Ffynnon Aelrhiw is a Grade II listed building in the Gwynedd local planning authority area, Wales. First listed on 19 October 1971. School.
Ffynnon Aelrhiw
- WRENN ID
- dreaming-rafter-birch
- Grade
- II
- Local Planning Authority
- Gwynedd
- Constituency
- Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
- Country
- Wales
- Date first listed
- 19 October 1971
- Type
- School
- Address
- Ffynnon Aelrhiw, Rhiw, Pwllheli, Aberdaron
- OS grid reference
- SH 233 284
- Coordinates
- 52.82481, -4.62269
- Source
- Cadw listing
Description
Ffynnon Aelrhiw is a holy well featuring a small square pool with low steps on the north side and higher steps on the east side, which has an outlet for water beneath. The well is surrounded by a rubble and earth bank that creates a small enclosure, with an entry point on the north side. The exact date of the well is uncertain.
Local climate
Ffynnon Aelrhiw sits in one of the wettest parts of the UK, with an average of 1,600 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 1 freeze-thaw cycle a year, fewer than 99% 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 0.2°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
Matched applications, energy data and sale records are assembled automatically and may contain errors. Flag incorrect data.
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