Waterford Harbour is a large, sheltered bay and estuary system at the mouth of the River Suir in southeast Ireland. The harbour entrance is marked by Hook Head on the County Wexford side and Dunmore East on the County Waterford side, creating a wide, well-marked approach. For paddlers, the primary launch and take-out points are found in the picturesque fishing village of Dunmore East, which sits on the western side of the harbour entrance. Dunmore Adventure, a local provider, offers guided kayaking and stand-up paddleboarding tours from here, utilizing the sheltered coves along the cliffs that are suitable for beginners. The harbour itself is a significant tidal estuary. Tidal streams outside the entrance are relatively weak, not exceeding 1 knot at springs, but strong currents develop inside the estuary, particularly in the channels, where they can reach up to 3 knots at places like Passage East. The flood tide begins approximately two hours after high water at Dover, and the ebb begins about five hours before high water at Dover. Planning a paddle to work with these currents is essential, as paddling against a strong ebb is difficult. The area is exposed to southwesterly winds, and while the outer harbour can develop chop, the coves near Dunmore East provide protection. The waterway is a major shipping channel leading to the Port of Waterford, so paddlers must remain aware of commercial and recreational boat traffic, including ferries between Ballyhack and Passage East. Key sights from the water include the dramatic red sandstone cliffs of the Dunmore East coastline, the historic Hook Lighthouse guarding the entrance, and views of several coastal villages. The coastline features hidden sea caves and secluded pebble beaches like Portally Cove, accessible from the water or via cliff paths. Wildlife includes seabirds such as kittiwakes, cormorants, and choughs. Facilities for paddlers are centered in Dunmore East, with activity providers offering equipment hire and guided trips. The Waterford Harbour Sailing Club is also based in the area, indicating active marine leisure use.