Inishtrahull

Island Ireland's northernmost island with lighthouse and seabirds

Inishtrahull is Ireland’s northernmost island, with a lighthouse and seabird colonies. Boat trips from County Donegal bring birdwatchers and those interested in coastal geology and offshore views.

Main image

Inishtrahull is a small island off Malin Head on the north coast of County Donegal and represents the northernmost island feature of Ireland. The island includes a lighthouse complex and is largely uninhabited today.

The island is noted for its lighthouse buildings and seabird habitat rather than visitor facilities; landing is possible but weather-dependent and rarely serviced by regular ferries. Visitors typically approach by private boat or charter and should expect rough seas and limited landing points.

Historically the island supported a small permanent population and served as a navigational point for shipping; the lighthouse and ancillary buildings were maintained to support navigation and were automated in later decades. The island no longer has a resident community and is visited mainly for maintenance or wildlife observation.

Geographically it lies off Malin Head at the northern tip of County Donegal in the North Atlantic, marking the extreme north of the island of Ireland. The surrounding waters are open and exposed to Atlantic weather.

  • Northernmost point: Forms the northernmost inhabited island feature of Ireland and marks the northern extremity of the island of Ireland.
  • Access: Landings are exposed to Atlantic weather and are generally made only by private charter or experienced local operators.

What to See #

  • Lighthouse: Active lighthouse tower and associated keeper's buildings located on the island; the site is uninhabited outside maintenance visits.
Inishtrahull
55.4320, -7.2348

How to Get to Inishtrahull #

Inishtrahull lies off the north coast of County Donegal. Access requires private boat and suitable weather; the nearest mainland points are Malin Head and Buncrana. Landing is weather-dependent and often restricted for conservation and safety reasons.

Tips for Visiting Inishtrahull #

  • If landing is permitted, time trips with tidal patterns - the channel can become rough in poor weather.
  • Bring warm, windproof layers even in summer; the island's exposure makes conditions unpredictable.
  • Observe seabird colonies from a distance; many rookeries are legally protected and fragile.

Best Time to Visit Inishtrahull #

Summer offers the best chance for landing and wildlife viewing, though the Northern Irish seas remain cool and changeable.

Summer
June-August · 8-15°C (46-59°F)
Longest daylight and best weather for boat trips; seabird activity peaks.
Shoulder seasons
May & September · 6-12°C (43-54°F)
Quieter; weather more changeable.

Weather & Climate near Inishtrahull #

Climate
Temperature & Rainfall
Temperature Range
22°
Warmest Month
Coldest Month
Monthly Conditions

January

Weather

0.0
UV Index
Low
7.6h daylight

February

Weather

0.1
UV Index
Low
9.4h daylight

March

Weather

0.3
UV Index
Low
11.7h daylight

April

Weather

0.7
UV Index
Moderate
14.0h daylight

May

Weather

1.0
UV Index
High
16.0h daylight

June

Weather

1.2
UV Index
High
17.1h daylight

July

Weather

1.2
UV Index
High
16.6h daylight

August

Weather

0.9
UV Index
Moderate
14.8h daylight

September

Weather

0.5
UV Index
Moderate
12.6h daylight

October

Weather

0.2
UV Index
Low
10.3h daylight

November

Weather

0.1
UV Index
Low
8.1h daylight

December

Weather

0.0
UV Index
Low
6.9h daylight

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