Church of St John the Baptist is a Grade II listed building in the Vale of Glamorgan local planning authority area, Wales. First listed on 28 January 1963. Church.
Church of St John the Baptist
- WRENN ID
- twelfth-attic-rook
- Grade
- II
- Local Planning Authority
- Vale of Glamorgan
- Constituency
- Cardiff South and Penarth MP: Stephen Doughty (Lab)
- Country
- Wales
- Date first listed
- 28 January 1963
- Type
- Church
- Address
- Church of St John the Baptist, Sully
- OS grid reference
- ST 151 683
- Coordinates
- 51.40763, -3.22173
- Source
- Cadw listing
Description
The Church of St John the Baptist is a small medieval parish church featuring a plan that includes a nave, chancel, and a square unbuttressed west tower, which unusually incorporates the main entrance in its south wall. There is also a vestry extension at the northeast. The church is constructed of stone rubble with remnants of lime render, some ashlar dressings, and part roughcast, topped with a Welsh slate roof that has corbelled eaves.
The tower is topped with an embattled parapet on corbels and has two tiers of single slit openings for the tower chambers. The south doorway is pointed and chamfered, consisting of two orders, and there is a battered plinth. The south nave features two three-light square-headed windows with ogee-arched lights beneath a hood-mould, and polycarbonate external glazing. A stepped buttress is located at the southeast of the nave. The chancel includes a pointed-arched south priests' door with a hood that has head stops, and a southeast window in the Perpendicular style with cusped heads to its two lights. The east window, dating from the 19th century, is pointed-arched, three-light with roll-moulding to the mullions, and voussoirs. The east end is made of coursed rock-faced sandstone, while the vestry wing has a flat roof. The north side is roughcast and features two three-light 19th-century windows.
Entrance to the church is through the south door of the tower. The interior is mainly rendered, with exposed dressings and rubble masonry on the west wall. The roofs are boarded, with the nave supported by three deep arch-braced trusses featuring king posts and moulded tie beams, all in dark-stained wood. The pointed chancel arch lacks capitals. There are two fonts: one, dating from the mid-19th century, is elaborate and made of Caen stone with carved angels in Decorated foliage; the other is small, wooden, and in an unusual capstan shape on a stone plinth, likely from the 18th century. The chancel also contains a 13th-century trefoil-headed piscina with two roll-mouldings.
Local climate
Church of St John the Baptist sits in a wetter-than-average part of the UK, with an average of 1,090 mm of rain a year. This makes it wetter than 87% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 92% of listed buildings.
It experiences an average of 17 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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- No EPC on record for this property
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- 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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