If you are planning a trip to Hawaii Big Island , chasing waterfalls should absolutely be on your itinerary . The island’s lush Hilo side, tropical rainforests or volcanic landscapes create some of the most beautiful waterfalls in the Hawaiian Islands .
Many travelers search for big island waterfalls you can swim in because there nothing quite like floating in a natural pool beneath a cascading waterfall . Several waterfalls on the island allow swimming, especially along the scenic Hāmākua Coast and near Hilo . This guide highlights the best big island waterfalls you can swim in, plus practical travel tips to help you visit safely and make the most of your adventure .
Rainbow Falls
One of the most accessible waterfalls near Hilo , Rainbow Falls sits inside Wailuku River State Park . The 80 foot waterfall flows over a lava cave and is surrounded by lush tropical vegetation . While many visitors simply admire the view from the overlook , adventurous travelers sometimes swim in the river below when conditions are calm .
Early mornings are especially magical here . The rising sun often creates rainbows in the mist . Swimming conditions vary depending on rainfall, so always check water levels before entering .
Kulaniapia Falls
Located on private property just outside Hilo, Kulaniapia Falls is one of the most peaceful big island waterfalls you can swim in . The 120-foot waterfall flows into a large swimming pool surrounded by jungle .
Access is primarily available to guests staying at the nearby eco lodge, making it far less crowded than many public waterfalls . The setting feels incredibly secluded and the swimming area is usually calm . Kayaking and paddleboarding are sometimes available in the pool as well .
Umauma Falls
Situated along the dramatic Hāmākua Coast, Umauma Falls is a beautiful three tiered waterfall surrounded by tropical cliffs and dense greenery . Visitors can access swimming areas through the Umauma Experience, an adventure park offering ziplining and guided tours .
The lower pool is often calm enough for swimming and the scenery here feels like something straight out of a movie . Nearby, you’ll find spectacular coastal views and scenic drives along the Hawaiʻi Belt Road, making it easy to combine waterfall stops during a road trip .
Peʻepeʻe Falls and Boiling Pots
Just upstream from Rainbow Falls, you’ll find the fascinating Peʻepeʻe Falls and the natural formations known as Boiling Pots . While swimming here requires caution due to changing water levels, calmer sections of the river can sometimes be safe during dry conditions .
The area features lava rock formations where the river appears to “boil” as water rushes through underground lava tubes. Because flash floods can occur, visitors should avoid swimming after heavy rain and always respect warning signs .
Best Time to Visit
The best time to explore big island waterfalls you can swim in is during Hawaii’s dry season, typically from April through October .
During this time, rivers are usually calmer and safer for swimming. The weather is also sunnier, especially along the Hilo and Hāmākua Coast regions .
Budget Expectations
Visiting waterfalls on the Big Island is generally affordable since many sites are free or located in public parks .
Typical costs include
- Car rental : $60–$120 per day
- Park entrance fees : usually free or under $10
- Guided tours or private access waterfalls : $25–$150
Travelers staying near Hilo will be closest to many of the island’s best waterfall destinations .
Sample Waterfall Day Trip Itinerary
If you are based in Hilo, you can easily visit several waterfalls in one day .
Morning
- Start at Rainbow Falls
- Drive to Boiling Pots
- Breakfast in downtown Hilo
Midday
- Visit Akaka Falls State Park
- Continue north along the Hāmākua Coast
Afternoon
- Stop at Umauma Falls
- Scenic drive toward Waipio Valley
This route combines several of the most beautiful waterfalls on the island.
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FAQ’s
Which waterfalls on the Big Island allow swimming ?
Some of the most popular big island waterfalls you can swim in include Kulaniapia Falls, parts of the Wailuku River near Rainbow Falls and pools at Umauma Falls .
Are Big Island waterfalls free to visit ?
Many waterfalls like Rainbow Falls are free. Others located on private land or adventure parks may charge an entrance fee.
What side of the Big Island has the most waterfalls ?
The Hilo side of the island receives more rainfall, which creates the largest concentration of waterfalls in Hawaii.
Can you swim at Akaka Falls ?
No, swimming is not allowed at Akaka Falls State Park but the waterfall is still one of the most beautiful attractions on the island .
What should I bring to a waterfall hike ?
Bring water shoes, insect repellent, a towel, sunscreen and a waterproof bag to protect electronics from spray.
Conclusion
Exploring big island waterfalls you can swim in is one of the most unforgettable experiences in Hawaii . The island’s lush rainforests, volcanic cliffs and tropical rivers create perfect settings for waterfall adventures .
From the accessible beauty of Rainbow Falls to the secluded charm of Kulaniapia Falls, each location offers a different way to experience the wild side of the Big Island. With a little planning and attention to safety, you can discover some of the most refreshing natural swimming spots in the Hawaiian Islands .
