Signal Platform in Bay is a Grade II listed building in the Cardiff local planning authority area, Wales. First listed on 20 August 1992. Church.

Signal Platform in Bay

WRENN ID
proud-wattle-vetch
Grade
II
Local Planning Authority
Cardiff
Constituency
Cardiff South and Penarth MP: Stephen Doughty (Lab)
Country
Wales
Date first listed
20 August 1992
Type
Church
Address
Signal Platform in Bay, Inner Harbour Area, Butetown
OS grid reference
ST 191 743
Coordinates
51.46218, -3.16505
Source
Cadw listing

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

Description

The Signal Platform in Bay is one of two late 19th century signal platforms that were part of a former steam packet harbour. This southern platform is similar to the northern one but is slightly smaller. It is supported by wooden piles and features cross-bracing reinforced with metal plates. The decking includes iron bollards and railings. There are two railway-type signals mounted on slim solid posts with decorative pinnacles, along with ladders. Originally, a floating landing stage was located at the rear of this platform, which was connected to the quayside by a pivoting bridge that ran between wooden dolphins closer to the shore.

Local climate

Signal Platform in Bay sits in a wetter-than-average part of the UK, with an average of 1,080 mm of rain a year. This makes it wetter than 86% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 87% of listed buildings.

It experiences an average of 22 freeze-thaw cycles a year, fewer than 77% of listed buildings. Of these, 8 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.

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