Beautiful Porth Trecastell Beach
Photo : Tim Snow

Porth Trecastell or Cable bay near rhosneigr

Porth Trecastell or Cable bay as it is known locally is one of those more remote beaches on this side of the island and is one of five beautiful beaches around the area of Rhosneigr. This clean and sandy beach is very popular in the summer with families as it is sheltered and safe for swimming and snorkelling. This beach is a wide beach with lots of rock pools either side that can be explored by both parents and children alike. Like many beaches on this side of Anglesey the water quality is excellent.

Cable Bay beach is situated on the A4080, the main road that travels from Llanfairpwll, through Brynsiencyn ( Anglesey Sea Zoo), Newborough (Newborough Forest, Anglesey Model Village, Anglesey Transport Museum, Llyn Parc Mawr) through Aberffraw (St. Cwyfan’s Church) and towards Rhosneigr.

Playing in the surf at Cable bay

watersports at cable bay (porth trecastell)

This is a popular beach for those who enjoy kayaking, canoeing and snorkelling as this beach allows safe access to the water as it is flat and sheltered.

Barclodiad y Gawres Burial Chamber

Entrance to Barclowedd Y Glawes burial chamber

Barclodiad y Gawres (Welsh for ‘apronful of the giantess’) is a Neolithic burial chamber between Rhosneigr and Aberffraw on the southern coast of the island of Anglesey in North Wales.

It is an example of a cruciform passage grave, a notable feature being its decorated stones. Similar graves and marks exist across the Irish Sea in the Boyne Valley.

More or less equidistant from Aberffraw and Rhosneigr, it is on the north side of Porth Trecastell/Cable Bay, on the Anglesey Coastal Path, and a short walk from the A4080. It is cared for by the Welsh heritage organisation Cadw. From April to October at weekends and bank holidays it is possible to enter the chamber, if accompanied by a key holder (from the Wayside shop in Llanfaelog).

cable bay beach - cables to ireland

The name of this beautiful beach originates from the telephone cables that left this beach and travelled under the sea to either Ireland. The cables can still be seen at low water or when snorkelling.

rock climbing at cable bay (porth trecastell)

Some of the cliff faces that surround Cable bay provide some great rock climbing, described as most very good on good rock, with good situations, most problems are available on mid to low tides and dry quickly, apart from hidden wall. UK link (Courtesy of

snorkelling at cable bay

Snorkelling at Cable Bay

Cable Bay is a fantastic location to snorkel. It has amazing marine life and its sheltered.

There is a wide variety of marine life to see including Wrasse, Common Crab, Spider Crab, Sand Eels.