Sundial at Llantysilio Hall is a Grade II listed building in the Denbighshire local planning authority area, Wales. First listed on 22 May 1989. Sundial.

Sundial at Llantysilio Hall

WRENN ID
empty-string-crag
Grade
II
Local Planning Authority
Denbighshire
Constituency
Clwyd East MP: Becky Gittins (Lab)
Country
Wales
Date first listed
22 May 1989
Type
Sundial
Address
Sundial at Llantysilio Hall, Llangollen
OS grid reference
SJ 191 435
Coordinates
52.9832, -3.20542
Source
Cadw listing

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

Description

The sundial at Llantysilio Hall is a circular sandstone pedestal topped with a moulded cap and lacking an extant base. It features a brass sundial plate dated 1717 and signed by John Lloyd. The sundial is inscribed on four sides with the following text: "Thou Swiftly runs Old Time ... t'is wisdom we ... With faith and righteousness keep time w'thee that when our glafs is run & we are cut down .... we may enjoy an everlasting Crown." The gnomon includes a detailed calendar for the rising and setting of the sun on both sides.

Local climate

Sundial at Llantysilio Hall receives an average of 920 mm of rain a year. This makes it wetter than 70% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 73% of listed buildings.

It experiences an average of 48 freeze-thaw cycles a year, more than 89% of listed buildings. Of these, 28 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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Nearby listed buildings

  1. Walled Garden at Llantysilio Hall Grade II 29 m
  2. Llantysilio Hall Grade II* 136 m
  3. Roberts Monument in churchyard of Church of St Tysilio Grade II 210 m
  4. Church of St Tysilio Grade II* 241 m
  5. Jones Chest Tomb in churchyard of Church of St Tysilio Grade II 245 m
  6. Pickering Monument in churchyard of Church of St Tysilio Grade II 251 m
  7. Jones Monument in churchyard of Church of St Tysilio Grade II 252 m
  8. Lychgate to churchyard of Church of St Tysilio Grade II 261 m
  9. Lodge to Llantysilio Hall Grade II 269 m
  10. Horseshoe Falls (partly in Llantysilio community) Grade II 394 m