The beach is split by a small stream that flows into the sea, often creating shallow pools popular with younger children.
The village of Cemaes, situated at the head of the bay, is the most northerly village in Wales.
The headlands framing the beach are composed of ancient Precambrian rock, some of the oldest in Wales.
The beach is a frequent spot for observing grey seals, which inhabit the nearby rugged coastline of the Anglesey Heritage Coast.
It is a key point along the Anglesey Coastal Path, a 125-mile long-distance trail circling the island.
Traeth Mawr, also known as Cemaes Beach, is a sheltered, north-facing sandy bay located on the northern coast of the Isle of Anglesey. The beach is a designated bathing area featuring a combination of sand and pebble shores flanked by rocky headlands. It is part of the Anglesey Area of Outstanding Natural Beauty, providing habitat for various coastal bird species. The bay is popular for swimming, kayaking, and paddleboarding due to its relatively calm waters protected from strong prevailing winds. Access to the beach is facilitated by a promenade that runs along the village edge. Facilities include nearby public conveniences and proximity to the amenities of Cemaes village.
From the elevated coastal path on the western headland looking back across the entire bay toward the village.
Bring water shoes if you plan to venture toward the pebble sections or rocky edges at low tide.
Check local tide tables before visiting to ensure you have maximum beach area for walking and sunbathing.
Utilize the designated coastal path segments that lead from the beach towards the headlands for expansive views of the Irish Sea.
Attempting to swim during high spring tides or strong northerly winds when surf conditions can become unpredictable.
Take all litter home; keep dogs on leads in designated restricted zones during summer months; be mindful of local nesting birds.