Flannan IslesFlannan Isles at a Glance
About Flannan Isles
The Flannan Isles are a small, remote archipelago in the Outer Hebrides of Scotland, noted for seabird colonies and a lighthouse on the largest island, Eilean Mòr. The islands are uninhabited apart from the automated lighthouse installation.
Visitors (typically by private boat or organised trips) see steep cliffs, breeding seabirds and the lighthouse complex on Eilean Mòr; landing is limited and weather dependent. The islands are valued for wildlife and remoteness rather than visitor facilities.
A manned lighthouse was constructed on Eilean Mòr at the end of the 19th century; in December 1900 three keepers vanished under mysterious circumstances, an event that has become the islands’ best-known historical incident. The lighthouse is now automated and the islands have been important bird sanctuaries.
The Flannan Isles lie off the west coast of the Outer Hebrides (western Scotland), several tens of kilometres west of the Isle of Lewis and reachable only by sea in suitable conditions.
- 1900 lighthouse mystery: A lighthouse was built on Eilean Mòr at the turn of the 20th century and the islands are famous for the unexplained 1900 disappearance of three lighthouse keepers.
What to See#
- Eilean Mòr and lighthouse: Eilean Mòr, the largest island and site of the Flannan Isles lighthouse; its cliffs host the main bird colonies and the lighthouse complex.
- Outlying skerries: Smaller surrounding skerries and islets that form seabird nesting sites and offshore hazards for shipping in the Outer Hebrides.
Best Time to Visit Flannan Isles
Best attempted in the summer months when sea conditions are most forgiving; even then expect rough weather and limited landing opportunities.
Weather & Climate near Flannan Isles
Continental climate with cool summers (peaking in August) and cold winters (coldest in March). Temperatures range from 5°C to 15°C. Abundant rainfall (1541 mm/year), wettest in October.
| Month | Comfort | Temp | Feels | Rain | Sky | Humidity | Wind | UV | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | Poor | 5° - 9° | 3° | 160 mm | overcast | 80% | 8.8 m/s | 0.0 low | 6.9h |
| February | Poor | 5° - 9° | 2° | 126 mm | overcast | 80% | 8.6 m/s | 0.1 low | 9.1h |
| March | Poor | 5° - 8° | 2° | 144 mm | overcast | 81% | 8.3 m/s | 0.2 low | 11.6h |
| April | Poor | 5° - 9° | 3° | 96 mm | overcast | 82% | 7.2 m/s | 0.6 moderate | 14.2h |
| May | Poor | 7° - 11° | 6° | 81 mm | overcast | 84% | 6.5 m/s | 0.9 moderate | 16.6h |
| June | Acceptable | 9° - 13° | 11° | 78 mm | overcast | 87% | 6.4 m/s | 1.2 high | 17.9h |
| July | Acceptable | 11° - 14° | 13° | 92 mm | overcast | 87% | 6.0 m/s | 1.1 high | 17.2h |
| August | Acceptable | 12° - 15° | 13° | 108 mm | overcast | 86% | 5.9 m/s | 0.8 moderate | 15.1h |
| September | Poor | 11° - 14° | 12° | 147 mm | overcast | 85% | 7.0 m/s | 0.4 low | 12.6h |
| October | Poor | 9° - 12° | 10° | 180 mm | overcast | 82% | 7.8 m/s | 0.1 low | 10.0h |
| November | Poor | 7° - 11° | 5° | 172 mm | overcast | 81% | 8.0 m/s | 0.0 low | 7.6h |
| December | Poor | 6° - 10° | 4° | 157 mm | overcast | 80% | 8.2 m/s | 0.0 low | 6.2h |
How to Get to Flannan Isles
There are no regular public ferries to the Flannan Isles. Access is possible only by private charter from ports in the Outer Hebrides or mainland Scotland, subject to sea and weather conditions; landing is often restricted to protect wildlife.
Tips for Visiting Flannan Isles
- The Flannan Isles are accessible only by private charter from the Outer Hebrides or mainland Scotland; crossings are weather‑dependent and infrequent.
- Respect signs and local restrictions - the islands are fragile seabird colonies and landing is regulated.
- Read the contemporary lighthouse logs and visitor accounts beforehand - the 1900 disappearance of the keepers is the islands' enduring shadow.