Swansea Castle is a Grade I listed building in the Swansea local planning authority area, Wales. First listed on 23 April 1952. Castle.
Swansea Castle
- WRENN ID
- calm-brass-myrtle
- Grade
- I
- Local Planning Authority
- Swansea
- Constituency
- Swansea West MP: Torsten Bell (Lab)
- Country
- Wales
- Date first listed
- 23 April 1952
- Type
- Castle
- OS grid reference
- SS 657 930
- Coordinates
- 51.62036, -3.94113
- Source
- Cadw listing
Description
Swansea Castle consists of two separate blocks. To the north, there is a small square tower that was later used as a debtors’ prison and may contain the earliest surviving work of the castle. The larger residential block forms the southeast angle of the structure. A notable feature of the castle is the arcaded parapet, which is linked to the work of Henry Gower, Bishop of St David's, who died in 1347, and is also found in the episcopal palaces at Lamphey and St David's.
Local climate
Swansea Castle sits in one of the wettest parts of the UK, with an average of 1,380 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 14 freeze-thaw cycles a year, fewer than 87% 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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- Full EPC report — heating system, energy costs, size, glazing, construction etc.
- Sale history — 3 transactions since 2017
- No related consent applications matched
- 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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