Rainbow Falls: A Must-Visit Waterfall on the Big Island, Hawaii

One of the most famous waterfalls is Rainbow Falls on the Big Island of Hawaii, known in Hawaiian as Waianuenue, meaning “rainbow water.” This breathtaking waterfall is located just outside Downtown Hilo and is one of the easiest to access, making it a must-visit for anyone exploring the island’s lush east coast.

After an incredible visit to ʻAkaka Falls, we made our way towards Rainbow Falls, driving through historic Downtown Hilo. Along the way, we passed buildings that date back to the early 1900s, a reminder of the island’s plantation-era past. Hilo, one of the oldest towns in Hawaii, has long been shaped by sugarcane production, immigrant communities, and natural disasters. Although Hawaii has experienced multiple tsunamis over the years, many of its historic buildings have endured, offering insight into the island’s rich past.

Leaving the town behind, we began our ascent up the Wailuku River, a waterway deeply rooted in Hawaiian mythology. Within a few minutes, we arrived at our destination—Rainbow Falls, a place that truly lives up to its enchanting name.

The Beauty of Rainbow Falls

Rainbow Falls is part of Wailuku River State Park, a lush, green oasis filled with tropical foliage. Unlike many other Big Island waterfalls requiring a hike, Rainbow Falls is just steps away from the parking lot, making it one of the most accessible waterfalls for visitors of all ages and abilities.

As we approached the main viewpoint, we were immediately struck by the sheer beauty of the falls. Water cascades 80 feet (24 meters) down a lava cave and into a wide pool below, creating a mist that often refracts the morning sunlight, forming stunning rainbows—hence its name.

Why Are There Rainbows at Rainbow Falls?

Rainbows are an important symbol in Hawaiian culture, often believed to be a bridge between the spiritual and physical worlds. The frequent rainbows at Rainbow Falls occur due to the fine mist created by the waterfall and the way it interacts with the morning sunlight. This is why the best time to visit is early in the morning when the sun is still low in the sky.

The Legend of Hina – The Goddess of the Moon

Like many natural landmarks in Hawaii, Rainbow Falls is steeped in mythology. According to Hawaiian legend, the lava cave behind the waterfall is the home of Hina, the Hawaiian goddess of the moon.

Hina is one of the most well-known figures in Hawaiian mythology and is often depicted as a powerful and wise woman. She is said to be the mother of Māui, the legendary demigod who is credited with slowing the sun and pulling up the Hawaiian Islands from the ocean.

As the story goes, Hina lived in the cave behind Rainbow Falls, watching over the land and its people. However, she was constantly tormented by a mo‘o (giant lizard or dragon-like creature) that lived in the Wailuku River. The mo‘o would cause flooding and destruction, making life difficult for the people of Hilo.

One day, her son Māui heard her cries for help and set out to defeat the beast. Using his great strength and magical fishhook, Māui battled the mo‘o, eventually killing it and casting its body down the river, where it turned to stone. Today, some say that the jagged rocks downstream represent the remnants of the defeated creature.

Exploring the Area Around Rainbow Falls

While the main viewing platform offers a fantastic perspective of the falls, the real adventure begins when you explore the trails that lead above and behind the waterfall.

We followed a short but scenic trail that took us up a stone staircase to a higher vantage point, offering a breathtaking birds-eye view of Rainbow Falls. From here, we could better appreciate the lush jungle surroundings, the massive mango trees, and the powerful rush of water flowing into the pool below.

The Massive Banyan Tree

Continuing along the trail, we eventually arrived at one of the most awe-inspiring Banyan trees we’ve ever seen. Banyan trees are remarkable for their ability to drop aerial roots from their branches, which then grow into new trunks. Over time, these roots form a dense network, allowing a single tree to cover several acres of land.

This particular Banyan tree was absolutely massive, its sprawling limbs creating a natural fortress of twisted roots and hanging vines. Standing beneath it, we felt as if we had stepped into an ancient, sacred place, where time seemed to slow down.

Banyan trees are often associated with Hawaiian spirituality and are considered symbols of wisdom, endurance, and protection. In many cultures, including Hindu and Buddhist traditions, Banyan trees are seen as sacred and a place of enlightenment.

Wildlife and Plant Life Around Rainbow Falls

The area around Rainbow Falls is home to a diverse ecosystem filled with native and introduced plant species. Some of the most common plants you’ll see include:

🌺 Hibiscus – Hawaii’s state flower, known for its vibrant red, yellow, and pink blooms.
🌴 Ti Plants – Used in Hawaiian hula ceremonies and believed to bring good luck.
🍍 Guava and Mango Trees – Brought by early immigrants, these trees now flourish in the wild.
🌿 Ferns and Bamboo – Thriving in the humid climate of Hilo’s rainforest region.

If you’re lucky, you might also spot Hawaiian wildlife, including:

🦜 Mynah Birds – Chatty birds introduced from Asia.
🦋 Kamehameha Butterflies – One of Hawaii’s two native butterfly species.
🦎 Geckos – Colorful and often found basking in the sun.

Tips for Visiting Rainbow Falls

If you’re planning to visit Rainbow Falls, here are some useful tips to enhance your experience:

• Visit in the Morning – The best time to see the rainbow effect is early in the morning when the sunlight hits the mist at the right angle.
• Wear Comfortable Shoes – Sturdy shoes are recommended if you plan to explore the trails above the falls.
• Bring a Camera – Whether you’re capturing the waterfall, the giant Banyan tree, or a rainbow, you’ll want to take plenty of photos.
• Check the Weather – Hilo is one of the rainiest cities in the U.S., so it’s best to be prepared for occasional showers.
• Respect the Land – As with all places in Hawaii, be mindful of nature and cultural sites. Avoid climbing on sacred trees and leave no trace.

Experience Rainbow Falls with a Guided Tour

For those looking to explore Rainbow Falls and other breathtaking waterfalls on the Big Island, consider joining the Big Island Waterfalls Adventure Tour with Wasabi Tours Hawaii. This small-group, full-day tour takes you beyond the typical tourist spots, guiding you to hidden waterfalls, lush rainforests, and scenic coastal cliffs. In addition to Rainbow Falls, you’ll visit ʻAkaka Falls, private waterfalls on a working farm, and the famous Waipi‘o Valley lookout. With a knowledgeable local guide providing cultural insights, history, and fascinating stories along the way, this tour is the perfect way to experience the island’s natural beauty without the hassle of planning your own itinerary. Book your adventure today and immerse yourself in the magic of Hawaii’s waterfalls!