Waimea Bay is on the North Shore of O‘ahu in the Hawaiian Islands at the mouth of the Waimea River. Waimea Valley extends behind Waimea Bay.
Waimea Bay is a well-groomed beach park with all the facilities. Diving is excellent around the south point of the bay. Wameia Bay actually has two diving sites on the north and south reefs or each side of the bay. These are really good shore diving sites.