Best Hilo Waterfalls: Akaka Falls, Rainbow Falls & More

Hilo sits on the wetter, greener side of Hawaiʻi Island, where trade winds and steep volcanic slopes conspire to keep streams running year-round and forest canopies thick. That combination creates a waterfall scene with real variety: roadside lookouts that deliver instant payoff, short rainforest loops that feel far removed from town, and dramatic river features that show how quickly water can change character as it drops through basalt channels. Planning matters here more than on drier coasts—rainfall can shift conditions fast, and the best stops are often defined as much by access and safety as by height or volume.

What makes Hilo-area falls especially compelling is the setting. Many cascades pour through ʻohiʻa and fern-lined gulches, with the dark, young geology of the island on full display. In a single morning, it’s possible to move from a classic viewpoint like Rainbow Falls—an 80-foot drop framed by lush greenery—to the wilder feel of the Wailuku River corridor at Boiling Pots, where churning pools and narrow channels showcase the river’s power. This is waterfall viewing with context: rainforest ecology, volcanic rock, and a working local town nearby rather than a remote resort zone.

The selections in this guide focus on places that visitors can realistically incorporate into a Hilo itinerary. Each pick earns its spot through a mix of reliable access, clear viewing opportunities, and an experience that feels distinct from the next stop. Accessibility ranges from quick pull-offs to paved trails, and the list leans toward locations that are straightforward to navigate for most travelers without specialized gear. At the same time, it avoids suggesting risky swimming or informal routes where conditions can turn hazardous—especially after heavy rain, when flash flooding and slick rock become real concerns.

Several of these waterfalls also offer a strong “sense of place” that goes beyond the photo. ‘Akaka Falls stands out for its easy loop walk through dense rainforest to a commanding viewpoint, an ideal choice for travelers who want a short, well-maintained trail with dramatic results. For those looking to pair waterfall scenery with a broader outing on the Hāmākua Coast, Umauma Falls adds a different scale and setting, with multiple tiers and a landscape shaped by deep gulches and plantation-era geography.

Use this introduction as a framework, then follow the curated list below for the most worthwhile Hilo waterfall stops—along with practical notes on timing, access, and what to expect at each location.