Sully Island Island

Address: Sully Island (Sili), Vale of Glamorgan, Wales - tidal island off Sully Head

Sully Island is a small tidal island off the coast of the Vale of Glamorgan in Wales, near the village of Sully.

The island is visited for short coastal walks, birdwatching and shoreline exploration; its tidal connection makes timing of visits important. Walkers often use the island for views along the Bristol Channel and as a local natural landmark.

The island has long been noted on local maps and used by coastal communities; it has archaeological and historical interest recorded in local accounts, though it remains primarily a natural feature.

Sully Island lies a short distance offshore from Sully and Barry in south Wales and is exposed at low tide via a shingle or rocky causeway.

• Tidal access: A tidal island off the coast of the Vale of Glamorgan near the village of Sully that is reachable on foot at low tide across a rocky causeway.

Sully Island is reached on foot at low tide from the Sully Head area near the village of Sully (Vale of Glamorgan). The nearest town with public transit is Barry; local buses serve Sully village from Barry and Cardiff. Always consult local tide tables and, if unfamiliar, join a guided crossing.

• Respect tide times; the causeway is cut off on the incoming tide and tides can change quickly.
• Wear sturdy shoes-parts of the island are muddy and slippery after rain.
• Bring binoculars for seabird and seal spotting; the island attracts both.