Arranmore Island
Donegal's largest inhabited island, a Gaeltacht community of a little under five hundred with cliffs, a lighthouse and a hard emigration history.
Updated 21 October 2026
Arainn Mhor lies about five kilometres off the west Donegal coast and has a population of a little under five hundred, making it the largest inhabited island in the county. Irish is the community language. The western and northern coasts are cliffed, rising to over a hundred metres, with a lighthouse on the north-western point and a looped walk running the exposed side; the eastern shore holds the harbour, the shops and most of the houses. The island's emigration history is unusually concentrated: so many people left for Beaver Island in Lake Michigan in the nineteenth century that the two places maintain a formal twinning and family connections that are still live. There are several pubs, a shop, a hostel and some accommodation. The ferry crossing is short but the sound is exposed and sailings cancel in swell.
Highlights
- The cliff coast - over a hundred metres on the western and northern sides.
- The lighthouse - on the north-western point, with a loop walk to it.
- The Gaeltacht community - a little under five hundred people, Irish-speaking.
- The Beaver Island link - the twinned Michigan community, still connected.
When to go
May to September for the weather and the ferry frequency. Winter sailings are reduced and cancel readily. Accommodation is limited - book before travelling.
Before you go
Ferries cancel in swell; allow for delays. Limited accommodation and shops, with seasonal opening. Cliff walks are unfenced and exposed. Roads on the island are narrow and a car is not really necessary.
Nearby
Burtonport is the mainland port; the Rosses and Gweedore are along the coast.
Key facts
Source: Wikidata, item Q2271120, read on 18 October 2026.
What to pack for Arranmore Island
Chosen from what this place is for. Tap a kit for the full checklist.
- Reef-safe sunscreen - High SPF that will not bleach the coral you are swimming over. Find on Amazon
- Quick-dry towel - A microfibre towel packs small and dries in minutes. Find on Amazon
- Water shoes - Protect your feet on rocky entries, hot sand and sea-urchin spines. Find on Amazon
- Dry bag - Keeps phone, cash and keys safe while you are in the water. Find on Amazon
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Opening times, ticket prices and seasonal closures change - check the official source before you go: official site.


