- Category: Water Feature
- Type: Bay
- Latitude/Longitude: 53°17'11"N 4°41'4"W
- Eastings/Northings: 221142, 379971
- OS Grid: SH211799
- Mapcode Local: GBR GNT0.DY9
- Mapcode Global: WH31B.0NJC
Location and coordinates are for the approximate centre of Porth y Gwîn within this administrative area.
Geographic features and populated places may cross administrative borders.