- Category: Water Feature
- Type: Bay
- Latitude/Longitude: 51°51'43"N 5°9'25"W
- Eastings/Northings: 182711, 222866
- OS Grid: SM827228
- Mapcode Local: GBR CB.STQJ
- Mapcode Global: VH1R3.KGGF
Location and coordinates are for the approximate centre of Porthmynawyd within this administrative area.
Geographic features and populated places may cross administrative borders.