- Category: Water Feature
- Type: Bay
- Latitude/Longitude: 53°25'8"N 4°27'50"W
- Eastings/Northings: 236344, 394172
- OS Grid: SH363941
- Mapcode Local: GBR HMBN.RX2
- Mapcode Global: WH41Z.DBGB
Location and coordinates are for the approximate centre of Cemaes Bay within this administrative area.
Geographic features and populated places may cross administrative borders.