Melin Drylliau is a Grade II listed building in the Isle of Anglesey local planning authority area, Wales. First listed on 5 April 1971. House.
Melin Drylliau
- WRENN ID
- carved-step-swallow
- Grade
- II
- Local Planning Authority
- Isle of Anglesey
- Constituency
- Ynys Môn MP: Llinos Medi (PC)
- Country
- Wales
- Date first listed
- 5 April 1971
- Type
- House
- Address
- Melin Drylliau, Church Bay, Cylch-Y-Garn
- OS grid reference
- SH 305 887
- Coordinates
- 53.36818, -4.54855
- Source
- Cadw listing
Description
Melin Drylliau is an early 18th-century circular tapering tower that was once a windmill, standing four storeys tall. The walls are made of almost complete rubble masonry and feature remains of racking at the top. There are window openings on the upper storeys, and the ground floor has doorways with rough hewn voussoirs above their cambered heads. The tower currently lacks a cap.
Local climate
Melin Drylliau sits in a wetter-than-average part of the UK, with an average of 1,040 mm of rain a year. This makes it wetter than 83% 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 4 freeze-thaw cycles a year, fewer than 98% of listed buildings. Of these, 2 follow 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
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