Wailua River State Park
Wailua River State Park on Kauai encompasses lush rainforests, historic sites, and the only navigable river in Hawaii. Visitors can explore ancient Hawaiian temples (heiau), enjoy scenic boat tours, and view stunning waterfalls such as Opaeka‘a Falls, making it a hub for both recreation and cultural discovery.
Free
Visiting with Dogs
Dogs are not allowed at Wailua River State Park, including all trails and facilities. Service animals permitted.
Visitor Tips & Reviews
What Visitors Say
Visitors love Wailua River State Park for its lush scenery, kayaking, waterfalls, and historical sites like Fern Grotto, making it a favorite for nature lovers and families.
Tips from Visitors
- Arrive early to avoid crowds and secure parking.
- Bring insect repellent for comfort along trails.
- Wear sturdy shoes for uneven terrain.
- Respect cultural sites and posted signs.
- Kayak rentals available for river exploration.
- Pack water and snacks for your visit.
Amenities
Nearby Attractions
Explore these attractions near Wailua River State Park:
- Opaeka‘a FallsA picturesque 151-foot waterfall easily viewed from a roadside lookout within the park.1 mile away
- Fern GrottoA lush, fern-covered cave accessible by boat tour along the Wailua River, famous for its unique acoustics and tropical beauty.2 miles away
- Lydgate Beach ParkA family-friendly beach with protected swimming areas and picnic facilities, located just south of the Wailua River mouth.2.5 miles away
Things to Do at Wailua River State Park
Camping at Wailua River State Park
Camping is not available at Wailua River State Park; consider nearby county parks or private campgrounds.
Hiking Trails
Wailua River State Park offers scenic day hikes along lush riverbanks, with trails leading to beautiful waterfalls and ancient Hawaiian sites. Hikers enjoy the peaceful atmosphere, tropical vegetation, and opportunities to spot native birds. The trails are generally easy to moderate, making them suitable for families. Kayaking and boat tours are also popular, providing unique access to hidden gems like Fern Grotto and Secret Falls.
Nounou East (Sleeping Giant) Trail
ModerateA scenic trail leading to panoramic views of the Wailua River Valley and the eastern coastline.
Kuilau Ridge Trail
EasyA lush ridge hike offering views of the Makaleha Mountains and Wailua River basin.
Opaeka‘a Falls Lookout Trail
EasyA short, accessible trail to a viewpoint overlooking the beautiful Opaeka‘a Falls and Wailua River.
Wailua River Kayak & Hike to Secret Falls (Uluwehi Falls)
ModerateA combined kayak and hiking route through lush rainforest to the stunning Secret Falls.
Directions
From Lihue, take Kuhio Highway (HI-56) north for about 6 miles. The park entrance is on the left, just past the Wailua River bridge.
Contact & Info
Frequently Asked Questions
What activities can I do at Wailua River State Park?
Popular activities include kayaking, boating, hiking, and visiting historical sites like Fern Grotto and Opaeka‘a Falls. Guided tours are also available.
Are there any entrance or parking fees at Wailua River State Park?
There is no entrance fee for the park itself, but some attractions within the park, like Fern Grotto, may have separate fees. Parking is generally free.
Is swimming allowed in the Wailua River?
Swimming is not recommended due to strong currents and potential health risks. Most visitors enjoy the river by kayak, boat, or paddleboard instead.
Are there restroom and picnic facilities available?
Yes, there are restrooms and picnic areas at several locations within the park, including near Opaeka‘a Falls and the boat launch area.
Can I visit Fern Grotto on my own?
Fern Grotto is accessible only by boat. Most visitors reach it via guided riverboat tours, which depart regularly from the marina.
Is the park suitable for families with children?
Yes, Wailua River State Park is family-friendly, offering easy walks, scenic viewpoints, and safe picnic spots. Supervision is recommended near water and cliffs.

Don’t Forget the Essentials
Essential camping & hiking gear we recommend to make your park trip easier and more comfortable.
View Gear Checklist →