6 | +0.6 | +0.7 | +1.5 | +2.8 | +1.4 | +0.9 | +1.2 | +1.0 | +0.9 | +0.5 |
| 2024 | +0.3 | +0.8 | +0.7 | +0.7 | +1.6 | −0.1 | −0.4 | −0.6 | +0.1 | ±0.0 | +0.3 | +0.3 |
| 2025 | +0.7 | +0.6 | +0.9 | +1.2 | +2.3 | +0.7 | +0.9 | +1.1 | +0.3 | +0.4 | +0.6 | +0.3 |
+1 warmer than usual −1 cooler than usual
Photos
Seen by visitors.
Nearby
More islands nearby.
Tory Island
Ireland3.6 km²62 m36 km away
IrelandIreland84,421 km²1,039 m186 km away
Achill IslandIreland148 km²688 m150 km away
Islay
United Kingdom615 km²491 m173 km away
Rathlin IslandUnited Kingdom14 km²136 m152 km away
IonaUnited Kingdom8.5 km²97 m200 km away
TireeUnited Kingdom79 km²141 m198 km away
ColonsayUnited Kingdom41 km²135 m189 km awayAbout these numbers
| Names, area, population | Wikidata (Q2271120) · CC0 |
|---|---|
| Outline | © OpenStreetMap contributors · ODbL |
| Sea temperature | NOAA OISST v2.1 · 1991–2020 |
| Climate | NASA POWER · 1991–2020 |
| Relief, 3D model | Copernicus DEM GLO-30 · © DLR e.V., © Airbus Defence and Space GmbH, Copernicus/ESA |
| Beaches, ports, lighthouses, trails | © OpenStreetMap contributors · ODbL |
| Towns | GeoNames · CC BY 4.0 |
| Images | EOX Sentinel-2 cloudless 2016 · CC BY 4.0; Wikimedia Commons |
Every figure is an average, an estimate or a count from a public dataset. Licences and methods: data sources.
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