Trearddur Bay
Rocky coves and clear water on Holy Island.
Photo: Ian Greig / CC BY-SA 2.0, via Wikimedia Commons
Trearddur Bay sits on Holy Island, just across the causeway from the rest of Anglesey and next to the ferry port of Holyhead. Its coastline is a run of rocky coves and a wide sandy main beach, with some of the clearest bathing water on the island.
Staying near Trearddur Bay
A relaxed, watery base handy for the ferries to Ireland and the dramatic cliffs of Holyhead Mountain. Popular with sailing and swimming families.
What's here
The main beach and the hidden coves for swimming and kayaking; South Stack lighthouse and the seabird cliffs nearby; and the climb up Holyhead Mountain, the highest point on Anglesey.
When to visit
Summer for the swimming and the coves; spring and early summer for the South Stack seabird colonies at their busiest.
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Common questions
Is Trearddur Bay good for swimming?
Yes — it is one of Anglesey's most popular swimming and watersports bays, with a sheltered sandy main beach and a series of rocky coves that hold clear, calm water. It has long been a favourite for sailing and family bathing.
What is there to see near Trearddur Bay?
South Stack lighthouse and its RSPB seabird cliffs are a few minutes away, along with the walk up Holyhead Mountain for island-wide views. The port of Holyhead, with ferries to Dublin, is also close by.