Cornhill Wharf is a Grade II listed building in the Gwynedd local planning authority area, Wales. First listed on 1 April 1974. Wharf.
Cornhill Wharf
- WRENN ID
- old-pillar-tarn
- Grade
- II
- Local Planning Authority
- Gwynedd
- Constituency
- Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
- Country
- Wales
- Date first listed
- 1 April 1974
- Type
- Wharf
- Address
- Cornhill Wharf, Porthmadog
- OS grid reference
- SH 568 383
- Coordinates
- 52.92337, -4.13039
- Source
- Cadw listing
Description
Cornhill Wharf is an L-shaped quay constructed with large dressed stone blocks arranged in regular courses. It features battered sides and has three weathered stone mooring posts on the northwest side facing Cornhill. At the end of the northeast-southwest arm, there is a return wall leading to the slipway known as 'The Beach'. The northwest-southeast arm extends in front of the current Madoc Yacht Club and ends with stone steps. The Beach wall includes a later stone parapet.
Local climate
Cornhill Wharf sits in one of the wettest parts of the UK, with an average of 1,490 mm of rain a year. This makes it wetter than 98% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 97% of listed buildings.
It experiences an average of 32 freeze-thaw cycles a year, fewer than 60% of listed buildings. Of these, 15 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.
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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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