Fortwilliam, 20 Fortwilliam Road, Tobermore, Magherafelt, Co.Londonderry is a Grade B1 listed building in the Mid Ulster local planning authority area, Northern Ireland. First listed on 3 November 1977.

Fortwilliam, 20 Fortwilliam Road, Tobermore, Magherafelt, Co.Londonderry

WRENN ID
waning-pillar-foxglove
Grade
B1
Local Planning Authority
Mid Ulster
Constituency
Mid Ulster MP: Mr Cathal Mallaghan (SF)
Country
Northern Ireland
Date first listed
3 November 1977
Irish grid reference
H 833 971
Coordinates
54.81542, -6.70411
Source
NI Environment Agency listing

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

Local climate

Fortwilliam, 20 Fortwilliam Road, Tobermore, Magherafelt, Co.Londonderry 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 84% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 52% of listed buildings.

It experiences an average of 32 freeze-thaw cycles a year, fewer than 59% of listed buildings. Of these, 20 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
  • No flood data for this area
  • 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

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