Anglesey (Ynys Môn) is, by some distance, the best island in Britain to visit with a dog. Most beaches allow dogs year-round — not seasonally restricted to a single corner of the strand, but the whole beach, the whole year. The coastal path circles 125 miles of headlands, dunes, and cliff-top turf. Half the pubs have a beer garden and a water bowl at the door. If you’re planning a trip with a dog, you’ve picked the right place.
Beaches
Newborough Beach (Traeth Niwbwrch)
The finest dog-friendly beach on the island, and one of the finest in Britain. Newborough Beach is a mile of firm Atlantic sand backed by a Forestry Wales pine forest, with Llanddwyn Island — a tidal peninsula of volcanic rock and ruined lighthouses — at the far end. Dogs are welcome year-round on the main beach and the forest paths. The forest trails run for several miles through the trees and connect to the dune system behind the beach: a loose, scrambling run through marram grass that most dogs treat as the highlight of their day. The walk from the car park to Llanddwyn and back is around 5 miles (8 km) — a proper half-day out.
Practical: ANPR cashless parking at the forest entrance — £5 for 2 hours or £15 all day. Postcode LL61 6SG. Check tide times if you’re walking to Llanddwyn.
Lligwy Beach
Lligwy Beach near Moelfre is the east coast’s most underrated beach for dogs — broad, north-facing, never crowded, and entirely unrestricted year-round. The rock pools at the northern end keep dogs occupied while you sit. The coastal path south towards Moelfre adds distance if your dog needs more than a beach sprint; the ancient village of Din Lligwy is a 15-minute walk inland from the car park and welcomes well-behaved dogs on leads.
Practical: Small pay-and-display car park above the beach. Postcode LL72 8NL. Dogs can run off-lead freely.
Aberffraw Beach
The quietest Blue Flag beach on Anglesey, and worth the drive to the southwest coast. Aberffraw Beach sits at the mouth of the Afon Ffraw estuary, backed by SSSI dunes where orchids appear in late spring. Dogs are welcome year-round. The approach through the village means it never gets busy — you’ll often have long stretches to yourself in the morning. The estuary at low tide is shallow and warm enough for dogs to wade without getting swept away.
Practical: Limited free parking in the village. Postcode LL63 5EL. No facilities at the beach — bring water.
Red Wharf Bay (Traeth Coch)
Not a swimming beach — the tidal currents over the flats are strong — but one of the finest places on the island for a long dog walk. At low tide, Red Wharf Bay reveals four miles of sand and tidal flats with birds working the shoreline in every direction. Dogs can run for a long time before running out of beach. The Ship Inn at the edge of the bay is reliably dog-friendly in its beer garden.
Practical: Free car park at the bay. Postcode LL75 8RJ. Dogs welcome year-round.
Church Bay (Porth Swtan)
Remote in feel, tucked between headlands on the northwest coast, and reliably quiet. Church Bay welcomes dogs year-round on a beach that most visitors don’t bother with — which is exactly its appeal. The Lobster Pot restaurant at the top of the bay has outdoor seating that accepts dogs; in season, it’s the right place to eat after a long coastal walk.
Practical: Small car park above the beach. Postcode LL65 4ET. Arrive early on sunny weekends.
Porth Dafarch
A sheltered cove on the southwest coast of Holy Island, Porth Dafarch has a natural rock pool at low tide and a coastal path north towards Trearddur Bay that rewards dogs and walkers equally. Dogs welcome year-round.
Walks
Penmon Point (Trwyn Du)
The Penmon Point walk from Penmon Priory to the lighthouse at Black Point is four miles of coastal path with grey seals hauled out on the lower rocks and Puffin Island just offshore. The path is wide, grassy, and well-drained — good underfoot in all seasons. The priory grounds and the 17th-century dovecote are free to enter with a dog on a lead. This is the walk most Anglesey dog owners consider their benchmark.
Newborough Forest Loop
The Newborough Forest loop through the Forestry Wales pine plantation behind the beach is a 4-mile waymarked circuit of forest tracks, dune paths, and beach access. Wide enough to run dogs off-lead without disturbing other walkers. Red squirrels are regularly spotted from the car park end of the forest on quiet mornings — keep dogs under close control in the areas where squirrel activity is signed.
Holyhead Mountain
The circular walk over Holyhead Mountain on Holy Island — 220 metres, 4-mile loop — is fully dog-accessible on open moorland and coastal path. The summit is broad, the views extend to Ireland on clear days, and the descent to South Stack passes choughs foraging on short cliff-top turf. Keep dogs on a lead near the cliff edges.
Cemlyn Bay
The Cemlyn Bay walk along the shingle ridge is one of the finest short coastal walks on the island — half a mile of ridge above a brackish lagoon, with the north coast open to sea on one side. Dogs are welcome on the footpaths around the lagoon. Note: between May and July the lagoon holds one of the UK’s largest Sandwich tern colonies — dogs must stay on the marked paths and should be on leads throughout.
Dog-friendly pubs and cafés
The Ship Inn, Red Wharf Bay — beer garden and outdoor tables at the edge of the tidal flats. The standard move after the bay walk.
The White Eagle, Rhosneigr — large beer garden above the dunes. Accepts dogs in the garden; busy on summer evenings so arrive early.
The Pilot Boat, Beaumaris — waterfront pub with outdoor seating on the Beaumaris promenade. Useful after a Penmon Point walk.
Holland Arms, Gaerwen — central Anglesey, reliable for dogs, food, and a pint if you’re between destinations.
Practical notes for travelling with a dog
Dog restrictions: Where seasonal restrictions apply — typically May to September on designated sections of busier beaches — they are signed at the beach entrance. Locals are patient with visitors who didn’t see the sign; less so with those who ignored it.
Water: There is no shortage of fresh water for dogs on Anglesey walks — streams cross most coastal paths, the forest at Newborough has several. Carry a collapsible bowl for beach visits where there’s no running water nearby.
Tides: Check the tide before Newborough/Llanddwyn and Red Wharf Bay walks. A dog sprint on an exposed tidal flat is safe at low tide and considerably less safe as the tide turns.
Leads near livestock: Anglesey’s coastal paths cross active farmland — gates, stiles, and stock fencing indicate sheep grazing. Keep dogs on leads near livestock year-round. Lambing season (February–April) is when it matters most.