Sully Island
Island Small tidal island off Wales, accessible at low tide
A tidal island off the Welsh coast reachable at low tide; visitors explore sand flats, old seawalls and shorebird habitat or arrive by small boat from the mainland.
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.
How to Get to Sully Island #
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.
Tips for Visiting Sully Island #
- 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.
Best Time to Visit Sully Island #
Visit in late spring through summer for safest access; always check tide tables before attempting the causeway.
Weather & Climate near Sully Island #
Temperate climate with mild summers (peaking in July) and cold winters (coldest in February). Temperatures range from 2°C to 21°C. Moderate rainfall (976 mm/year).
January
January is cold with highs of 8°C and lows of 3°C. Significant rainfall (102 mm) and mostly overcast skies.
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February
February is the coolest month with highs of 8°C and lows of 2°C. Moderate rainfall (77 mm) and mostly overcast skies.
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March
March is cold with highs of 10°C and lows of 4°C. Moderate rainfall (78 mm) and mostly overcast skies.
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April
April is cold with highs of 13°C and lows of 5°C. Moderate rainfall (55 mm) and mostly overcast skies.
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May
May is cool with highs of 16°C and lows of 7°C. Moderate rainfall (58 mm) and mostly overcast skies.
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June
June is cool with highs of 19°C and lows of 10°C. Moderate rainfall (61 mm) and mostly overcast skies.
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July
July is cool with highs of 21°C and lows of 12°C. Moderate rainfall (59 mm) and mostly overcast skies.
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August
August is cool with highs of 21°C and lows of 12°C. Regular rainfall (83 mm) and mostly overcast skies.
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September
September is cool with highs of 18°C and lows of 11°C. Regular rainfall (91 mm) and mostly overcast skies.
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October
October is cool with highs of 14°C and lows of 8°C. Regular rainfall (100 mm) and mostly overcast skies.
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November
November is cold with highs of 11°C and lows of 5°C. The wettest month with heavy rain (109 mm) and mostly overcast skies.
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December
December is cold with highs of 9°C and lows of 4°C. Significant rainfall (103 mm) and mostly overcast skies.
