Aberdaron Beach is about 1¼ miles long, mostly sandy and backed by banks of sand and boulder clay with a concrete sea wall protecting the village. The sand is fairly course at the top of the beach, becoming finer lower down. It's good for pebble collecting, with an amazing variety of assorted pebbles to be found, including white quartz, purple sandstones, grey-green diorite and black siltstone. The beach looks out towards the islands of Ynys Gwylan to the south. Two streams - Afon Daron and Afon Cyllyfelin - flow onto the beach after merging in the village. Parking is at an attended / P&D car park in the village, and facilities include toilets, cycle parking, picnic tables overlooking the beach, First Aid post (seasonal), ice-cream and beach shops, two pubs, a fish & chip shop and a Spar store. There is also some free parking space at the top of the hill leading west out of the village, from where access to the beach is a walk down a track leading to a slipway onto the sand.
It's a popular beach for windsurfing, swimming, kayaking and surfing. The surf here can be a bit messy and there are some lone rocks on the beach to be aware of, but mid to high tide is the best time to aim for. It's a good beach for beginners and is less busy than other local surf beaches.
A dog ban operates on about 150 yards of the beach in front of the village, from 1st April to 30th September.
Porth Simdde is at the western end of Aberdaron Bay, and becomes a small cove for about 2 hours either side of high tide, when it can be reached via the coastal path which drops down to near beach level.