St John's Priory Precinct Wall or Nun's Walk is a Grade II listed building in the Carmarthenshire local planning authority area, Wales. First listed on 19 May 1981. Wall.
St John's Priory Precinct Wall or Nun's Walk
- WRENN ID
- leaning-hearth-spindle
- Grade
- II
- Local Planning Authority
- Carmarthenshire
- Constituency
- Caerfyrddin MP: Ann Davies (PC)
- Country
- Wales
- Date first listed
- 19 May 1981
- Type
- Wall
- Address
- St John's Priory Precinct Wall or Nun's Walk, Carmarthen
- OS grid reference
- SN 418 205
- Coordinates
- 51.86075, -4.2976
- Source
- Cadw listing
Description
The St John's Priory Precinct Wall, also known as Nun's Walk, is a boundary wall made of stone rubble with medieval foundations located below ground. It forms the northwest boundary of the former St John's Priory and was excavated in 1979. The wall runs northeast from the former Priory Gateway. Above ground, the stone wall features some large boulders, with the lower courses believed to date back to the medieval period. The wall rises to approximately ten feet high, although it is lower at the northeast end. At the southwest end, it is attached to the gable end of No 6 Old Priory Road. The northeast half of the wall is in a state of disrepair and runs along the rear of outbuildings.
Local climate
St John's Priory Precinct Wall or Nun's Walk sits in one of the wettest parts of the UK, with an average of 1,270 mm of rain a year. This makes it wetter than 93% 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 30 freeze-thaw cycles a year, fewer than 64% of listed buildings. Of these, 14 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.
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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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