Cartagena Islands: 8 Things Worth Doing

Cartagena runs on Colombian pesos and Caribbean heat, not the spring-like climate Medellin gets from its mountain altitude. Expect 30 to 32C most days, humidity that makes the walled city feel hotter than the thermometer says, and a rate that trades around 3,236 to 3,263 COP to the dollar, close enough that you should check it again before you fly. The Old City earns one day. The water around it earns the rest of the trip: the Rosario Islands and Playa Blanca if you book ahead of a dock tout, Volcan del Totumo as a novelty rather than a headline, and Bocagrande’s own beach skipped in favor of almost anywhere offshore. Here is what is actually worth doing once you leave the walls.

Cartagena islands trip essentials

Days needed Best months Daily budget (COP) One thing to know
2 for a rushed walls-plus-islands hit, 5 to 7 for islands, Totumo and Palenque December to April (dry season, least rain) 150,000 to 300,000 per person, mid-range Small boats to the islands carry an official rough-seas warning for December and January

If you want a plan built around this, start with a Cartagena 3 day itinerary or stretch it into the full Cartagena 7 day itinerary . For the walled-city version of this trip, the Cartagena, Colombia guide covers the Old Town in depth; this one covers what is past it.

8 things worth doing around Cartagena’s islands and coast

  1. The Rosario Islands or Playa Blanca, booked ahead. A standard day trip runs about 159,000 COP for an adult and 139,000 COP for a child (2026 pricing), boat, lunch and standard dock fees included, but a separate national park and dock tax of roughly 25,000 to 29,000 COP is charged in cash at the pier and is not always folded into the advertised price. The overselling reputation here is real and well documented; book a Rosario Islands tour through an operator with visible reviews rather than a walk-up tout at Muelle de la Bodeguita.
  2. Volcan del Totumo, expectations managed. Entry runs about 20,000 to 25,000 COP at the site, with organized round-trip tours from Cartagena in the 35 to 65 USD range. It is a mud float and a lagoon rinse, not a scenic volcano, and the massage and rinse-assistance tips (5,000 to 15,000 COP) add up fast. Book a Totumo tour if the novelty appeals; skip it without guilt if your days are limited.
  3. La Boquilla, over a second Bocagrande afternoon. This fishing village turned beach club and kitesurf spot sits about 20 minutes north of the center, with mangrove canoe tours and a fraction of the Rosario Islands crowd.
  4. Sunset on the walls, on arrival day only. The Old City is not this trip’s focus, but walking the ramparts near Baluarte Santo Domingo at sunset, Cafe del Mar if you want a table, a cold beer on the wall if you do not, is worth the one evening before the islands take over the itinerary.
  5. A palenquera photo, paid for properly. The fruit sellers in traditional dress descend from San Basilio de Palenque and now earn more from posed photos than produce. Agree on roughly 8,000 COP before the camera comes out; an uninvited candid shot draws real, justified pushback.
  6. San Basilio de Palenque, as the deeper day trip. About 90 minutes each way, this is the only surviving palenque (maroon settlement) in Colombia and carries its own UNESCO Intangible Cultural Heritage recognition . A guided day trip runs roughly 230,000 to 300,000 COP depending on group size, a stronger pick for a second visit than another beach day.
  7. Bocagrande, if you need a base with pharmacies and a boardwalk. The beach itself is mediocre next to the islands, but the peninsula’s international hotel brands and walkable strip make it a reasonable base for travelers prioritizing convenience over Old City character.
  8. A chiva party bus, for one lighthearted night. The open-sided party bus runs about 50,000 COP a seat for a shared 2 to 3 hour tour with live music and drinks included, ending at a club. Not a serious sightseeing pick, just a fun one.

What to skip

Skip the walk-up boat tout at the dock offering a same-day discount; the Rosario Islands and Playa Blanca overselling problem is concentrated exactly there. Skip a candid palenquera photo without paying first. Skip planning a full day around Bocagrande’s own sand when the actual draw is offshore. And skip treating Volcan del Totumo as equivalent in importance to a full islands day. It is not.

Is the Rosario Islands boat trip worth the scam risk?

Yes, booked through a reviewed operator rather than a dock tout. The overselling pattern, inflated concession pricing on the islands, a dock tax that is not always disclosed upfront, is well documented enough to plan around rather than avoid entirely. Confirm before booking whether the roughly 25,000 to 29,000 COP tax is included, bring the cash anyway, and treat December and January’s rough-seas advisory as a real scheduling constraint for small boats.

Can you drink the tap water in Cartagena?

Do not assume yes the way you might in Medellin. Cartagena’s coastal distribution infrastructure is older and less consistent, and water quality by the time it reaches a tap in Getsemani or Bocagrande is genuinely more variable than what leaves the treatment plant. Bottled or filtered water is the practical default here, a real city-specific difference within the same country.

Where to stay

Getsemani or the Walled City put you closest to the boat docks for an early island departure; Bocagrande trades that walking distance for a beachfront strip and bigger hotel brands. Check rates on Booking.com for Getsemani before booking the pricier Walled City rooms by default.

When to go

December through April is the dry season and the best-weather window, also the most expensive. The wetter stretch runs May through November, with September through November the rainiest. Whatever the month, the boat-safety advisory is specific: small tourist boats on the Cartagena-to-islands route carry an official rough-seas warning for December and January, worth checking against your dates before you book a boat day, not after.

For the official numbers on the walls and forts, the UNESCO listing and Colombia’s national tourism site are better sources than a tour operator’s pitch, and the current US State Department advisory is worth a read before you fly regardless of how safe Cartagena’s own reputation runs. Book the islands trip before anything else on this list; everything else in Cartagena is easy to arrange on the ground.