Hanalei Bay is the largest bay located on the north shore of Kauaʻi island in Hawaii. The town of Hanalei is at the mid-point of the bay. Behind the beach is an absolutely breathtaking backdrop of waterfalls and emerald mountains shrouded in mist, soaring thousands of feet into the air. The beach is two miles long, 125 meters wide, and bordered by the Hanalei River to the east and the Waipa River to the west. Hanalei Bay consists of nearly two miles of beach, surrounded by mountains. In the summer, the bay offers excellent mooring for sailboats, stand up paddle boarding and swimming. During the winter the surf becomes large and is a favorite surf location.