- Category: Water Feature
- Type: Bay
- Latitude/Longitude: 52°54'18"N 4°38'39"W
- Eastings/Northings: 222254, 337456
- OS Grid: SH222374
- Mapcode Local: GBR 51.P07T
- Mapcode Global: WH338.M7LQ
Location and coordinates are for the approximate centre of Porth Llydan within this administrative area.
Geographic features and populated places may cross administrative borders.