Porth Tywyn Mawr is a broad beach of golden sand backed by low dunes on the north-west coast of Anglesey, near Llanfaethlu, about half a mile long. Fields lie inland and a headland rises to the north, and a caravan and leisure park sits at the southern end, giving the beach its common name of Sandy ...
10
Parking nearby
0
Food Spots nearby
1
Staycations nearby
Parking:
Food:
Staycations:
4 day, 6 overnight
Abersant House
FAQ's/Things to Know
Where is Porth Tywyn Mawr?
Anglesey's western coastline conceals this extensive sandy bay away from the primary tourist trails. Walkers usually find the spot by trekking through the vast marram grass dunes that line the shore.
What type of place is Porth Tywyn Mawr?
Porth Tywyn Mawr is a long golden beach on the western edge of Anglesey in North Wales.
When is the best time to visit Porth Tywyn Mawr?
Spring through to autumn offers the most reliable coastal conditions for an enjoyable day on the sand. Aiming for a crisp, bright autumn afternoon ensures you see the changing sky colours at their absolute finest.
What can you do at Porth Tywyn Mawr?
Strolling along the massive half-mile expanse of flat sand provides plenty of space to escape the crowds. Active folk regularly head into the Atlantic waves for sailing, windsurfing, and sea kayaking.
How long should I spend at Porth Tywyn Mawr?
Allocating half a day allows ample time to enjoy the water sports and explore the dramatic dune network. Packing a proper picnic works best if you plan to extend your seaside stay until sunset.
Where do I park at Porth Tywyn Mawr?
Motorists can use ten available spaces nearby, which consist of four day and six overnight spots. Full details are available on the UK Hidden Gems app.
Where can I eat near Porth Tywyn Mawr?
There are no food spots recorded immediately near Porth Tywyn Mawr, check the UK Hidden Gems app for the nearest options.
Where can I stay near Porth Tywyn Mawr?
Abersant House offers a place to stay in the vicinity, providing one recorded staycation spot right in the local area. Full details are available on the UK Hidden Gems app.
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Last Updated:
02 July 2026



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