Best Beaches in Snowdonia & Gwynedd
Written by UK Hidden Gems Editorial
Updated 5 August 2026
The best beaches in Snowdonia & Gwynedd are Porth Ysgo, Porth Iago, Traeth Nefyn, Harlech Beach, Traeth Porth Meudwy, Traeth Porth Ceiriad, Criccieth Beach and Aberdaron Beach.
Snowdonia and Gwynedd hold some of the finest coastline in Wales, where the mountains of Eryri run almost to the sea and the long finger of the Llyn peninsula reaches out into Cardigan Bay. The shore here ranges from broad, dune-backed sands to tiny coves that no road can reach.
On the Llyn, secluded golden coves like Porth Ysgo and Porth Iago sit below the cliffs, while the fishing landing at Porth Meudwy still launches boats for Bardsey Island. Further along, the great flat sweep of Harlech Beach runs out beneath its castle, and the long curve of Traeth Nefyn ends at an inn standing right on the sand.
There are surf beaches too, like Porth Ceiriad below its high cliffs, and gentler town beaches such as Criccieth and Aberdaron. Some are easy to reach with a car park close by, while others ask for a walk down steep steps or a scramble over rocks, often with no facilities at the end.
Here are eight of the best beaches to seek out in Snowdonia & Gwynedd.
Porth Ysgo
Photo: Jonathan Wilkins via Geograph.org.uk
Porth Ysgo is a secluded cove of golden sand on the south coast of the Llyn peninsula, below the village of Llanfaelrhys near Rhiw, on National Trust land. A flight of wooden steps drops down the cliff to a beach flanked by boulder fields, which make it one of the best-known bouldering and climbing spots in Wales, with a waterfall spilling toward the sand at its fullest after rain.
The remains of an old manganese mine and its jetty lie around the cove. There are no facilities, and the sand shows as the tide falls.
Seek it out for its quiet and its climbing.
Porth Iago
Photo: Eirian Evans via Geograph.org.uk
Porth Iago is a small, west-facing sandy cove on the wild coast of the Llyn peninsula in Gwynedd, near Aberdaron, sheltered between two low grassy headlands. Pale sand and clear, turquoise water make it a favourite for swimming, snorkelling and paddleboarding, with an old hillfort on the headland above.
It is reached down a private farm track to a small paying car park, then a short scramble down the dunes, and a food van sometimes sets up in season. There are no other facilities, and it stays quiet even in summer.
Seek it out for a sheltered swim away from the crowds.
Traeth Nefyn
Photo: Neville Goodman via Geograph.org.uk
Traeth Nefyn is the eastern end of a long curve of fine sand that runs for about two miles along Nefyn Bay, below Nefyn town on the Llyn coast. The bay faces north and stays fairly sheltered, and people use it for swimming, walking, angling and watersports.
At the far western end the sand reaches the Porthdinllaen headland, where the Ty Coch Inn stands right on the beach. Out in the bay grows one of the largest seagrass meadows in Wales.
Seek it out for a long, gentle walk along the sand.
Harlech Beach
Photo: DS Pugh via Geograph.org.uk
Harlech Beach is a broad, flat sweep of sand backed by a great system of dunes below the town of Harlech in north Wales. The dunes are kept as a nature reserve, and the sand runs a long way out at low tide toward Cardigan Bay.
Harlech Castle stands on its rock behind the dunes, left inland as the sea drew back over the centuries. A path crosses the railway and the dunes to reach the beach, with a car park and links golf course nearby.
Seek it out for wide open sand beneath a castle.
Traeth Porth Meudwy
Photo: Dave Croker via Geograph.org.uk
Traeth Porth Meudwy is a small rocky cove southwest of Aberdaron, still worked as a fishing landing where boats, nets and lobster pots are hauled up the shingle ramp. It is the departure point for the ferry to Bardsey Island, and pilgrims once set out for the same island from here.
A roughly three-mile circular walk along the coast reaches it from Aberdaron. This is a working cove rather than a bathing beach, so come for its character.
Seek it out for the working boats, the history and the coast walk.
Traeth Porth Ceiriad
Photo: Eirian Evans via Geograph.org.uk
Traeth Porth Ceiriad is a large sandy bay near the southern tip of the Llyn, between Abersoch and Hell's Mouth, backed by high sandstone cliffs. It faces southeast across Cardigan Bay toward the mountains of Snowdonia, with St Tudwal's Islands offshore.
Surfers come for the waves, and the eastern end has good snorkelling. Getting down means parking at Nant y Big farm, crossing fields and taking a steep staircase cut into the cliff.
The water has powerful waves and rip currents, so take care in the sea. Seek it out for its scale and its surf.
Criccieth Beach
Photo: Chris Carlson via Geograph.org.uk
Criccieth Beach runs in a crescent of sand and shingle below the headland at Criccieth in north Wales, split in two by the rock on which the ruined castle stands. The eastern beach lies along a promenade, while the western side is quieter, both looking out over Tremadog Bay.
Shingle gives way to firmer sand toward the eastern end. The town's cafes and shops back the front, with the castle overhead, making it easy to combine a visit with a wander through Criccieth.
Seek it out for an easygoing beach with the town close at hand.
Aberdaron Beach
Photo: Jonathan Wilkins via Geograph.org.uk
Aberdaron Beach curves along the front of a small whitewashed village at the far end of the Llyn Peninsula, where two rivers meet the sea. The soft sand shelves gently into the bay, which faces southwest and takes the full weight of the Irish Sea weather.
Right above the shore stands St Hywyn's Church, a low stone building that has sat here since the twelfth century and still keeps an old Romanesque doorway. Fishing boats and village houses press close behind the sand.
Look out past the headland and you can see Bardsey Island a few miles offshore, once the end point for pilgrims. Seek it out as a base for the coast path in either direction.
FAQs
Which beaches in Snowdonia and Gwynedd are best for surfing?
Porth Ceiriad, near the southern tip of the Llyn, draws surfers to its powerful waves below high sandstone cliffs. The same waves come with rip currents, so it suits confident swimmers who know the conditions. Traeth Nefyn is a gentler option for general watersports.
Are any of these beaches reached without a long walk?
Yes. Harlech Beach and Criccieth Beach both have car parks and easy access close to town, and Traeth Nefyn sits just below Nefyn. Others, such as Porth Ysgo, Porth Iago and Porth Meudwy, ask for steps, tracks or a longer coastal walk.
Do the Llyn beaches have facilities?
Many of the smaller coves have none at all. Porth Iago sometimes has a seasonal food van but no other facilities, and Porth Ysgo has none. For cafes and shops close at hand, head instead to the town beaches at Criccieth or Aberdaron.
Conclusion
From the wide sands beneath Harlech Castle to the hidden coves of the Llyn, this coast offers a beach for every mood. Some are broad and easy, with car parks and a promenade close by, while others reward a steep walk down to a cove with no facilities at all.
A few, like Porth Ceiriad, carry powerful waves and rip currents, so check conditions and take care in the water. Others, such as Porth Meudwy, are working coves better suited to a wander than a swim.
Wherever you head, the tides matter here, and much of this shore is quiet and unstaffed, so go prepared and take your litter home. With the mountains at your back and Cardigan Bay ahead, these are the best beaches to seek out in Snowdonia & Gwynedd.
