Ffynnon Trwyn'r nant is a Grade II listed building in the Gwynedd local planning authority area, Wales. First listed on 8 March 1999. Well.
Ffynnon Trwyn'r nant
- WRENN ID
- hallowed-ledge-nettle
- Grade
- II
- Local Planning Authority
- Gwynedd
- Constituency
- Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
- Country
- Wales
- Date first listed
- 8 March 1999
- Type
- Well
- Address
- Ffynnon Trwyn'r nant, Llanbedrog, Pwllheli
- OS grid reference
- SH 325 318
- Coordinates
- 52.85808, -4.48839
- Source
- Cadw listing
Description
Ffynnon Trwyn'r nant is a rectangular enclosure made of cast iron railings, with its base set in concrete. There is an opening on the longer west side that leads down four steps, which then turn north to another flight of four steps that descend to a square lower area. At this lower area, the upwelling of water is contained in a low arched recess in the west wall. On the outer side of the enclosure, there is a plaque that reads "C DAN....GYNLLUN CREU GWAI.... Y CYNGON YN YSTOD 1877."
Local climate
Ffynnon Trwyn'r nant sits in one of the wettest parts of the UK, with an average of 1,660 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 3 freeze-thaw cycles 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 0.3°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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