Rosario Islands Colombia: Complete Guide to Private Boat Tours [2026]

The Rosario Islands sit 45 kilometers southwest of Cartagena in a stretch of the Caribbean that most tourists never reach by boat — they see it from the airplane window and assume access is complicated. It is not. A private speedboat from the city puts you anchored in water clear enough to see the reef 10 meters below, in under an hour, without a single stranger on board.

The archipelago has 27 islands, a coral reef system that ranks second in Colombia only to San Andrés, and enough distinct environments — mangrove channels, party bays, white-sand beaches, protected lagoons — to fill two or three different day trips. Most visitors only scratch the surface because they take the public ferry and follow a fixed route. With a private charter, you choose which islands you visit, when you arrive, and when you leave.

What Are the Rosario Islands and Why They’re Colombia’s Best Day Trip

The Archipiélago del Rosario is a UNESCO-recognized marine protected area — officially part of the Parque Nacional Natural Corales del Rosario y de San Bernardo, one of the most biodiverse coral reef systems in the Western Caribbean. The park covers roughly 120,000 hectares of ocean, seagrass beds, mangroves, and coral reef across 27 islands and dozens of smaller cays.

Underwater visibility in the archipelago typically runs 10–20 meters during dry season (December–April), dropping to 6–12 meters in rainy season when river outflow from the Colombian mainland slightly reduces clarity. Even at lower visibility, the reef density is exceptional — brain corals, staghorn, elkhorn, and plate corals are all present in shallow water accessible without scuba gear.

The reason the Rosario Islands work especially well as a private charter destination is access timing. The public ferry departs Muelle de los Pegasos at a fixed hour, arrives when the other 80 passengers arrive, and returns at a fixed afternoon hour. A private boat charter from Cartagena departs on your schedule — which in practice means arriving at the snorkel spots before the ferry crowds, and staying as long as you want at the beach. Captains who run this route recommend departing between 7:30 and 8:30am to get the best light, calmest water, and least crowded conditions at every stop.

One detail most visitors miss: the national park charges an entry fee of approximately $6 USD per person, collected at the dock on the islands. No boat operator — private or group — can include this in their rate because it is a government conservation tax paid directly to park rangers. Budget for it separately. For 10 people, that is $60 on top of the charter price.

Rosario Islands Boat Tour Prices: Private vs. Shared in 2026

The pricing structure for the Rosario Islands often surprises first-time visitors. A private charter is not priced per person — it is priced by vessel. You pay $680 for the entire boat, and everyone you bring (up to 10 passengers) rides at no additional cost beyond the park entry fee.

The math clarifies quickly. At 10 guests, $680 / 10 = $68 per person — which lands in the same price range as a mid-tier shared ferry, with the entire boat to yourselves. The private charter breaks even at roughly 10 guests compared to a mid-range shared tour. With 8 guests it is $85 per person. With 6 guests, $113 per person — still cheaper per person than most resort packages that include lunch.

The hidden cost comparison matters here too. Shared ferries typically charge $35–60 per person for the boat only. Food, drinks, snorkel gear rental, and the park entry fee are all extra. By the time a couple spends $35 each on the ferry, $15 each on snorkel rentals, $6 each in park fees, and buys two drinks on the beach, the per-person spend is $90–100 without a meal. The private charter at $68 per person in a group of 10 already includes captain, fuel, and snorkel equipment — only the park fee and food remain.

For a full breakdown of how private vs. group boat pricing works in Cartagena, see the full private vs. group comparison for the Rosario Islands.

The 5 Best Spots in the Rosario Islands

The archipelago is large enough that no single-day trip covers everything. Here is an honest breakdown of each major destination — what it offers, who it suits, and what to expect.

Isla Grande: Coral Reefs, Mangroves & the Best Snorkeling

Isla Grande is the largest island in the archipelago and the best all-around destination for snorkeling. The reef along the island’s northwestern face runs in shallow water — between 1 and 4 meters depth in most sections — making it accessible for swimmers of all levels without scuba equipment. Brain corals, sea fans, and schools of parrotfish are common at any time of year. On the island’s eastern side, a narrow mangrove channel navigable by kayak or small tender gives a completely different environment: quiet, wildlife-rich, with herons and occasional river turtles visible from the water. Groups that want the widest variety in a single island stop almost always choose Isla Grande. For the best reef spots and snorkel conditions by month, see our guide to snorkeling in Cartagena around the Rosario Islands.

Cholón: Floating Beach Club & Party Boats

Cholón is a protected natural bay on the southeastern side of Isla Grande where dozens of private boats anchor side by side on calm days, creating an ad hoc floating beach club scene unique to the Caribbean. Beach club vendors operate directly from the water — paddling coolers of mojitos and cold beers between boats. Music plays from neighboring vessels. The vibe is festive but relaxed; it is not a public beach, it is a bay full of private boats enjoying the same anchorage. For groups who want a social atmosphere without giving up their private space, Cholón delivers exactly that. A private charter lets you anchor when you want and leave when you want — the shared ferry typically limits time here to 90 minutes.

Playa Blanca: Classic Caribbean White-Sand Beach

Playa Blanca is the most photographed beach in the Rosario Islands and probably the most recognizable image associated with Cartagena tourism: a long stretch of white sand, palm trees leaning over turquoise water, and local vendors grilling fresh lobster on the beach. The lobster is genuinely good and inexpensive by Caribbean standards — expect to pay $12–15 USD per full lobster, grilled to order. The beach gets crowded on weekends when the shared ferry and tour boats arrive simultaneously; private charters that arrive early (before 10am) get the beach largely to themselves. For a deeper look at the Playa Blanca experience and what to combine it with, see the Barú Island and Playa Blanca boat tour guide.

Natural Aquarium (Acuario Natural): Starfish & Shallow Reef

The Natural Aquarium is a shallow protected lagoon near Isla del Tesoro where the water rarely exceeds 1–2 meters in depth and visibility is exceptional year-round. Giant starfish — some measuring 30–40 centimeters across — rest on the sandy bottom and are visible without even putting your face in the water. Rays, juvenile reef fish, and occasional nurse sharks (harmless) are common sightings. The site is the most family-friendly stop in the entire archipelago: non-swimmers can stand in the water and observe everything without effort. Private charter groups typically spend 30–45 minutes here as a mid-day stop between Cholón and Playa Blanca.

Playa del Arenal: Hidden Beach for Quiet Groups

Playa del Arenal is a small, less-visited beach on the northern side of the archipelago that almost never appears on shared tour itineraries. The water is slightly deeper and calmer than Playa Blanca, the sand is equally white, and on most days the beach is shared with at most two or three other boats. Groups that want the Rosario Islands experience without the Playa Blanca crowds — honeymooners, small families, groups that want to anchor and read — find Playa del Arenal to be one of the genuinely quiet spots left in the area. Ask your captain specifically about Arenal when booking; it is the kind of insider stop that does not show up in brochures.

How to Get to the Rosario Islands from Cartagena

There are three practical ways to reach the Rosario Islands from Cartagena, and the differences in experience are significant.

Option 1: Public ferry from Muelle de los Pegasos — approximately $35 per person round-trip. The public ferry carries 80–120 passengers and takes 90 minutes each way. It departs once in the morning (usually around 8:00am) and returns in the mid-afternoon (around 4:00pm), leaving no flexibility on either end. The dock at Muelle de los Pegasos is also the busiest tourist pier in Cartagena — expect queues, hawkers, and a chaotic boarding process that can add 45–90 minutes to your morning before you even leave the dock.

Option 2: Group tour from an agency — $50–80 per person, including the ferry boat and a guide. These tours put 40–60 people on a larger vessel with a fixed three-stop itinerary. Some include lunch and snorkel equipment. The advantage over the public ferry is slightly more organization and a local guide; the disadvantage is the same fixed schedule and crowded boat.

Option 3: Private boat charter with Nauty 360 — $680 for the full vessel, up to 10 passengers, captain and fuel included. Private boats depart from Club Náutico Cartagena or private docks in Bocagrande — avoiding the Muelle de los Pegasos queues entirely. Travel time is 45–60 minutes each way at cruising speed in a speedboat, versus 90 minutes on the public ferry. The entire day is yours: which islands you visit, in what order, how long you stay at each, and when you return. For groups traveling in Spanish, the same service is available through alquiler de yate en Cartagena with full Spanish-language support.

One practical detail that matters: private charter boats depart from Club Náutico or Bocagrande docks, which are in the hotel zone and easier to reach from most accommodations than the old port at Muelle de los Pegasos. For groups staying in Bocagrande, Castillogrande, or Getsemaní, the private departure point is often a 5–10 minute taxi ride versus 20–30 minutes to the public pier.

What to Expect on a Full Day Private Charter

A typical full-day private charter to the Rosario Islands follows a loose itinerary that the captain adjusts based on sea conditions, group preferences, and time. Here is what a well-planned day looks like:

• 7:30am — Departure from Club Náutico Cartagena or private docks. Early departure is the single best thing you can do to improve the day: calmer seas, better snorkel visibility, and arriving at every spot before the ferry crowds.
• 8:30–9:00am — Isla Grande snorkel stop. The reef is at its clearest in the morning. Most groups spend 60–90 minutes here snorkeling the reef and exploring the mangrove edge.
• 10:00–10:30am — Cholón anchoring. The floating beach club scene typically builds through mid-morning and peaks around noon. Arriving at 10am gives you the best of the atmosphere without the full midday crowd.
• 12:30pm — Playa Blanca for lunch. Fresh lobster from vendors on the beach, or food you brought on the charter cooler. The captain typically anchors close to shore for easy beach access.
• 2:30–3:00pm — Natural Aquarium stop. Shallow-water starfish and reef fish — a good afternoon activity for non-swimmers and children.
• 4:00–4:30pm — Return to Cartagena. Back at the dock in time for dinner in the old city.

What the charter includes: licensed bilingual captain, all fuel for the day, basic snorkel equipment (mask, snorkel, fins) for all guests, and a cooler with ice on board. There is no fuel surcharge at the end of the day — the $680 rate is the all-in price for the vessel.

What to budget separately: the national park entry fee (approximately $6 per person, paid in cash at the island docks), food and beverages (you bring your own, or buy on the beach), and any additional watersports equipment not included in the basic kit. Gratuity for the captain is not included — 10–15% is standard and appreciated on a full-day charter. For a complete breakdown of what Cartagena charters include across different vessel types, see the full pricing breakdown for boat rentals in Cartagena.

One insider detail worth knowing: sea conditions in the Rosario Islands channel are almost always calmer in the morning than the afternoon. Caribbean trade winds typically build through the day, and by 2–3pm the return crossing can be noticeably choppier than the outbound trip. Captains who know this route build the itinerary to be at open-water crossings in the morning and sheltered bays in the afternoon — it is worth confirming this logic with your captain when discussing the day plan.

How to Book a Private Boat to the Rosario Islands

Booking a private charter to the Rosario Islands takes less than 10 minutes if you have a date and group size ready. Here is the process with Nauty 360:

1. Send your date and group size via WhatsApp. The team at Nauty 360 responds within 2 hours during business hours and confirms availability for your date. Most dates are available with 24–48 hours’ notice outside of high season; during December, January, and Semana Santa, booking 2–4 weeks ahead is recommended.
2. Confirm your itinerary preferences. Let the team know which islands are priorities — snorkeling at Isla Grande, the party scene at Cholón, beach time at Playa Blanca, the Natural Aquarium, or a combination. The captain will build the day around your group’s interests and the day’s sea conditions.
3. Receive the booking confirmation. You will get a WhatsApp confirmation with the departure time, departure dock location, captain contact, and what to bring. No prepayment or credit card is required to hold the date with most Nauty 360 bookings — confirm at the time of booking.
4. Show up with your group. Bring sunscreen (reef-safe formulations are required in the national park — no oxybenzone), cash for the park entry fee ($6 per person) and beach vendors, and any food and drinks you want on board. The charter cooler with ice is waiting.

The Nauty 360 team is reachable in English and Spanish. Response times are fastest via WhatsApp; email inquiries to help@nauty360.com are also answered within 24 hours. For groups traveling from the hotel zone or Bocagrande, the captain can coordinate a pickup point closest to your accommodation. See the full Cartagena charter page for additional vessel options and seasonal availability notes.