Diamond Head Cruises
About
Diamond Head Cruises has been showing visitors the real magic of Oahu's waters from their Honolulu base for years now. What sets them apart? They keep things small and personal. Instead of cramming dozens of people onto massive boats, they focus on intimate groups where you actually get to know your guides and fellow adventurers.
Their captains know these waters like the back of their hand – every hidden snorkel spot, where the turtles like to hang out, and exactly when the light hits just right for those postcard-perfect sunset moments. Operating right from Honolulu's harbor, they'll take you around the iconic Diamond Head crater and to some lesser-known gems that bigger operators can't access.
Winter months bring something truly special: humpback whale season. From December through March, these gentle giants migrate through Hawaiian waters, and there's nothing quite like watching a 40-ton whale breach right in front of you. The rest of the year, Turtle Canyon remains their crown jewel – a snorkeling spot where Hawaiian green sea turtles practically pose for photos in water so clear you'll think you're swimming in an aquarium.
Want something more private? Their sunset swim charters are perfect for couples, while their custom Waikiki boat experiences can be tailored however you like – whether you're after adrenaline-pumping water sports or just want to drift along soaking up the island vibes.
These folks genuinely care about Hawaii's marine life and ocean health, which shows in how they operate. Ready to see why locals and visitors alike keep coming back to Diamond Head Cruises? Check out their tour options and get ready for the kind of authentic Hawaiian ocean experience you'll be talking about for years.
Activities (4)
Sunset Swim Adventure (Private)
There's something truly special about watching the sun dip behind the Waiʻanae mountains from your own private raft on Oʻahu's south shore. This Sunset Swim Adventure (Private) Honolulu aboard Diamond Head Cruises' high-speed adventure raft gives you and up to 5 friends the freedom to create your perfect evening on the water. Your 2-hour private charter begins at Kewalo Basin Harbor's Pier A, where your certified captain will whisk you along the Waikiki coastline with Diamond Head's dramatic silhouette providing the backdrop. What makes this experience yours is the flexibility—cruise leisurely past scenic beaches, drop anchor wherever looks inviting, or slip into the calm evening waters for a sunset swim. I've seen guests do everything from romantic proposals to bachelor party celebrations out here. Keep your eyes peeled for Hawaiian spinner dolphins and green sea turtles, which love these waters. During whale season, humpback whales often make appearances in the distance. Your crew knows the best spots and will point out wildlife as you cruise. The boat comes stocked with seasonal refreshments, a cooler with ice, and life vests, but feel free to bring your own drinks and pupus to make it truly personal. As golden hour arrives, you'll have front-row seats to one of Oʻahu's most stunning sunsets, with Diamond Head and the colorful sky creating those Instagram-worthy moments. This sunset swim adventure (private) Honolulu requires participants to be age 5 and older, with a maximum of 6 people total. The experience isn't wheelchair or stroller accessible and operates under a firm 48-hour cancellation policy. Starting from $625 for private charters, check-in begins 10 minutes prior to departure at Pier A's gate—I recommend arriving 30 minutes early for parking and to find the pier.
Turtle Canyon Snorkel Adventure (Semi-Private)
Having spent years exploring Oahu's waters, I can tell you that Turtle Canyon ranks among Waikiki's absolute best snorkeling spots. This turtle canyon snorkel adventure (semi-private) Honolulu experience caps groups at just 6 guests, giving you the intimate encounter with Hawaii's marine life that larger tour boats simply can't deliver. Diamond Head Cruises operates from Kewalo Basin Harbor using a nimble 28-foot high-speed zodiac that slips into pristine areas where bigger vessels fear to tread. Your 1 hour 45 minute journey kicks off with a scenic 15-minute coastal cruise to Turtle Canyon. Along the way, spinner dolphins put on year-round shows, while December through April brings the bonus of migrating whales. Once you reach Turtle Canyon, you'll spend 45 minutes to an hour swimming alongside Hawaiian green sea turtles in their natural habitat. The coral reefs here burst with tropical fish, creating an underwater kaleidoscope that never gets old. The experienced crew handles everything – from comprehensive snorkeling instruction to quality gear including masks, fins, and life vests. Even kids as young as 5 can join the adventure. Between dives, munch on complimentary snacks while Diamond Head crater provides the perfect photo backdrop. The high-speed raft design prioritizes safety and comfort, though rough conditions make this unsuitable for pregnant women or anyone with back, neck, or serious health issues. Your turtle canyon snorkel adventure (semi-private) Honolulu package includes a certified captain, experienced guide, all snorkeling equipment, life vests, and refreshments. Meet at Pier A, Slip 15 on Ala Moana Boulevard – arrive 10 minutes early for check-in. Harbor parking runs $2 per hour, and they enforce a strict 24-hour cancellation policy. Starting from $99 per person, this semi-private excursion offers exclusive access to Hawaii's protected marine ecosystem while respecting the endangered sea turtles that make these waters their home.
Custom Waikiki Boat Adventure (Private)
Want complete control over your ocean adventure? This Custom Waikiki Boat Adventure (Private) from Diamond Head Cruises delivers exactly that. Your private 1 hour 45 minute charter aboard a high-speed adventure raft accommodates up to 6 passengers, putting you in charge of designing your perfect Waikiki coastline exploration. Skip the crowded group tours. Your certified captain and experienced guide focus entirely on your group's preferences. Snorkel the famous Turtle Canyon with quality gear and fins provided, or venture to secluded spots away from the masses. Prefer to simply swim and relax? Just anchor in pristine, calm waters. Wildlife lovers can hunt for playful dolphins, sea turtles, and during whale season, those magnificent humpback whales that grace our waters. Craving excitement? The adventure raft delivers heart-pounding high-speed rides. Want stunning photos? Cruise slowly along the coastline with Diamond Head creating the perfect backdrop. You'll enjoy flexible snorkeling and swimming time—hop in and out of the water whenever you please. Complimentary snacks and refreshments keep you fueled throughout the journey. This custom Waikiki boat adventure (private) Honolulu experience works beautifully for families or special celebrations like bachelor parties and birthdays. We welcome guests ages 5 and up, though the tour isn't stroller or handicapped accessible. Your adventure departs from Kewalo Basin Harbor at Pier A, Slip 15. Check in begins 10 minutes before departure. Bring reef-safe sunscreen, swimwear, towels, and a waterproof bag for personal items. Harbor parking runs $2 per hour, and we maintain a firm 48-hour cancellation policy. Starting from $575 for private charters up to 6 people, this Custom Waikiki Boat Adventure (Private) Honolulu delivers VIP treatment and unforgettable memories on the water.
Whale Watching Tour | December - March
From December through March, Diamond Head Cruises offers an unforgettable whale watching tour December - March Honolulu experience aboard their high-speed 28-foot adventure raft—the same type trusted by the U.S. Coast Guard. With just six guests maximum, this intimate 1 hour 45 minute journey along Waikiki's coastline puts you front row for humpback whale encounters. These majestic giants travel thousands of miles to Hawaii's warm waters for breeding and calving, and your certified captain knows exactly where to find them. Using real-time whale activity and recent sightings, they'll adjust routes on the fly to maximize your chances of witnessing spectacular breaching, tail-slapping, and pectoral waving. Sometimes you'll even hear their haunting songs echoing through the water. The high-speed capability means covering more ocean territory while maintaining respectful distances from marine life. Hawaiian spinner dolphins, sea turtles, and flying fish often make surprise appearances during your whale watching tour December - March Honolulu adventure along this biodiverse coastline. Six guests max means everyone gets unobstructed views and personalized attention from the crew. They'll provide complimentary bottled water and local Hawaiian juice, plus there's a cooler with ice if you want to bring your own snacks and beverages. What makes this special? The flexible itinerary follows the whales, not a predetermined route. Each tour becomes unique based on wildlife behavior and seasonal migration patterns. Meet at Kewalo Basin Harbor (1125 Ala Moana Boulevard, Pier A, Slip 15) with check-in starting 10 minutes before departure. Arrive 30 minutes early for parking ($2 per hour) and to locate the pier. This adventure welcomes ages 5 and above, led by certified crew members who blend local knowledge with marine wildlife expertise—creating lasting memories during the humpbacks' annual Hawaiian winter residence.