Porthclais is a small sheltered inlet port to the south west of St Davids. Porthclais (also known as Porth Clais) harbour was built in the 12th century and served nearby St. Davids, importing coal and timber.
Porthclais is still used as a small port by local fishermen and recreational sailors. The old harbour wall, built by the Romans is largely intact. The harbour dries out at low tide and is a good launching spot for small boats, dive craft and kayaks who are setting out to explore St Bride’s Bay.