Siop Gwilym is a Grade II listed building in the Gwynedd local planning authority area, Wales. First listed on 28 July 1989. Shop.
Siop Gwilym
- WRENN ID
- white-mortar-spindle
- Grade
- II
- Local Planning Authority
- Gwynedd
- Constituency
- Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
- Country
- Wales
- Date first listed
- 28 July 1989
- Type
- Shop
- Address
- Siop Gwilym, 3 Market Square, Pwllheli
- OS grid reference
- SH 374 351
- Coordinates
- 52.88945, -4.4168
- Source
- Cadw listing
Description
Siop Gwilym is a 2-storey building with part rendered fronts. The building features a gable on No 3, while No 4 has been modified to include a modern attic facing southwest. No 3 has a sash window and a 6-panel loading door on the first floor, along with a simple shop front below. No 4 has a modern window set in a 19th-century opening with a decorated architrave, and its shop front below is adorned with a dentil cornice.
Local climate
Siop Gwilym 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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- No EPC on record for this property
- No sale records on file
- No related consent applications matched
- 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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