Gasaigh lighthouse is a Grade C listed building in the Na h-Eileanan Siar local planning authority area, Scotland. First listed on 11 December 2020. Light beacon.
Gasaigh lighthouse
- WRENN ID
- tenth-plaster-storm
- Grade
- C
- Local Planning Authority
- Na h-Eileanan Siar
- Constituency
- Na h-Eileanan an Iar MP: Torcuil Crichton (Lab)
- Country
- Scotland
- Date first listed
- 11 December 2020
- Type
- Light beacon
- OS grid reference
- NF 802 188
- Coordinates
- 57.14889, -7.28976
- Source
- Historic Environment Scotland listing
Description
Gasay lighthouse is a solar-powered minor light beacon built in 1985. It features a square concrete base and a 6-metre tall square aluminium open lattice tower. The tower is topped with an open gallery that holds a small solar-powered lantern, and it has white glass-reinforced plastic panels on the east, north, and west sides. The automatic LED lights flash white and red every five seconds, with a range of seven nautical miles for the white light and four nautical miles for the red light. Inside the aluminium lattice frame, there is a metal ladder leading up to the gallery, and solar panels are mounted on the southern side of the lighthouse.
The Northern Lighthouse Board constructed the current Solar Powered Lattice Aluminium Tower (SPLAT) in 1985 as part of a shift from older minor light designs to more cost-effective gas-powered and solar-powered options. Before this, there was no navigational light on Gasay. A similar SPLAT lighthouse was also established in 1985 on the nearby island of Calvay to replace an earlier light from 1891.
Local climate
Gasaigh lighthouse sits in one of the wettest parts of the UK, with an average of 1,460 mm of rain a year. This makes it wetter than 98% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 99% of listed buildings.
It averages fewer than one freeze-thaw cycle a year. Average temperatures at this location have risen by 0.2°C per decade since 1991.
Averages for 1991–2020; temperature trend 1991–2025. Figures describe the wider area (a grid cell of roughly 10 km), not the individual site. Contains modified Copernicus Climate Change Service information 2026.
More on this building
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- No EPC on record for this property
- No sale records on file
- No related consent applications matched
- Detailed attributes — period, style, materials, features
- Flood risk assessment
- Radon risk assessment
- Weather exposure and heating demand — rain and frost month by month and year by year, wind direction, solar and humidity
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