Porth Trwyn Beach

The quiet beach of Porth Trwyn near Llanfaethlu is on Anglesey’s west coast a few miles north of Holyhead. There is very little in the way of development here with just a few cottages overlooking the dunes to the back of the beach.

At high tide the only remaining beach at Porth Trwyn is band of pebbles. However, as the tide drops away a good-sized expanse of sand is exposed. There are also some rocky areas on the beach which provide plenty of opportunities for rockpooling.

There aren’t much in the way of facilities at Porth Trwyn. For toilets and a shop you will need to go to the village of Llanfaethlu just under a mile away.

Type of beach


Lifeguard service


Dogs friendly beach?

Dogs allowed

Anglesey dog friendly beaches »


  • Good fishing
  • Rock pooling

Nearest town



LL65 4HD

OS grid ref.

SH 2967 8776


Free parking available.

Water quality

Water quality star rating


Green Coast AwardMarine Conservation Society Recommended

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Porth Trwyn Beach Reviews

Nice Quiet Beach

Nick Harrington
Aug 10th 2020

Dog friendly. Ideal for a quiet afternoon/morning. Good stop off on the Anglesey Coastal Path and only a 30 minute walk to Church Bay and the Wavecrest Cafe.

What did we get wrong?