Barmouth is a wide sandy beach on the north side of the Mawddach estuary. It consists of dunes with sandbars at low tide and is backed by a sea wall and promenade. Hazards of the beach include fast currents near the estuary and sandbars which cut-off from the beach on a rising tide. The main section of the beach is subject to a dog ban from April 1st to September 30th. A beach supervisor is on duty during July and August.
There are good facilities here including plenty of P&D parking, deckchair hire, toilets, drinking water, a slipway, fairground rides and cafes. To the north the beach is backed by a shingle bank, and there is a further large car park at this end. Barmouth rail station is approximately 100 yards from the beach and the town itself has more shops, cafes, hotels, supermarkets and a Tourist Information Centre. A passenger ferry operates across the estuary to meet the trains on the Fairbourne railway, and there is a foot/cycle path alongside the railway on the Barmouth Bridge (over ½ mile long). As this now forms part of the Wales Coastal Path there is no longer a toll to cross it.
Panoramic views of Barmouth and the Mawddach estuary can be seen from the National Trust property of Dinas Olau, directly behind the town. This can be reached via Dinas Olau road which leads to a steep zig-zag path up the hill.