Melin Hermon is a Grade II listed building in the Isle of Anglesey local planning authority area, Wales. First listed on 30 January 1968. Windmill.
Melin Hermon
- WRENN ID
- quiet-oriel-frost
- Grade
- II
- Local Planning Authority
- Isle of Anglesey
- Constituency
- Ynys Môn MP: Llinos Medi (PC)
- Country
- Wales
- Date first listed
- 30 January 1968
- Type
- Windmill
- Address
- Melin Hermon, Bodorgan
- OS grid reference
- SH 389 689
- Coordinates
- 53.19363, -4.41142
- Source
- Cadw listing
Description
Melin Hermon is a full height, three-storey windmill tower that is circular in plan. The walls are made of rubble masonry, which used to be rendered, and they slightly taper as they rise. The tower features gritstone dressings and has a rectangular doorway with a voussoir head, along with rectangular openings at various stages above. Some structural timbers from the original construction still remain.
Local climate
Melin Hermon sits in one of the wettest parts of the UK, with an average of 1,180 mm of rain a year. This makes it wetter than 90% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 96% of listed buildings.
It experiences an average of 11 freeze-thaw cycles a year, fewer than 90% 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
- Sale history — 4 transactions since 2018
- 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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