Summerhouse, in Grounds of Castle to the West of the Castle is a Grade II listed building in the Exmoor National Park local planning authority area, England. First listed on 4 August 1983. Summerhouse.

Summerhouse, in Grounds of Castle to the West of the Castle

WRENN ID
stranded-steel-scarlet
Grade
II
Local Planning Authority
Exmoor National Park
Constituency
Tiverton and Minehead MP: Rachel Gilmour (LD)
Country
England
Date first listed
4 August 1983
Type
Summerhouse
OS grid reference
SS 991 434
Coordinates
51.18149, -3.44429
Source
Historic England listing

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

Description

The summerhouse, built around 1727, is situated on the summit of the tor in the grounds of Dunster Castle, to the west of the castle. This small octagonal building is made of brick and features a 15th century timber mullion window. It is located within the Scheduled Ancient Monument of the Motte and Bailey at Dunster Castle in Somerset.

Local climate

Summerhouse, in Grounds of Castle to the West of the Castle sits in a wetter-than-average part of the UK, with an average of 1,130 mm of rain a year. This makes it wetter than 88% 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 10 freeze-thaw cycles a year, fewer than 90% of listed buildings. Of these, 5 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
  • 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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  5. Linhay, East of Castle Home Farmhouse Alongside Castle Hill Grade II 134 m
  6. Castle Mill Bridge Grade II 135 m
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  10. Hay Barn, North of Castle Home Farmhouse Grade II 153 m