Rainbow Falls create a rare instance where a Hawaiian name and an English name actually mean the same thing. Known to Hawaiians as waianuenue, the name is a reference to the arcing rainbows that can be seen in the waterfall’s mist. The image, it seems, is a natural occurrence of such beauty and wonder that it transcends linguistic lines, and today the waterfall is one of the most popular attractions when visiting the town of Hilo.
Only 50 yards from a paved parking lot in Wailuku River State Park, a large viewing area provides the best platform for gazing out at the falls. To see the waterfall’s namesake rainbow, visit the falls around 10 a.m. when the angle of light is just right. Behind the falls, a large cave forms the home of Hina—the mythological Hawaiian god who gave birth to the demigod Maui—and the turquoise pool and surrounding rain forest are the trademark photo of paradise.
Rainbow Falls is located two miles from downtown Hilo and is open from sunrise to sunset. There is no admission fee to Wailuku State Park, and while the crystalline pool looks inviting for swimming, this is a waterfall best enjoyed from afar.