A short guided hike into the windward Koolau to a privately owned 35-foot waterfall. Expect lush forest, wet roots, and a shallow pool perfect for a quick swim—an accessible half-day trip from Kailua or Honolulu.
More ways to explore the area's outdoor wonders
You step off the minivan into the breath of the windward Koolau, where humid air pushes through ferns and the path narrows under a canopy of ʻōhiʻa and hau trees. The guide points up-valley; a distant roar threads through the forest and the trail slips into mossy roots and braided streams. Within a short, steady climb you round a bend and the waterfall drops—35 feet of clear sheet into a shallow pool that dares you to cool off.
Difficulty
moderate
Duration
3 hours
Fitness Level
Moderate fitness: able to manage short uphill sections, uneven footing and a few stream crossings.
Wildlife
History
The Koolau range formed from the Koʻolau shield volcano; valleys were historically used for taro agriculture and small native settlements before modern development.
Conservation
This is private land with limited access—stay on trails, pack out trash, and avoid introducing invasive species (clean shoes and gear) to protect native plants and watershed health.
Reserve your spot on the Oahu Hidden Waterfall Hike: A Tropical Paradise Adventure today and enjoy a trusted, highly rated experience designed to help you make the most of your adventure.
Grip the trail
Wear sturdy trail shoes with good tread; stream crossings and roots make footing tricky even on a short route.
Time it for light
Choose a morning start to avoid afternoon heat and higher visitor numbers on the narrow trail.
Pack a dry bag
Protect phones and cameras—rain and waterfall spray are constant companions in the valley.
Respect private land
Follow guide directions, stay on maintained paths, and don’t remove plants or rocks from the property.
Sturdy trail shoes
Good traction for wet roots and stream crossings keeps you safe on uneven terrain.
Light rain jacket or poncho
Shelters against tropical showers and waterfall spray—keeps you comfortable and warm.
winter
Dry bag or waterproof phone case
Protects electronics and small essentials from spray and sudden rain.
Reusable water bottle (1–2L)
Hydration for the short hike and hot return trip; refill before you start.
summer