Tresaith is set in a small sheltered sandy bay named after the River Saith which cascades as a waterfall over the cliffs to the beach. The beach is very popular with families during the summer offering safe swimming and rock pools. The second beach is accessed by crossing below the waterfall, take care to watch the tides. There are public toilets near the beach, with wheelchair access. There is also a café, a first aid post, a shop and The Ship Inn Pub providing lots of tables inside and out, for meals overlooking the beach. The beach has a slipway and is a popular sailing destination. There is limited car parking with some spaces for cars displaying disabled stickers
Tresaith Beach is between Aberporth and Penbryn. The coast is part of the Ceredigion Coast Path and the stretches either side of Tresaith offer short walks with fantastic views across Cardigan Bay and the opportunity to spot dolphins and seals in the bay.