6 Segontium Terrace is a Grade II listed building in the Gwynedd local planning authority area, Wales. First listed on 31 March 1983. Residential.

6 Segontium Terrace

WRENN ID
strange-sandstone-frost
Grade
II
Local Planning Authority
Gwynedd
Constituency
Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
Country
Wales
Date first listed
31 March 1983
Type
Residential
Address
6 Segontium Terrace, Caernarfon
OS grid reference
SH 479 626
Coordinates
53.13892, -4.27389
Source
Cadw listing

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

Description

6 Segontium Terrace is a pair of late Georgian houses, each with two bays and three storeys. They feature pebble-dashed walls and a slate roof, with moulded eaves on No 5 and a roughcast chimney stack on the left. The doorways are located in the inner bays. No 5 has a doorcase with fluted pilasters and a hood, while No 6 has reeded pilasters and a shallow canopy supported by thin consoles above the door. Both houses have replaced doors and overlights. The windows are framed in keyed architraves and are shorter on the upper storey. No 5 has replaced windows, whereas No 6 features 4-pane horned sashes. This building is part of a group with 5 Segontium Terrace.

Local climate

6 Segontium Terrace sits in one of the wettest parts of the UK, with an average of 1,370 mm of rain a year. This makes it wetter than 97% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 98% of listed buildings.

It experiences an average of 20 freeze-thaw cycles a year, fewer than 78% of listed buildings. Of these, 9 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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  1. 7 Segontium Terrace Grade II 5 m
  2. 5 Segontium Terrace Grade II 6 m
  3. 8 Segontium Terrace, including forecourt railings Grade II 11 m
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  5. Courtenay's Bistro Grade II 16 m
  6. South portal of former railway tunnel beneath Castle Square Grade II 23 m
  7. Paradox Nightclub (former Bonded Warehouse) Grade II 28 m
  8. Castle Square Presbyterian Church of Wales, including forecourt walls and railings Grade II 32 m
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  10. 11 Segontium Terrace, including forecourt railings Grade II 39 m