Treyarnon Bay is a north-west facing sandy cove with a lovely clean beach, backed by sand dunes and surrounded by low cliffs. To the north is Treyarnon Point and the south, Trethias Island, both of which provide some shelter. It is one of the most popular beaches in the area, especially with families because the expanse of soft sands and low waters.
A small car park is situated by the beach, from where there is level access to the beach. Toilet and refreshment facilities are nearby. Treyarnon Bay was recommended in the Marine Conservation Society Good Beach Guide in 2014 as one of the best family beaches in the Padstow area.
The coastal footpath provides breathtaking views along the coast to Trevose Head in one direction and Newquay and even St Ives on a clear day, in the other direction. At the mouth of the bay is Treyarnon Island. This large rock, topped with grass and thrift, is separated from the mainland by a narrow gulley and is a nature reserve and home of breeding sea birds.
There are lots of sand and rock pools stretching round one side of Treyarnon Bay which are ideal for children to explore. These rockpools are teeming with life such as shrimps, crabs and small fish. There is even a natural "swimming pool" within the rocks to the north of the beach.