Melin Sguthan (also known as Union Mill) is a Grade II listed building in the Isle of Anglesey local planning authority area, Wales. First listed on 30 January 1968. Windmill.
Melin Sguthan (also known as Union Mill)
- WRENN ID
- vacant-paling-heath
- 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 Sguthan (also known as Union Mill), Gaerwen, Llanfihangel Ysgeifiog
- OS grid reference
- SH 478 721
- Coordinates
- 53.2242, -4.28094
- Source
- Cadw listing
Description
Melin Sguthan, also known as Union Mill, is a full height, four-storey windmill tower built in a circular plan. The walls are made of rubble masonry that slightly taper, and were originally rendered, with some render still remaining. The structure is roofless and capless, featuring fragmentary remains of a wooden super-structure. There are doorways at the ground floor and rectangular windows on the upper levels, which have segmental heads made of roughly hewn voussoirs.
Local climate
Melin Sguthan (also known as Union Mill) sits in one of the wettest parts of the UK, with an average of 1,190 mm of rain a year. This makes it wetter than 91% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 95% of listed buildings.
It experiences an average of 16 freeze-thaw cycles a year, fewer than 84% of listed buildings. Of these, 6 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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- Full EPC report — heating system, energy costs, size, glazing, construction etc.
- 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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