Difficulty
Moderate
Trail Length
2.4 miles
Trail Type
Out And Back
Elevation Gain
350 ft
About Aa Falls
Aa Falls is a lesser-known, secluded cascade tucked into the lush tropical landscape of Hawaii’s Kohala Forest Reserve. Managed by SDNR and designated as an SCA, the waterfall offers a peaceful setting framed by dense native vegetation and the kind of quiet you find off the beaten path. Specific details about the falls’ height are not well-documented, which adds to its low-key, exploratory appeal for hikers who prefer quieter sites over crowded lookouts. Access to the falls is via a moderate out-and-back hike through the forest reserve. The route and land stewardship fall under SDNR management, so visitors should observe posted rules and respect the protected area while enjoying the natural scenery. The trail’s moderate rating and forested approach make Aa Falls an appealing day trip for hikers looking for a green, restorative experience rather than a strenuous scramble.
The Setting
Aa Falls sits at 2,188 feet within Kohala Forest Reserve, fed by the Alakahi Stream, in the hills of Hawaii.
Trail & Hike Details
The Approach
The moderate 2.4-mile out-and-back trail gains 350 feet of elevation on the way to the falls.
Trail Description
Trail: out-and-back, 2.4 miles round-trip with approximately 350 feet of cumulative elevation gain; difficulty: moderate. The trail is located within the Kohala Forest Reserve (managed by SDNR, designated SCA). Detailed surface, grade, and technical trail class are not specified in the available management data, so expect a natural, unpaved forest route and come prepared with sturdy footwear, insect protection, and rain-ready clothing.
What to Expect
Visitors can expect a tranquil waterfall surrounded by lush greenery. The area may be remote and less crowded, offering a peaceful experience.
Accessibility
The trail is not wheelchair accessible. Uneven terrain and elevation changes require steady footing.
Frequently Asked Questions
🐶 Are Dogs Allowed at Aa Falls?
❌ Dogs are not allowed
Are There Any Fees or Permits Required?
🆖 No fees required
🏊 Is There Swimming at Aa Falls?
❌ Swimming is not allowed
When to Visit
The waterfall can typically be visited year-round, but weather conditions may vary. Dry seasons may offer easier access.
Seasonal Access
The best time to visit is Spring, Summer, Fall, and Winter. Heavy rains during wet season (November through March) bring higher flow but can make trails slippery.
Safety Information
Visitors should be cautious of slippery rocks, sudden weather changes, and potential flash floods. Always prioritize safety and avoid risky areas.
Current Water Conditions
18 ft³/s
Current discharge — how much water is flowing
Much higher than usual for this time of year
Based on 61 years of record
2.62 ft
Water depth at gauge
7-Day Discharge Trend
What does this mean for your visit?
The water is flowing much higher than usual, expect an impressive display.
About This Gauge
Weather Forecast
Location & Access
Getting There
The exact location and directions to Aa Falls are not widely documented. Visitors are advised to consult local guides or resources for accurate directions.
Get Directions on Google MapsParking
Parking availability is unclear. It is recommended to check with local authorities or nearby facilities for parking options.
Elevation
2188 feet above sea level
Coordinates
20.091140° N, -155.621598° W
Land Management
Managed by SDNR
Visitor Tips & Gear
Bring sturdy footwear, water, and insect repellent. Check weather conditions and consult local resources for trail and access updates.
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With 2.4 miles and 350 ft of elevation gain, sturdy boots and trekking poles will help on this moderate trail. Icy conditions are common in winter — traction cleats are a smart addition.
Columbia Watertight II Rain Jacket
Packs into its own pocket, seam-sealed, and keeps you dry from spray and surprise rain.
Earth Pak Waterproof Dry Bag
Keeps your phone and gear dry when waterfall mist soaks everything else.
Waterproof Phone Pouch (AiRunTech)
Cheap insurance — take photos right next to the falls without killing your phone.
Timberland Euro Sprint Mid Waterproof
Trusted waterproof boot with premium leather and grippy rubber sole — reliable on rocky, wet trails.
TrailBuddy Trekking Poles
Lightweight aluminum, cork grips, and flip-locks that actually hold — a best-seller for good reason.
Kahtoola MICROspikes
Cult-favorite traction cleats that grip ice and wet rock — essential for winter waterfall hikes.
Where to Stay
The Westin Hapuna Beach Resort
Fairway Villas Waikoloa by OUTRIGGER
Palm Villas 2 Bed/2 Bath Loft #F22
Hilton Waikoloa Village
Browse vacation cabins and private rentals nearby
Unique outdoor stays — tents, yurts, and treehouses
Rent a campervan or RV for your waterfall road trip
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Nearby Attractions
Hawaii offers numerous natural attractions, including other waterfalls, beaches, and hiking trails. Consult local guides for recommendations.
Wildlife
The area may feature native Hawaiian flora and fauna. Visitors should respect wildlife and avoid disturbing the natural habitat.
