Capel Siloh is a Grade II listed building in the Gwynedd local planning authority area, Wales. First listed on 31 March 1999. Chapel. 3 related planning applications.
Capel Siloh
- WRENN ID
- noble-passage-laurel
- Grade
- II
- Local Planning Authority
- Gwynedd
- Constituency
- Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
- Country
- Wales
- Date first listed
- 31 March 1999
- Type
- Chapel
- Address
- Capel Siloh, Chwilog, Pwllheli, Llanystumdwy, LL53 6SH
- OS grid reference
- SH 432 384
- Coordinates
- 52.92042, -4.33227
- Source
- Cadw listing
Description
Capel Siloh is a chapel featuring a rendered and lined-out exterior, with raised quoins and dressings, pebbledash in the pediment, and a slate roof. The gabled entrance faces the street and includes a rusticated rendered plinth and a central round-headed entrance. This entrance is flanked by a pair of four-panelled doors and a fanlight, all set within a projecting portico supported by paired Corinthian pilasters. The door is framed by an arched architrave with a keystone that rises to a moulded cornice. On either side of the entrance, there are tall pilastered round-headed windows with similar detailing, which rise from a moulded sill band and feature margin glazing. Above the portico pediment, there are two smaller windows set in a recessed panel. The string course at the base of the pediment breaks back over this panel, and an architraved arch at the centre bears the inscription SILOH / 1869.1897. The chapel is also adorned with moulded raking pediments.
The forecourt is enclosed by railings on a low rendered wall, which has central square piers that align with the street. The chapel was not accessible at the time of inspection.
Local climate
Capel Siloh sits in one of the wettest parts of the UK, with an average of 1,670 mm of rain a year. This makes it wetter than 99% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 99% of listed buildings.
It experiences an average of 4 freeze-thaw cycles a year, fewer than 98% of listed buildings. Of these, 1 follows 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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- Full EPC report — heating system, energy costs, size, glazing, construction etc.
- Sale history — 1 transaction since 2021
- Related listed building consents — 3 applications
- 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
Matched applications, energy data and sale records are assembled automatically and may contain errors. Flag incorrect data.
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