Kauai, often called the “Garden Isle,” is a place where the coastline itself becomes a stage for some of the most stunning ocean scenes in Hawaii. Its rugged cliffs, clear waters, and waterfalls tumbling into the sea make it an ideal backdrop for cruises and boat tours. Whether you’re after an intimate snorkel experience, an exhilarating sail along the Na Pali coast, or a sunset dinner with a glass of champagne, Kauai offers a variety of options that showcase its natural beauty from the water. The island’s marine life—dolphins, turtles, whales—are often part of the show, adding an element of surprise and delight. With so many choices, you’ll want to pick one that suits your interests, fitness level, and budget.
To help you plan, we’ve compiled the 16 best cruises and boat tours in Kauai. From small-group snorkeling adventures to full-day excursions exploring sea caves and snorkeling off the Forbidden Isle of Niihau, there’s something here for every type of traveler.
1. Kauai’s Ultimate Guided Shore Snorkel: South Poipu
At number 1, this small-group snorkeling tour in South Poipu is perfect for those who want to avoid crowded tourist spots. It limits group size to offer more personalized attention, and the focus is on Kauai’s pristine reefs. Expect to see tropical fish, sea urchins, and possibly Hawaiian green sea turtles nesting on the beach or monk seals sunbathing nearby. Guides are well-versed in wildlife and Hawaii’s ecosystem, making this more than just a swim. The tour includes snacks and water, so no need to pack your own. Reviewers highlight Ona’s patience and detailed instruction, even for water-shy travelers. It’s a great choice for families or first-timers who want a safe, intimate experience. Bottom line: a friendly, relaxed snorkel with plenty of marine life and educational insights.
2. Na Pali Coast Kauai Snorkel and Sail
Number 2 on the list, the Na Pali Coast Snorkel and Sail tour is a six-hour voyage aboard a sailing catamaran. It covers 17 miles of coastline—featuring cliffs soaring 4,000 feet, green valleys, and sea caves—and combines snorkeling with sightseeing. The crew provides breakfast, lunch, and drinks, making it a full-service trip. You’ll have chances to spot whales, dolphins, and sea turtles, especially in the spring and early summer. Guides explain the coast’s human history and natural features, enriching the experience. The reviews mention excellent food and attentive service, though some note snorkeling can be brief and the ride a bit ruff. It’s ideal for those who want a mix of relaxation, wildlife watching, and stunning scenery in one trip. Bottom line: a comprehensive, all-inclusive sailing adventure with wildlife and mountain views.
3. Leila Na Pali Sunset Dinner Sail
Number 3, the Na Pali Sunset Dinner Sail offers a leisurely evening aboard a sleek 50-foot catamaran. Starting with mai tais and aloha spirit, you’ll cruise along the Na Pali coast, famous for its 4,000-foot cliffs, waterfalls, and sea caves. During the season (December–April), you might see humpback whales breaching. As the sun sets, enjoy a delicious Hawaiian dinner, drinks, and a Champagne toast, making it a romantic option. The crew also shares stories about the coast’s wildlife and legends. Reviews praise the crew’s attentiveness and the breathtaking scenery, though some note the trip can be bumpy. Best suited for couples or those wanting a relaxed, scenic evening with good food. Bottom line: an elegant sunset cruise that combines spectacular views, local cuisine, and a memorable sunset.
4. Kauai Waimea Canyon, Wailua River Boat and Fern Grotto Tour
Number 4, this full-day tour blends land and water adventures. It includes a scenic drive to Waimea Canyon—often called the “Grand Canyon of the Pacific”—plus a boat cruise down the Wailua River to Fern Grotto. The tour also stops at Opaekaa Falls and historic Koloa Town. The guide shares stories about Kauai’s geology and history, making it educational as well as scenic. Reviews note the comfortable coach and knowledgeable guide, with Waimea Canyon standing out as a highlight. It’s perfect for travelers wanting a rundown of Kauai’s natural wonders without renting a car. The tour is a good value for its extensive itinerary. Bottom line: a full day of diverse sights, combining scenic drives, waterfalls, and river cruises.
5. Na Pali Coast Power Catamaran
Number 5, the Na Pali Coast Power Catamaran tour is a half-day adventure that explores the coast from the water’s perspective. It’s known for its speed and ability to reach sea caves inaccessible to larger vessels. You might see dolphins, turtles, and fish as you cruise along the jagged coastline, with opportunities to snorkel depending on conditions. This vessel’s design offers stability and comfort, making it ideal for those prone to seasickness. The crew serves fresh Hawaiian fruit and beverages, enhancing the trip’s laid-back vibe. Reviewers appreciate the intimate feeling and the chance to see marine life close up. Best suited for active travelers who want a shorter, fast-paced tour with a focus on scenery and marine encounters. Bottom line: a lively, efficient way to see the Na Pali Coast’s highlights.
6. Kauai: Napali Coast Sunset Sailboat Tour with Dinner
Number 6, the Napali Coast Sunset Sail offers a 4.5-hour evening sail with dinner and drinks. You’ll glide past waterfalls, cliffs, and secluded beaches, with chances to see dolphins, seals, and whales in season. As the sun dips behind the cliffs, toast with champagne and enjoy Hawaiian cuisine served on board. The crew provides insightful commentary on the coast’s legends and wildlife, making it a relaxing yet immersive experience. Some reviewers mention rough waters but also praise the crew’s professionalism. Ideal for couples seeking a romantic evening with scenic views and good food. Bottom line: a memorable sunset cruise that combines natural beauty, local flavors, and a sense of celebration.
7. Kauai: Niihau and Na Pali Coast Full-Day Boat Tour
Number 7, the Niihau and Na Pali full-day tour is a long, immersive experience. It visits the remote Forbidden Isle of Niihau for snorkeling at Lehua Crater, along with the stunning Na Pali coastline, sea caves, waterfalls, and hidden beaches. Breakfast and lunch are included, and guides share detailed insights into the areas’ ecosystems and geography. The trip is highly rated for the clarity of waters and the chance to see dolphins, whales (seasonal), and sea lions. It’s best suited for travelers eager to combine snorkeling, sightseeing, and a bit of adventure. The price reflects the comprehensive experience. Bottom line: a full-day adventure for those wanting to see the best of Kauai’s marine and coastal scenery.
8. Kauai: Napali Coast Sail & Snorkel Tour from Port Allen
Number 8 features the Na Pali Coast Sail & Snorkel, a 4.8/5-rated trip from Port Allen. It combines sailing along the coast with snorkeling in tropical reefs. Food and drinks, including beer and wine, are served onboard, making it perfect for relaxing while enjoying the scenery. Marine life sightings include fish, turtles, and dolphins, with potential whale sightings in season. The crew is attentive, and the small group size ensures personalized service. Reviewers highlight the smooth ride and the chance to see sea caves. This trip suits those who want a laid-back, scenic experience with an emphasis on snorkeling and marine wildlife. Bottom line: a comfortable, friendly tour that blends sailing with marine exploration.
9. Cruise Ship Shore Excursion: Kauai Journey to Waimea Canyon
Number 9, this cruise ship shore excursion is designed for cruise visitors. It offers a 5-hour trip to Waimea Canyon, the “Grand Canyon of the Pacific,” with stops at Spouting Horn and Hanapepe Valley. The tour includes a scenic drive past the Haʻupu Mountain Range and provides insights into Hawaiian history. Reviewers praise the comfortable, air-conditioned bus and knowledgeable guide, making it a good option for those with limited time. You’ll see colorful canyon vistas and learn about Kauai’s early Portuguese and sugar industry history. It’s a practical, well-organized way to enjoy Kauai’s top sights without a rental car. Bottom line: a short, informative tour for cruise visitors wanting a taste of the island’s rugged beauty.
10. Kauai Northeast Tour, Fern Grotto River Cruise & Lighthouse
Number 10, the Northeast Kauai Tour combines scenic coastal views with a river cruise. It takes you past Sleeping Giant, Hanalei taro fields, and Anini Beach, ending with a visit to the Kilauea Lighthouse. The riverboat cruise to Fern Grotto is a highlight, giving travelers close-up views of lush scenery. The guide shares stories about the island’s culture and environment, making it educational. Reviewers appreciate the friendly atmosphere and the variety of sites covered in six hours. This tour fits travelers seeking a balance of land and water experiences on Kauai’s lush northeast coast. Bottom line: a comprehensive tour of Kauai’s scenic northeast with a focus on nature and local culture.
11. Ultimate Na Pali Coast Zodiac Boat Snorkeling and Sea Cave Tour
Number 11, the Zodiac Na Pali Coast tour offers a more intimate experience. Traveling by Zodiac boat allows access to small sea caves and secluded snorkel sites inaccessible to larger vessels. It’s limited to 14 guests for personalized service. The tour includes snorkeling, exploring sea caves, and enjoying waterfalls. Guides are ecologists who provide insights into marine life and the coast’s geology. Many reviews mention the thrill of going inside caves and the opportunity to see marine animals up close, including dolphins and turtles. It’s best suited for active travelers craving adventure and small-group intimacy. Bottom line: a fast-paced, personal tour for those who want to explore Kauai’s most dramatic coastal spots.
12. Kauai Catamaran Sunset Cruise
Number 12, the Kauai Catamaran Sunset Cruise offers a 1.5-hour evening sail. It’s perfect for winding down after a day of exploring, as you sip tropical cocktails and watch the sun set over Nawiliwili Bay. The boat passes the Alekoko Fish Pond and the Hulei’a Wildlife Refuge, with commentary on local history. While some reviewers mention cloudy sunsets, most find the peaceful water, beautiful scenery, and friendly crew make up for it. It’s ideal for those seeking a short, relaxed experience with scenic views and a touch of romance. Bottom line: an easygoing, scenic sunset cruise with drinks and gentle sea breezes.
13. Kauai’s Ultimate Boat 2 Tank Adventure Dive Certified Divers Only
Number 13, this certified divers’ boat tour is tailored for experienced underwater explorers. It departs from Poipu and takes just four hours, but packs in two dives into Kauai’s calm, clear waters. Expect encounters with Hawaiian reef fish, turtles, eels, and crabs, as well as pristine coral formations. The small group (up to seven) ensures personal attention and safety. Reviewers mention the excellent reef conditions and the chance to see lots of wildlife, making it a favorite for certified divers wanting a quick, high-quality experience. Bottom line: a focused, intimate dive trip for certified enthusiasts eager to explore Kauai’s underwater world.
14. Cruise Ship Shore Excursion: Kauai Movie Sites Tour
Number 14, the Movie Sites Tour is tailored for film fans. It takes you to iconic Kauai locations seen in movies like Jurassic Park, South Pacific, and Raiders of the Lost Ark. The tour lasts about six and a half hours, with stops at Hanamaulu, Kapa’a Town, and Kilauea Lighthouse, while sharing film clips and behind-the-scenes stories. Reviewers enjoy the fun mix of sightseeing and movie trivia, plus the convenience of a guided, air-conditioned minibus. Perfect for those who want an engaging, culturally interesting experience during a cruise stop. Bottom line: a lively tour that combines scenery with Hollywood history.
15. Kauai Napali Sunset Dinner Cruise
Number 15, the Napali Sunset Dinner Cruise offers a 3.5-hour ride along the coast, with a Hawaiian-style dinner, drinks, and champagne at sunset. It’s a family-friendly option to enjoy the coast’s cliffs, waterfalls, and caves from the water, with possible sightings of manta rays, dolphins, and whales. The crew shares local legends and history, providing context to the spectacular scenery. Reviewers mention the lively atmosphere and the good food, making it a popular choice for celebrating a special evening. It’s suited for travelers seeking a relaxed yet memorable dinner cruise. Bottom line: a scenic, delicious way to end a day on Kauai with a view of the coast’s natural drama.
16. Try Scuba Diving in Kauai From a Boat for Non-Certified Divers
Number 16, this introductory scuba experience is perfect for non-certified divers. You don’t need a license—just a willingness to get wet. It offers two guided dives, with a maximum of eight divers per group, to explore Kauai’s vibrant reef ecosystems. Turtles, manta rays, and over 1,250 species native to Hawaii are possible sightings. Reviewers highlight the professionalism of the staff and the excitement of seeing marine life up close. It’s a good fit for first-timers or those wanting a taste of underwater adventures. Bottom line: a safe, friendly introduction to scuba for those who aren’t certified but want to experience Kauai’s underwater world.
How to Choose the Right Kauai Boat Tour
When selecting your perfect boat trip, consider your budget, time available, and interests. If you want a quick, scenic sail with drinks, the Kauai Catamaran Sunset Cruise is ideal. For a full immersion into the coastline’s natural wonders, the Niihau and Na Pali Coast full-day or Zodiac snorkel tours might be better. Budget travelers should look for shorter excursions like the Waimea Canyon cruise or the shore snorkeling. Those with a passion for marine life and underwater exploration might prefer the 2-tank dive or scuba for non-certified divers. Booking early is recommended, especially for popular tours like the Na Pali Coast trips.
Final Thoughts
Kauai’s diverse boat tours showcase its remarkable coastline—from snorkeling among sea turtles to sailing past towering cliffs at sunset. For those seeking a quick taste, the shore snorkel offers a safe, intimate experience. Adventure travelers will love the Zodiac and full-day Na Pali explorations, while romantics can opt for the sunset dinner sails. Whichever suits your style, booking early ensures you don’t miss out on Kauai’s unforgettable ocean scenes. With so many options, you’re bound to find a boat tour that makes your trip truly memorable.