Newcastle Castle is a Grade II* listed building in the Bridgend local planning authority area, Wales. First listed on 29 September 1986. Castle.

Newcastle Castle

WRENN ID
under-thatch-raven
Grade
II*
Local Planning Authority
Bridgend
Constituency
Bridgend MP: Chris Elmore (Lab)
Country
Wales
Date first listed
29 September 1986
Type
Castle
OS grid reference
SS 902 800
Coordinates
51.50893, -3.58321
Source
Cadw listing

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

Description

Newcastle Castle is a Grade II* listed building with a polygonal plan. It features a curtain wall that includes west and south towers, with a natural cliff providing defense to the east. The structure is made of Sutton stone and has coursed rubble facing stones, some of which have been removed or lost, particularly on the eastern side. The southern side retains substantial amounts of masonry, including a rectangular tower that has 2-light windows with voussoir relieving arches. This tower is flanked by a fine raised gateway dating from around 1175 to 1180, which is the most complete of its kind in Glamorgan. The gateway features a blind tympanum situated between semicircular and segmental arches, with the latter being billet moulded, as are the jambs beside Romanesque shafts that support roll moulding.

Additionally, there are remains of the keep to the west and the footings of the hall range to the east. The site is designated as a Scheduled Ancient Monument GM063.

Local climate

Newcastle Castle sits in one of the wettest parts of the UK, with an average of 1,190 mm of rain a year. This makes it wetter than 91% 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 18 freeze-thaw cycles a year, fewer than 83% of listed buildings. Of these, 6 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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