Poipu beach in hawai is a beautiful beach. Poʻipū in Hawaiianis a census-designated place (CDP) in Kauaʻi County on the southern side of the island of Kauaʻi in the U.S. state of Hawaiʻi. Poipu Beach is around 1,000 feet long and the most popular beach on the South Shore. Swimming here is almost always safe. This beach has extensive facilities for visitors. It provides restrooms, picnic tables, showers, a playground, walkways, and lifeguards.