Cemaes is a Grade II listed building in the Snowdonia National Park local planning authority area, Wales. First listed on 26 July 2000. House.

Cemaes

WRENN ID
young-solder-umber
Grade
II
Local Planning Authority
Snowdonia National Park
Constituency
Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
Country
Wales
Date first listed
26 July 2000
Type
House
Address
Cemaes, Llanegryn, Tywyn, Gwynedd
OS grid reference
SH 617 059
Coordinates
52.63398, -4.04356
Source
Cadw listing

Also on this page: flood risk · radon risk · weather exposure · detailed attributes ↓

Description

Cemaes is a two-storey building constructed from rubble stonework and topped with a slate roof, featuring slabbed verges and gable stacks. The facade has three window bays, with a central entrance that includes a modern door set within an open-fronted porch made of slate slabs. On either side of the entrance are large 6-pane horned sash windows, which are evenly spaced and each has a sawn slate lintel outlined by a slate projecting drip with out-turned dropped ends. At the back, there is a short wing that includes a lateral rear door and window.

Local climate

Cemaes sits in one of the wettest parts of the UK, with an average of 1,360 mm of rain a year. This makes it wetter than 96% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 94% of listed buildings.

It experiences an average of 25 freeze-thaw cycles a year, fewer than 73% of listed buildings. Of these, 10 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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  • Detailed attributes — period, style, materials, features
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  • 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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