The Beach Guide

Porth Tywyn Mawr Beach (Sandy Beach)

Porth Tywyn Mawr Beach - Anglesey

© Brian Green and licensed for reuse under this Creative Commons Licence

Porth Tywyn Mawr is also known as Sandy Beach, and for good reason. This long stretch (half a mile) of beach is comprised of beautiful golden sand and largely backed by low dunes.

Apart from the Penrhyn Bay caravan site at the southern end of the beach Porth Tywyn Mawr has a distinctly rural feel with a backdrop of fields and the headland of Trwyn Llwyd to the north.

There is plenty of space both on the beach and in the water and Sandy beach is a popular spot for watersports such as sailing, jet-skiing, kite-surfing, kayaking and even surfing.

There is very little in the way of facilities at Porth Tywyn Mawr. For toilets and a shop you will either have to head to Church Bay or Llanfaethlu.

Also known as:

Sandy Beach

Type of beach


Lifeguard service


Dogs friendly beach?

We do not have information on this beach but restrictions may apply (usually from Easter until the end of Summer)

Anglesey dog friendly beaches »


Nearest town



LL65 4YH

OS grid ref.

SH 2867 8502

Water quality

Water quality star rating


Green Coast AwardMarine Conservation Society Recommended

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