Hanalei Bay is the largest bay on the north shore of Kauaʻi island in Hawaii and was named as one of the world's top 100 beaches by CNN. The town of Hanalei is at the midpoint of the bay.
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. The Princeville community overlooks from the northeast entrance to the bay of Hanalei River. During the winter the surf becomes large and is a favorite surf location.
The wetlands of Hanalei Bay were used to grow taro by ancient Hawaiians.
It is also site of the Hanalei Ocean Swim.