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 runs a fixed 9:00am to 5:00pm schedule, which in practice means arriving at the snorkel spots well before the group ferries that depart later in the morning, and staying as long as you want at each stop within the charter day.

See current Rosario Islands charter pricing for the full breakdown by vessel.

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.

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, and snorkel gear rental are all extra. By the time a couple spends $35 each on the ferry, $15 each on snorkel rentals, and buys two drinks on the beach, the per-person spend is well above the ferry price without a meal. The private charter at $68 per person in a group of 10 already includes captain, fuel and ice; snorkel gear can be rented separately and food is extra.

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 many 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, 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 charters often include it as a 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 — including the ferry boat and a guide. These tours put many 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, fuel and ice included. Depending on the boat, departures are from different marinas in Cartagena. We confirm your exact meeting point on WhatsApp. With a dedicated captain waiting for your group, there is no queue to board. Travel time is about 1 hour 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: since the exact departure point depends on the vessel assigned to your booking, confirm it with the Nauty 360 team when you reserve — they will also help coordinate the best pickup route from your accommodation in Bocagrande, Castillogrande, Getsemaná, or elsewhere in Cartagena. Hotel pickup is available at an extra cost.

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. For the operational details straight from Nauty 360’s own captains, see our Rosario Islands captain’s guide. Here is what a well-planned day looks like:

• 9:00am — Departure from your marina in Cartagena (confirmed on WhatsApp). Every private charter runs the same fixed 9:00am to 5:00pm schedule, ahead of the group ferries that depart later in the morning.
• Isla Grande snorkel stop. The reef is at its clearest in the morning. Groups snorkel the reef and explore the mangrove edge.
• Cholón anchoring. Floating bars with music and drinks, and you can get in the water. There are many people and many boats; it is calmer on weekdays.
• Playa Blanca for lunch. The usual Full Day order is Rosario, Cholón, then Playa Blanca, and it can be changed if you ask. 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.
• Natural Aquarium stop. Shallow-water starfish and reef fish — a good afternoon activity for non-swimmers and children.
• Return to Cartagena. Back at the dock around 5:00pm, in time for dinner in the old city.

What the charter includes: licensed bilingual captain, all fuel for the day, and a cooler with ice on board. Snorkel gear is not included; it can be rented separately — ask us on WhatsApp. 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: food and beverages (you bring your own, or buy on the beach), snorkel gear and any other watersports equipment. The captain's tip is optional. For a complete breakdown of what Cartagena charters include across different vessel types, see the Cartagena boat rental page or the full pricing breakdown.

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 about 3 minutes online if you have a date and group size ready. Here is the process with Nauty 360:

1. Check live availability on the reservations page. Pick your boat and date and see instantly what is free, including same-day. Questions? WhatsApp us and we reply within 2 hours. 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. Pay the deposit and your booking is confirmed on the spot. Pay 50% (100% if departure is 3 days away or less); the balance is due 2 to 3 days before. We then send you the departure time, meeting point, and what to bring on WhatsApp.
4. Show up with your group. Bring sunscreen (reef-safe formulations are required in the national park — no oxybenzone), cash for 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, we can coordinate a pickup point closest to your accommodation. Hotel pickup is available at an extra cost. See the full Cartagena charter page for additional vessel options and seasonal availability notes.

Best Time to Visit the Rosario Islands

The Rosario Islands are a year-round destination, but the experience varies significantly by season. Here’s what to expect each month so you can plan the trip that matches your priorities.

Dry Season (December–April) — Best Overall

This is peak season for a reason: clear skies and the best underwater visibility of the year (up to 20 meters in January–February). The water temperature stays between 27–29°C. December and January bring a fresh Caribbean breeze that keeps temperatures comfortable even at midday. This is the ideal window for US and European visitors — Colombian school vacations haven’t started yet in January, so the islands are busy but manageable.

Watch out for: Semana Santa (Easter week, March–April) and the Colombian school break (December 15 – January 15) — both periods see heavy domestic tourism with heavy boat traffic at Cholón. Book your private charter 3–4 weeks in advance during these dates.

Rainy Season (May–November) — Best Value

Rain in Cartagena is mostly afternoon showers that last 30–60 minutes — morning departures (before 9am) typically avoid them entirely. The sea is calmer for the Rosario Islands from March to November, and most days are perfectly navigable. The big advantage: the islands are less crowded, and Cholón feels noticeably more intimate. September and October are the windiest months — the captain will advise if conditions warrant adjusting the route.

Month-by-Month Summary

How to Get to the Rosario Islands: All Your Options Compared

There are three ways to reach the Rosario Islands from Cartagena, and the price difference between them is smaller than most people expect — especially once you factor in the experience gap.

Lancha Colectiva (Shared Water Taxi)

The cheapest option at $15–20 per person round-trip, departing from Muelle de los Pegasos or the Bazurto waterfront. The lanchas carry 30–50 passengers and run on a roughly fixed schedule (departures around 8am, 9am, and 10am; returns around 3pm and 4pm). You’ll stop at whatever islands are on the driver’s route that day — usually Playa Blanca and one stop in the Rosario Islands. Good option for solo travelers or pairs on a tight budget who don’t mind sharing space.

Group Tour (Catamaran)

Tour operators in Cartagena’s walled city offer full-day catamaran tours, typically covering Cholón, the Natural Aquarium, and a beach stop. The catamarans carry many passengers. You get lunch included and usually an open bar — but you also get limited time at each stop, a megaphone announcement every time it’s time to move, and very little space to yourself. Adequate for solo travelers who want a social atmosphere.

Private Boat Charter — The Better Math

A private charter with Nauty 360 starts at $680 for the entire vessel — up to 10 passengers, captain, fuel and ice always included. Divide that across a group of 10 and you’re paying $68 per person: barely more than a group tour, but with a completely private boat, a bilingual captain, and zero strangers. You set the itinerary, the pace, and the music. The captain can take you to Cholón, Isla Grande, the Natural Aquarium, and Playa Blanca in a single 8-hour day if that’s what you want — or spend 4 hours at one spot if that’s your preference.

How Much Does It Cost to Visit the Rosario Islands by Private Boat?

Here’s the full cost breakdown so you know exactly what to budget for a private day trip to the Rosario Islands from Cartagena.

Charter Price by Group Size

What’s Always Included

• DIMAR-certified bilingual captain
• All fuel for the agreed route (including the ride of about 1 hour to the islands)
• Snorkel equipment (masks, fins, life vests)
• Cooler with ice
• Instant booking confirmation

What’s Not Included

• Food and drinks (BYOB — bring your own or buy from beach vendors)
• Captain’s tip (optional)
• Optional add-ons: paddleboards, kayaks, catering arrangements

Beach vendors at Cholón sell ceviche, coconut water, and beer from boats. Playa Blanca has beachside restaurants with fresh lobster. Bringing your own drinks from Cartagena saves money and gives you more choice. Ready to book? Start on Nauty 360's Rosario Islands boat page, with rates from $680 per charter.

What we see on every trip

• The sea is calmer for the Rosario Islands from March to November.
• Playa Blanca is less crowded before 10 AM; if you want it early, ask us to change the order.
• By lancha, the Rosario Islands are about 1 hour from Cartagena.
• Cholón is not the best stop for families with children because there are lots of people and lots of boats. For families, we recommend a beach club on the Rosario Islands.
• The question we hear most before booking: how many people fit on the boat? It depends on the boat. Tell us your group size on WhatsApp and we will recommend the right one.

When a Private Boat to the Rosario Islands Is the Wrong Choice

A private boat is not right for everyone. Be honest with yourself before booking:

• You are a solo traveler looking to meet people: shared tours put you on a boat with other travelers, while a private boat is just your group and the crew.
• You want certified SCUBA diving with an instructor: private speedboats are not set up for dive instruction, and snorkel gear is not included. Book a specialized dive operator.