Church of St Deiniol is a Grade II listed building in the Ceredigion local planning authority area, Wales. First listed on 21 January 1964. School.

Church of St Deiniol

WRENN ID
outer-storey-pigeon
Grade
II
Local Planning Authority
Ceredigion
Constituency
Ceredigion Preseli MP: Ben Lake (PC)
Country
Wales
Date first listed
21 January 1964
Type
School
Address
Church of St Deiniol, Llanddeiniol, Llanrhystyd
OS grid reference
SN 560 721
Coordinates
52.32842, -4.11387
Source
Cadw listing

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

Description

The Church of St Deiniol is a Grade II listed building featuring squared rubble stone with ashlar dressings and slate roofs adorned with red terracotta ridges. It includes a nave roof with coped gables and an eastern cross-finial, a west tower, a nave, and a round-apsed chancel. The tower is partly clasped by the west end of the nave and has a plain square stage that reaches the height of the nave ridge, followed by a slightly setback bell-stage with chamfered pointed openings on each side and a corbelled shelf beneath the battlements. The west door is made of ashlar and has a cusped head with a hoodmould. The nave features lancet windows with cusped heads and hoodmoulds, with one window on each side at the west end and paired windows along the longer sides. The apse has a high battered undercroft with a shoulder-headed east door, and the walling above is set back with ashlar sills and eaves courses. There are five windows in the curved apse, providing extra light on the straight south side; the main lights are ogee-headed and cusped, with three foiled circles above.

Inside, the chancel arch is made of ashlar and rests on corbelled shafts, with ashlar rear arches to the windows. The tower projects into the nave and features a cusped door. The ringing-floor shows evidence of being open on three sides, possibly indicating a former gallery, and small Gothic-panelled cast-iron piers are set deeply into the eastern face. The north and south doors of the tower have decorative stained glass, and there is a Gothic vestry screen with similar Arts and Crafts glazing. The nave boasts a fine seven-sided panelled roof, while the chancel has a wood-ribbed curved roof and an ashlar wall recess to the south. Three stained-glass windows from 1883 are by Clayton & Bell, and there are marble plaques dedicated to the Reverend I Griffith (who died in 1839) and various members of the Richards family.

Local climate

Church of St Deiniol sits in one of the wettest parts of the UK, with an average of 1,300 mm of rain a year. This makes it wetter than 95% 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 25 freeze-thaw cycles a year, fewer than 73% of listed buildings. Of these, 12 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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