Navigation Beacon on headland to E. of entry to Porthgain Harbour is a Grade II listed building in the Pembrokeshire Coast National Park local planning authority area, Wales. First listed on 4 February 1991. Navigation beacon.
Navigation Beacon on headland to E. of entry to Porthgain Harbour
- WRENN ID
- empty-pilaster-moss
- Grade
- II
- Local Planning Authority
- Pembrokeshire Coast National Park
- Constituency
- Ceredigion Preseli MP: Ben Lake (PC)
- Country
- Wales
- Date first listed
- 4 February 1991
- Type
- Navigation beacon
- Address
- Navigation Beacon on headland to E. of entry to Porthgain Harbour, Llanrhian
- OS grid reference
- SM 814 327
- Coordinates
- 51.95032, -5.18217
- Source
- Cadw listing
Description
This is a tall navigation beacon, likely built in the mid-19th century, located on the headland to the east of the entrance to Porthgain Harbour. It stands about 3.5 meters high and has a circular base. The beacon has a bulbous cone shape that tapers to a point and is constructed from rough rubble stone. It is one of a pair of beacons that mark the position of the harbour entrance at Porthgain.
Local climate
Navigation Beacon on headland to E. of entry to Porthgain Harbour sits in a wetter-than-average part of the UK, with an average of 1,050 mm of rain a year. This makes it wetter than 85% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 96% of listed buildings.
It experiences an average of 3 freeze-thaw cycles a year, fewer than 99% of listed buildings. Of these, 1 follows 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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