Waiānuenue: Chasing Rainbows at Hilo’s Iconic Waterfall

You turn off the single-lane road into a pocket of damp green and the air shifts: cooler, fragrant with wet earth and guava, threaded with the thin hiss of falling water. The trail to Rainbow Falls—Waiānuenue in Hawaiian—is more like a quiet procession of ferns and ʻōhiʻa trees that open to a natural theater. At the lip of the lookout, the stream vanishes as it drops 80 feet into a fern-ringed plunge pool, and light slices through the mist to paint a transient rainbow across the curtain of water. It’s a small, cinematic moment—the kind that turns an ordinary day into a memory you revisit every time you see a bow in the sky.