Waikīkī is a beachfront neighborhood of Honolulu, on the south shore of the island of Oʻahu, in Hawaii, United States. Waikiki is best known for Waikīkī Beach, the white sand beach shoreline fronting the neighborhood.
Waikīkī is home to public places including Kapiʻolani Park, Fort de Russy Military Reservation, Kahanamoku Lagoon, Kūhiō Beach Park, and Ala Wai Harbor.
The neighborhood extends from the Ala Wai Canal (a channel dug to drain former wetlands) on the west and north, to Diamond Head (Lēʻahi) on the east. Waikīkī Beach is noted for its views of the Diamond Head tuff cone, its usually warm and cloud-free climate and its surf break.
The Waikīkī skyline is now dotted with an abundance of both high-rises and resort hotels. The beach is actually fairly short, with half of it marked off for surfers. For some distance into the ocean the water is quite shallow, although there are numerous rocks on the bottom. As with most ocean beaches the waves can have some force, particularly on windy days. The surf at Waikīkī is known for its long rolling break, making it ideal for long boarding, tandem surfing and beginners.
Over time, Waikīkī beach has had problems with erosion, leading to the construction of groynes and beach replenishment projects. For example, in the 1920s and 1930s sand was imported from Manhattan Beach, California, via ship and barge to Waikīkī. Importing stopped in the 1970s. Officials are looking for ways to sustain the existing sand by eliminating loss due to tide flow.Subject to permits, a partial restoration was completed in the spring of 2012. The proposed project imported sand from nearby shoals and widened the 1,700-foot (520 m) long beach by about 37 feet (11 m) between the Royal Hawaiian Hotel concrete groin and the Kūhiō Beach crib wall. The project restored the beach to its 1985 shoreline.