Ffynnon y Wrach is a Grade II listed building in the Isle of Anglesey local planning authority area, Wales. First listed on 30 June 1998. Well building.
Ffynnon y Wrach
- WRENN ID
- sacred-dormer-violet
- Grade
- II
- Local Planning Authority
- Isle of Anglesey
- Constituency
- Ynys Môn MP: Llinos Medi (PC)
- Country
- Wales
- Date first listed
- 30 June 1998
- Type
- Well building
- Address
- Ffynnon y Wrach, North Stack, Trearddur
- OS grid reference
- SH 223 822
- Coordinates
- 53.30746, -4.66812
- Source
- Cadw listing
Description
Ffynnon y Wrach is an octagonal well building featuring a domed roof. The walls are constructed of rubble with brick angle quoins, and there is a plinth made of similar materials. The building has a rendered stepped cornice beneath a cement rendered concrete domed roof. The cornice is interrupted by the cast iron lintel and jambs of the single doorway on the northwest face, each adorned with recessed panels and stressed surrounds.
Local climate
Ffynnon y Wrach 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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