Narbeth Castle is a Grade I listed building in the Pembrokeshire local planning authority area, Wales. First listed on 25 September 1951. Castle (ruins).

Narbeth Castle

WRENN ID
blind-chancel-ivy
Grade
I
Local Planning Authority
Pembrokeshire
Constituency
Mid and South Pembrokeshire MP: Henry Tufnell (Lab)
Country
Wales
Date first listed
25 September 1951
Type
Castle (ruins)
Address
Narbeth Castle, Narberth
OS grid reference
SN 109 143
Coordinates
51.79616, -4.74256
Source
Cadw listing

Also on this page: flood risk · radon risk · weather exposure · detailed attributes ↓

Description

Narbeth Castle is a rectangular site featuring a half-moon outwork that covers the southern front. The ruins include two quarter-engaged drum towers with battered bases. The southeast tower, which served as a bakehouse and chapel tower, has an aumbry at the first storey and a window opening at the second storey. The southwest tower remains intact up to three storeys, containing a larder with two chambers above. The second floor openings feature pointed arches, while the ground floor openings have broad internal splays. To the north, a fragment of wall rises to the first storey height, indicating the former kitchens with a hall above. The ground floor has cambered openings that have been modernly blocked, and there are traces of arched openings at the first floor level, along with corbels.

On the west side of the enclosure, there are remnants of a curtain wall with two semicircular bastions, one of which includes a drain.

To the east, there is a vaulted cellar with three openings, the center of which has been enlarged to form a doorway. The original door is located at the southern end but has undergone modern alterations. A section of wall above shows evidence of a window that once belonged to the great chamber.

Also on the east side, there are remains of a tower with a battered base below the stringcourse. Evidence suggests the presence of two garderobes with chutes at the angle of the curtain, as well as flues leading to the first and second floors, with a buttery and two chambers above.

The site of the Great Tower, along with its forebuilding and adjoining gatehouse, is located at the northern end of the site but is obscured. The castle is designated as a Scheduled Ancient Monument.

Local climate

Narbeth Castle sits in one of the wettest parts of the UK, with an average of 1,170 mm of rain a year. This makes it wetter than 90% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 95% of listed buildings.

It experiences an average of 13 freeze-thaw cycles a year, fewer than 88% of listed buildings. Of these, 5 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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