Situated on the north coast between Newquay and Padstow.
Trevarnon Bay hosts a northwest facing beach.

The beach is wide and gently sloping.

The sand dunes are restricted and in very poor condition. There is a short active face and restricted vegetated dune.

The sand is coarse.

The Treyarnon Stream flows onto the beach. Some reed growth by the stream may help sand stabilisation.

There have been some come cliff repairs to shore up road on right hand side (northeast) and there is evidence of rock instability.

On the left hand side (south west) residential development on the cliffs is at risk of erosion.