Caernarfon Castle P H is a Grade II listed building in the Isle of Anglesey local planning authority area, Wales. First listed on 25 July 1994. Castle.
Caernarfon Castle P H
- WRENN ID
- shadowed-transept-marsh
- Grade
- II
- Local Planning Authority
- Isle of Anglesey
- Constituency
- Ynys Môn MP: Llinos Medi (PC)
- Country
- Wales
- Date first listed
- 25 July 1994
- Type
- Castle
- Address
- Caernarfon Castle P H, Holyhead
- OS grid reference
- SH 245 826
- Coordinates
- 53.31202, -4.63452
- Source
- Cadw listing
Description
Caernarfon Castle is a two-storey building with an attic, featuring two windows. The walls are rendered, and it has a slate roof with a chimney on the left side. There are two dormers with flat roofs and horned sash windows. The other windows have shallow architraves and 4-paned horned sash glazing. The doorway is adorned with a moulded wooden cornice hood supported by slender columns, leading to a 4-panelled door. The left gable is plain, and there is a flat-roofed rear extension that includes a 4-pane horned sash window on the first floor and a boarded door.
Local climate
Caernarfon Castle P H sits in a wetter-than-average part of the UK, with an average of 1,030 mm of rain a year. This makes it wetter than 83% 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 8 freeze-thaw cycles a year, fewer than 93% of listed buildings. Of these, 3 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
- 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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