Enclosure Walls at South Stack Lighthouse is a Grade II listed building in the local planning authority area, Wales. First listed on 29 March 1996. Enclosure walls.
Enclosure Walls at South Stack Lighthouse
- WRENN ID
- tired-bailey-river
- Grade
- II
- Local Planning Authority
- Constituency
- Ynys Môn MP: Llinos Medi (PC)
- Country
- Wales
- Date first listed
- 29 March 1996
- Type
- Enclosure walls
- Address
- Enclosure Walls at South Stack Lighthouse, South Stack Island, Trearddur, Isle of Anglesey
- OS grid reference
- SH 202 822
- Coordinates
- 53.307, -4.69879
- Source
- Cadw listing
Description
The enclosure walls at South Stack Lighthouse are low, white-washed rendered rubble walls that define a series of enclosures related to the lighthouse on South Stack Island. These walls protect the access path to the lighthouse from the bridge on the north side and outline the edge of the cliffs on the south side of the island. Additionally, the former garden or allotment for the lighthouse keepers' accommodation is enclosed on the south side of the lighthouse buildings. To the southwest of the lighthouse, parallel walls surround a flight of steps that leads down to a circular platform. This platform is likely the site of a low-level light intended for use when the higher light was obscured by fog, and it may have replaced an earlier low light established in 1832, which was a wooden lantern operating on an inclined railway.
Local climate
Enclosure Walls at South Stack Lighthouse sits in a wetter-than-average part of the UK, with an average of 1,030 mm of rain a year. This makes it wetter than 83% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 93% of listed buildings.
It experiences an average of 8 freeze-thaw cycles a year, fewer than 93% of listed buildings. Of these, 3 follow at least 1 mm of rain in the preceding 48 hours. Average temperatures at this location have risen by 0.3°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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- Former Oil Store at South Stack Lighthouse
- Storehouse at South Stack Lighthouse
- South Stack Lighthouse and former keepers' accommodation
- Bridge Towers at South Stack Lighthouse
- Ellen's Tower (Twr Ellin)
- Tan-y-Cytiau
- Ffynnon y Wrach
- Former powder magazine for fog signalling station and enclosure walls
- Cottage on corner of Pentre Pella (including Foregardem Wall)
- Gunpowder Magazine