What it is
Smith's Fern Grotto Tour is a long-standing, family-operated boat tour on Kauaʻi's Wailua River. It consists of a ride on a large, open-air, flat-bottomed boat from Wailua Marina State Park upriver to the Fern Grotto, a natural lava rock grotto adorned with hanging ferns. The Smith family has been running the tour since 1946. The experience is known for its combination of gentle river cruising, scenery, and live on-board Hawaiian music and cultural storytelling.
Visitor experience
The tour lasts approximately 1 hour and 20 minutes. Guests board a spacious, covered boat with bench seating. The journey up the Wailua River, Hawaiʻi's only navigable river, is narrated with stories and legends of the area, which was once reserved for Hawaiian royalty. Onboard musicians play Hawaiian songs and perform hula.
Upon reaching the Fern Grotto landing, guests disembark for a short walk along a paved, relatively flat path through a lush rainforest setting. The walk leads to a dedicated viewing platform overlooking the Fern Grotto. Due to a rockslide in 2006, visitors can no longer enter the grotto itself but view it from this managed observation area. While at the grotto, performers often sing the "Hawaiian Wedding Song," a tradition for the many couples who have been married or renewed vows there. The return boat ride often includes more music and opportunities for guests to learn some basic hula.
The overall vibe is relaxed, family-friendly, and sometimes described as "old-school" or "classic" Hawaiʻi. It is not an athletic or wilderness adventure.
Logistics
Location: The tour departs from Wailua Marina State Park, adjacent to Smith's Tropical Paradise gardens. The address is 3-5971 Kūhiō Highway, Kapaʻa.
Parking: Free parking is available in a large lot at the marina.
Schedule: Tours typically operate Monday through Friday, with multiple departure times daily. The official website lists departures at 9:30 AM, 11:00 AM, 2:00 PM, and 3:30 PM. It is recommended to verify the current schedule before visiting.
Reservations: Booking in advance online is highly recommended, especially during peak travel seasons. Walk-ups may be accommodated if space is available.
Cost: As of early 2026, ticket prices are $40 for adults (13+), $20 for children (2-12), and free for infants under 2. Prices should be verified on the official website before booking.
Duration: The round-trip experience is consistently reported as 1 hour and 20 minutes.
Accessibility: The pathway to the grotto viewing platform is paved and accessible for wheelchairs and strollers. However, boarding the boat requires navigating approximately six steps. Staff may be able to assist with folded wheelchairs, but there is no ramp onto the vessel itself.
Amenities: Restrooms are available on land at the marina before departure and after returning. There are no restrooms on the boats.
Safety and cautions
Grotto Access: Visitors cannot walk into or under the Fern Grotto. Access is restricted to a viewing platform for safety reasons following a 2006 landslide.
Weather: Tours operate rain or shine. The boats are covered, but mist or rain can enter from the open sides. Walkways can become slippery when wet.
Wildlife/Environment: As with any outdoor activity in Hawaiʻi, mosquitoes can be present, especially after rain. Using insect repellent is advisable.
Vessel Safety: The boats are U.S. Coast Guard certified vessels.
Editorial take
This tour is an excellent fit for multi-generational families, visitors with limited mobility, and anyone seeking a relaxing, gentle introduction to the Wailua River's beauty and cultural significance without physical exertion. The live music and classic presentation are a major draw for those who appreciate a touch of nostalgia and organized cultural entertainment.
Travelers seeking an active adventure, solitude, or an off-the-beaten-path experience should skip this. The tour can feel crowded and "touristy" to some, especially when the boats are full. It should not be confused with the much more physically demanding kayak-and-hike tours that also operate on the Wailua River, which typically lead to a different destination like Uluwehi Falls (Secret Falls). For those who want to see the famed Fern Grotto, this is the only commercial tour option.
Source notes
- Official Website - Tour Information: Provides the official schedule, duration, and description of the tour.
- URL:
https://www.smithskauai.com/fern-grotto/
- URL:
- Official Website - Booking/Pricing Page: The direct booking page confirms current prices for adults and children.
- URL:
https://fareharbor.com/embeds/book/smithskauai/items/1715/
- URL:
- Official Website - FAQ: Confirms key logistical details like accessibility (paved path, six steps onto boat) and the lack of on-board restrooms.
- URL:
https://www.smithskauai.com/frequently-asked-questions/
- URL:
- Hawaii.com - Activity Guide: A reliable travel guide offering a third-party description of the experience, confirming the general flow and highlights of the tour.
- URL:
https://www.hawaii.com/kauai/attractions/smiths-fern-grotto-wailua-river-cruise/
- URL:
