Trearddur Bay (pronounced 'tree-are-the') is a popular wide sandy bay backed by a sea wall and promenade located about 2 miles south of Holyhead. Dog restrictions apply on the southern half of the beach from 1st May to 30th September and beach wardens are on duty from late May to early September.
There are two P&D car parks (6' 6" height restriction) as well as some short term roadside parking. At the northern end of the bay is the RNLI lifeboat station and the Waterfront Restaurant. The Sea Shanty bar / restaurant is just behind the beach, and does excellent breakfasts. Other facilities include a slipway, (seasonal) toilets ♿, drinking water, refreshment vans (in summer), cycle parking, a store / post office and a beach shop. Access to the beach is down steps or the slipway. There are smaller sandy coves with plenty of rock-pools at either side of the bay as well as a few rocky islets in the middle of the bay.
Scuba diving and sailing are popular activities, and surf conditions can be good around mid-tide with a westerly wind - especially when other beaches are blown out. The rocks can be a hazard.