Rainbow Falls drops 80 feet over a lava cave on the Wailuku River in Hilo, within Wailuku River State Park. The main viewpoint is close to the parking area, so you can see the falls without a long hike. On sunny mornings, sunlight can catch the mist and form a rainbow beneath the cascade. Take a short walk beyond the lookout to see ancient banyan trees and tropical plants. Hawaiian tradition connects the cave behind the falls with Hina, a goddess of the moon.
The falls and the lava cave
Rainbow Falls is on the Wailuku River in Hilo, inside Wailuku River State Park. The water drops about 80 feet over a lava cave, with a viewpoint close to the parking area. It is a straightforward stop if you want to see a waterfall without setting out on a long hike.
The name refers to the rainbow that can form in the falls’ mist when morning sunlight reaches the water. The effect depends on the light, so a sunny morning gives you a better chance of seeing it, but it is not guaranteed.
The story of Hina
Hawaiian tradition associates the cave behind the waterfall with Hina, a goddess of the moon. The falls are also known by the Hawaiian name Waiānuenue. You can take in the setting from the lookout and consider the cultural story connected to the cave without needing to approach it.
Beyond the main viewpoint
A short walk from the viewing area leads past ancient banyan trees and other tropical vegetation. The surrounding greenery gives you another reason to pause after seeing the cascade. Take care around the river: the Wailuku River system can pose a flash-flood risk during heavy rain.
Perguntas frequentes
How tall is Rainbow Falls?
The waterfall drops about 80 feet over a lava cave.
Can you see a rainbow at Rainbow Falls?
A rainbow can appear in the falls’ mist on sunny mornings. Morning light gives you a better chance, though it is not guaranteed.
Do you need to hike to Rainbow Falls?
No long hike is needed. The main viewpoint is close to the parking area.
How long should you spend at Rainbow Falls?
About 15 minutes is enough for a quick stop. Allow extra time if you want to walk among the banyan trees.
