Cemaes Bay (Traeth Mawr)

If there is one beach I can remember from my childhood holidays in Anglesey it’s Cemaes Bay. This is the kind of beach that has everything a small (or big) child could ever want. There’s plenty of sand, and it’s the kind that’s perfect for sand castles. There are rock pools a plenty and even a promenade if you’re too grown up for rock-pooling.

What Cemaes didn’t have those many years ago was the St Patrick’s Bell. Installed in 2014 this bell on legs is set to chime on the high tide.

There are actually two beaches at Cemaes; this one, Traeth Mawr which means “big beach”, and another,  Traeth Bach, just around from the harbour.
Both beaches are overlooked by the little town of Cemaes which has all the facilities you’ll need for a day at the beach.

Also known as:

Traeth Mawr

Type of beach

Sand & rock

Lifeguard service


Dogs friendly beach?

Dogs are not allowed on the main beach left of the car park between 1st May and 30th September. They are allowed all year on the area beyond the harbour

Anglesey dog friendly beaches »


  • Kayaking/canoeing
  • Sailing
  • Rock pooling
  • Wind surfing


  • Promenade

Nearest town



LL67 0ND

OS grid ref.

SH 3741 9365

Water quality

Water quality star rating

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Cemaes Bay Reviews


David Rogerson
Feb 23rd 2021

Fantastic place especially for families let the kids run free, Mums/Dads you can keep a eye on them where ever they may be on the beach. Plus they have the best fish/chip shop and the best people, welsh hospitality. ????????????

What did we get wrong?