United KingdomIsland
Isle of Arran
428 km² rising to 874 m out of the Sea of the Hebrides.
Satellite: Sentinel-2 cloudless 2016 by EOX (CC BY 4.0). Outline and points © OpenStreetMap contributors / Natural Earth. North up.
In numbers
428km²
Area
103km
Coastline
874m
Highest point
Goat Fell
4,626
People
15°C
Warmest sea
August
656km
To the mainland
When to go to Isle of Arran
Good all year round.
The sea is warmest in August (15 °C) and coolest in March (7 °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.
The largest island in the Firth of Clyde, Scotland
Isle of Arran is an island in United Kingdom. It covers 428 km², with 103 km of coastline. Its highest point, Goat Fell, rises to 874 m. About 4,626 people live on it. The nearest mainland is 656 km away.
Getting there
- Campbeltown Airport (CAL)nearest airport with scheduled flights · 32 km in a straight lineCar hire at PIK airport (Prestwick, South Ayrshire)Discover Cars · Affiliate link↗
- FerriesClaonaig to Lochranza, Ardrossan - Brodick, Lochranza - Tarbert (Winter Only), Troon - Brodick
- 656 km from the mainlanddistance to the nearest continental coast
Plan the trip
Ferries, stays and things to do
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On the island
What you find on Isle of Arran.
- 25beachesCleats Shore and 24 more
- 14viewpointsGoat Fell, Glenashdale Falls Platform 1, Glenashdale Falls Platform 2 and 11 more
- 4ferry terminalsLochranza Ferry Terminal, Brodick Ferry Terminal and 2 more
- 73named peaksGoat Fell, Caisteal Abhail, Beinn Tarsuinn and 70 more
- 8waterfallsGlenashdale Falls, Glenrosa Falls, Allt Mòr Waterfall and 5 more
- 2castles and fortsBrodick Castle, Lochranza Castle
- 72ruins and archaeological sitesMachrie Moor Stone Circle 2, Machrie Moor Stone Circle 3, Machrie Moor Stone Circle 1 and 69 more
- 4waymarked walking routesArran Coastal Way, Arran Coastal Way: Alternative via Goat Fell, Goatfell Trail and 1 more
- 11campsitesRunach Arainn, Seal Shore Camping, Lochranza Caravan and Campsite and 8 more
- 51hotels, guesthouses and apartments
- 27restaurants, 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.
Cross-checked with our atlases
Isle of Arran in our other atlases
Everything Coastya, Peakyas, Lakeyas and Cascadyas know about what lies inside Isle of Arran, each with its own numbers.
1lakeLakeyas
5waterfallsCascadyas
Largest lake
0.29km²
Loch Tanna
according to Lakeyas
Warmest lake
18.4°C
Loch Tanna
surface water, warmest month · according to Lakeyas
1 lakes
on Lakeyas, the lake atlas
- Loch Tanna0.29km²
Lakeyas is coming soonOpen Lakeyas ↗
5 waterfalls
on Cascadyas, the waterfall atlas
- Eas a' Chrannaig
- Eas Bàn
- Eas Geal
- Eas Mòr
- Easa Cumhang
Cascadyas is coming soonOpen Cascadyas ↗
The shape of the land.
On average the island stands 223 m above the sea. 48 % of it is below 200 m.
- 12 %0–50 m
- 36 %50–200 m
- 47 %200–500 m
- 5 %500–1,000 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.
20 km
All outlines drawn to the same scale (Natural Earth and OpenStreetMap).
Towns on the island
- Isle of Arran5,058 people
- Lamlash1,030 people
Month by month
The weather on the island.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Afternoon high (°C) | 7 | 6 | 8 | 10 | 13 | 15 | 17 | 16 | 15 | 12 | 9 | 7 |
| Night low (°C) | 4 | 3 | 4 | 5 | 8 | 10 | 12 | 12 | 11 | 9 | 6 | 4 |
| Sea (°C) | 8 | 7 | 7 | 8 | 10 | 12 | 14 | 15 | 14 | 13 | 11 | 10 |
| Rain (mm) | 132 | 99 | 90 | 69 | 81 | 92 | 105 | 120 | 101 | 136 | 132 | 131 |
| Wet days | 21 | 18 | 17 | 16 | 15 | 17 | 20 | 19 | 17 | 20 | 21 | 20 |
| Sun h/day | 0.7 | 2.2 | 3.8 | 5.7 | 6.6 | 5.7 | 5.4 | 4.6 | 3.8 | 2.3 | 1.3 | 0.5 |
| Wind (km/h) | 28 | 26 | 24 | 21 | 20 | 18 | 18 | 19 | 22 | 24 | 26 | 26 |
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 | +0.4 | +0.2 | +0.1 | +0.3 | +0.5 | +0.5 | ±0.0 | +0.1 | +0.4 | +0.4 | +0.6 | +0.6 |
| 2021 | +0.7 | −0.1 | ±0.0 | −0.1 | +0.1 | +0.9 | +2.3 | +1.4 | +1.4 | +1.2 | +0.7 | +0.7 |
| 2022 | +0.9 | +0.9 | +1.1 | +0.8 | +1.1 | +0.3 | −0.1 | +0.5 | +1.0 | +0.6 | +1.1 | +1.0 |
| 2023 | +1.2 | +1.1 | +1.1 | +1.0 | +1.4 | +1.7 | +0.7 | +0.8 | +1.4 | +0.9 | +0.8 | +0.9 |
| 2024 | +1.0 | +1.2 | +1.1 | +1.0 | +1.8 | −0.3 | −0.4 | −0.3 | +0.1 | +0.3 | +0.5 | +0.6 |
| 2025 | +1.0 | +0.8 | +1.0 | +1.3 | +1.9 | +0.8 | +0.8 | +0.5 | +0.4 | +0.2 | +1.0 | +0.6 |
+1 warmer than usual −1 cooler than usual
Photos
Seen by visitors.




Nearby
More islands nearby.
Isle of Bute
Islay
Jura
Rathlin Island
Isle of Mull
Colonsay
Isle of Man
IonaAbout these numbers
| Names, area, population | Wikidata (Q211873) · 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 |
| Beaches, mountains, lakes and waterfalls | Lakeyas, Cascadyas — Wikidata · CC0; © OpenStreetMap contributors · ODbL; GeoNames · CC BY 4.0; HydroLAKES (Messager et al. 2016) · CC BY 4.0, LakeTEMP (Korver et al. 2024) · CC BY 4.0 |
Every figure is an average, an estimate or a count from a public dataset. Licences and methods: data sources.
The family
Do you prefer beaches, lakes, mountains, waterfalls, islands, rivers or canyons?
Same idea, other landscapes: field atlases built on open data, month by month, in seven languages.