Porth Trecastell or Cable Bay is a sheltered sandy bay backed by dunes and edged by rock-pools and cliffs. A permissive (free) parking area is situated between the dunes and the A4080, from where access to the beach is a short walk over the dunes. This is a good beach for swimming and sunbathing and dogs are allowed at all times. On the headland to the north is the prehistoric burial chamber of Barclodiad y Gawres, internal viewings of which can be arranged. A footpath opposite the car park entrance heads off in the direction of Ty Croes rail station, which is about 1½ miles away.
Surf conditions can be good around high tide, but it's a small beach and quickly gets crowded. It's generally a good beginners' beach.