Cemlyn Beach

Cemlyn is a large, sweeping stretch of shingle beach located on Anglesey’s north coast.

The shingle ridge provides a barrier between a large saltwater lagoon behind the beach. This is an important and unique wildlife habitat which is managed by the North Wales Wildlife Trust as a nature reserve. The reserve is perhaps best known for its colony of breeding sandwich terns.

The lagoon is actually partly man made; previously it was an area of salt marsh but a Captain Vivian Hewitt decided to further his interest in birds by building a dam across the outflow, turning it into a lagoon.

All the beach, lagoon and much of the surrounding countryside is owned by the National Trust as part of the Cemlyn Estate. Whilst this guarantees the areas preservation it is hard not to notice the hulking form of Wylfa nuclear power station just to the east.

Type of beach


Lifeguard service


Dogs friendly beach?

Dogs allowed

Dogs are allowed but must be kept away from nesting birds. and there are no dog bins.

Anglesey dog friendly beaches »


  • Kayaking/canoeing

Nearest town



LL67 0DU

OS grid ref.

SH 3338 9321


There are two free car parks with space for 100 cars between them.

Water quality

Water quality star rating


Green Coast AwardMarine Conservation Society Recommended

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Cemlyn Beach Reviews


Aug 14th 2019

Stone beach, beautiful setting , long or short walk with nature reserve

What did we get wrong?