- Category: Water Feature
- Type: Island
- Latitude/Longitude: 51°55'40"N 5°14'15"W
- Eastings/Northings: 177499, 230454
- OS Grid: SM774304
- Mapcode Local: GBR C6.NRJ2
- Mapcode Global: VH0T7.5SFW
Location and coordinates are for the approximate centre of Ynys Gwair within this administrative area.
Geographic features and populated places may cross administrative borders.