Monach Lighthouse, Shillay, Monach Islands is a Grade B listed building in the Na h-Eileanan Siar local planning authority area, Scotland. First listed on 5 October 1971. Lighthouse, keeper's house.
Monach Lighthouse, Shillay, Monach Islands
- WRENN ID
- peeling-tracery-cedar
- Grade
- B
- Local Planning Authority
- Na h-Eileanan Siar
- Constituency
- Na h-Eileanan an Iar MP: Torcuil Crichton (Lab)
- Country
- Scotland
- Date first listed
- 5 October 1971
- Type
- Lighthouse, keeper's house
- OS grid reference
- NF 592 627
- Coordinates
- 57.52585, -7.69466
- Source
- Historic Environment Scotland listing
Description
Monach Lighthouse, located on the Monach Islands, was designed by engineers David and Thomas Stevenson in 1864. It features a battered, circular lighthouse tower and a two-storey, three-bay keeper's house with a flat roof at its base. The structure is made of unpainted brick, with ashlar lintels and cills, and some openings adorned with ashlar dressings and brick relieving arches. A deep ashlar base course supports the tower.
The lighthouse has seven vertically-aligned arrowslit windows, with the third-level window set in a large blinded segmental-arched opening. An additional, offset eighth window is located above, adjacent to a band course and a jettied ironwork walkway with a parapet. At the top, the lantern features diagonal astragals and a finialled domed cap.
The keeper's house connects to the base of the tower and includes a rectangular-plan house with a single-storey flat-roofed wing on the right and a roofless lean-to wing on the left. There are blocked openings on each floor. The flat-coped ashlar stacks have a full complement of polygonal cans.
Surrounding the property are coped rubble boundary walls with square-section, pyramidally-coped ashlar gatepiers.
Local climate
Monach Lighthouse, Shillay, Monach Islands sits in one of the wettest parts of the UK, with an average of 1,450 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.
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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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