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image for Beach item typeMorfa Bychan (Black Rock Sands)

  • Blue Flag Wales
  • Keep Wales Tidy

Beach, free entry


A long and sandy bay backed by sand dunes at the northern edge of the mouth of Tremadog Bay, south of Porthmadog. Even though the name suggests a dark beach, you won’t see much in the way of blackness. Black Rock Sands is an open, wide beach with fine sands. The name comes from the area to the west of the beach dominated by a large, multi-coloured headland rock, low-tide caves and rock pools, an area rich in marine life. Natural history is also a feature of the local sand dunes, which have been declared a ‘Site of Special Scientific Interest’.

Unusually, you can drive onto the beach here – so it’s a popular spot not just for picnickers and sandcastle builders, but also for motor boats and water bikes which have a special zone designated for their use.

Blue Flag & Seaside Award beach. Shop, toilets, slipway, parking. Dog restrictions apply April - end September.


Free entry


Porthmadog Tourist Information Centre


Morfa Bychan,
LL49 9YA



Plan route to Morfa Bychan (Black Rock Sands) using Google mapsPlan route using Google maps

Map reference: SH 543364  Lat: 52.90613 Long: -4.16687

West on the A487 through Penrhyndeudraeth and straight on at the roundabout (signed for Porthmadog). Turn left in the town in between the Post Office and a Factory Shop (signed Morfa Bychan/Black Rock) and in Morfa Bychan, turn left where signed for Traeth/Beach. This road ends at the beach - you can park on the beach.

Accessible by Public Transport: 3 miles from Porthmadog station