Where and When to See Whales and Dolphins in Guadeloupe by Catamaran?

In Guadeloupe, humpback whales frequent the leeward coast of Basse-Terre, the Saintes channel and the waters off Marie-Galante between January and April, with a peak in February and March. Dolphins, on the other hand, are present year-round. These are the same waters, and largely the same months, where Sailoé catamarans cruise the Caribbean from December to April: no need to book an excursion, just be at sea at the right time.

When to See Whales and Dolphins in Guadeloupe? The Month-by-Month Calendar

The humpback whale breeding season in the French Antilles runs from December to April, according to the Martinique Marine Nature Park (Parc naturel marin de Martinique). In Guadeloupe specifically, whales are most present between January and April, with a peak in February and March, according to the Guadeloupe Islands tourist board. Dolphins, meanwhile, can be seen year-round, with the best viewing conditions between December and May.

Month	Humpback whales	Dolphins
December	Start of season in the French Antilles	Present, good viewing conditions
January	Growing presence in Guadeloupe	Present, good viewing conditions
February	Peak season	Present, good viewing conditions
March	Peak season	Present, good viewing conditions
April	End of season	Present, good viewing conditions
May	Out of season	Present, last month of best conditions
June to November	Out of season	Present year-round, more variable conditions

Interest in spotting whales follows a similar curve: it rises sharply between December and April, peaking in March, exactly the period when Sailoé catamarans cruise the Caribbean.

Where to See Whales and Dolphins in Guadeloupe? The Leeward Coast, the Saintes Channel and Marie-Galante

Encounters with whales and dolphins are concentrated in three areas of Guadeloupe: the leeward coast of Basse-Terre between Bouillante and Deshaies, the Saintes channel, and the waters off Marie-Galante. These are exactly the legs that Sailoé clients sail on a cruise through the archipelago.

The leeward coast of Basse-Terre, between Bouillante and Deshaies, is the area most frequented by cetaceans in season. These are also the waters of the Cousteau Reserve and the Pigeon Islets, already covered in our articles on snorkelling there.

The Saintes channel, between Basse-Terre and the Saintes archipelago, is a second area that is regularly frequented. It’s a leg found in our Caribbean cruise itineraries.

Further out, the waters off Marie-Galante complete these three areas. None of them guarantees a sighting: they are simply places where encounters are statistically more frequent, not scheduled meeting points.

For a cruising catamaran, these three areas aren’t sailed the same way. The leeward coast is followed along the route, which leaves time to spot a blow without diverting the boat: it’s a passing approach, not really a stop in itself. The Saintes channel is a required passage between Basse-Terre and the Saintes archipelago: cetaceans are crossed there in the course of the crossing itself, not at the end of a search, which makes it more of a waypoint than a destination in its own right. Off Marie-Galante, the sea is rougher and the horizon more open, conditions suited to a multi-day route rather than a quick there-and-back from the coast, which is why this area remains less frequented than the other two.

Which Whale and Dolphin Species Can You See in Guadeloupe?

The humpback whale is the star species of the season, alongside three dolphin species present year-round: the common bottlenose dolphin, the pantropical spotted dolphin and Fraser’s dolphin. In total, 26 cetacean species have been recorded in the Agoa sanctuary, according to the Office français de la biodiversité, France’s national biodiversity agency.

The humpback whale is easy to recognise once it’s active at the surface: breaches, pectoral fin slaps, and a clearly visible blow with every breath. This behaviour is what makes it spottable from a distance from the deck of a catamaran, without any need to approach.

The three dolphin species mentioned above can be seen year-round in Guadeloupe’s waters, with the best viewing conditions between December and May, according to the Guadeloupe Islands tourist board.

The sperm whale, a resident of waters further south, is covered in detail in our article on Dominica by catamaran.

Beyond cetaceans, Guadeloupe’s waters are home to rich marine life, covered in our article on snorkelling in Guadeloupe.

What Are the Approach Rules for Whales and Dolphins in the Agoa Sanctuary?

In the Agoa sanctuary, deliberately approaching a marine mammal within 300 metres is prohibited for recreational boaters, a distance that’s easy to respect while cruising since it simply means not approaching on purpose.

The Agoa sanctuary was created in 2010 and recognised as a specially protected marine area under the SPAW protocol of the Cartagena Convention in 2012. It covers 143,256 km² of waters spanning Martinique, Guadeloupe, Saint-Barthélemy and Saint-Martin, and is managed by the Office français de la biodiversité, France’s biodiversity agency. Twenty-six cetacean species have been recorded there.

The current rules, set by prefectoral order no. R02-2024-07-12-00001 of 12 July 2024 (a French administrative regulation), prohibit deliberately approaching a marine mammal within 300 metres, on the water, under the water and above the water. Only authorised professionals holding a specific exemption may approach as close as 100 metres. Entering the water and swimming with cetaceans is prohibited, regardless of the observer’s status.

For a boater on a cruise, these rules are nothing restrictive on a day-to-day basis: they simply mean not diverting your course to approach an animal, and letting the distance happen naturally.

How Should You Behave on a Catamaran When You Encounter Whales or Dolphins?

In the event of a chance encounter with whales or dolphins, the rule set by the Agoa sanctuary is to reduce speed to 5 knots and keep a parallel course, without crossing the animal’s path or trying to provoke any interaction.

This rule applies as soon as a cetacean is spotted near the boat’s course. It doesn’t require any particular manoeuvre: you hold your heading, ease off the throttle, and let the animal decide how much distance it keeps.

There’s a clear difference between crossing paths with a group of whales or dolphins along your route, which happens regularly while cruising in season, and setting out specifically to look for them, which is what organised excursions from shore do. A cruising catamaran isn’t meant to actively search for cetaceans: when an encounter happens, it comes about along the way rather than being planned.

In practice, it’s usually the lookout who spots the blow or the animal’s back before the rest of the crew sees it: the reflex is to alert the helm without raising your voice, so as not to stir up excitement on board. Before changing anything about the course, watch the direction the group is moving and its apparent speed, to make sure the catamaran’s route won’t cross its own. If the two paths stay parallel, there’s nothing else to do but ease off the throttle and let the distance hold naturally. The boat resumes its normal course as soon as the animal moves off or dives for good, with no need to wait for any particular signal.

Entering the water with whales or dolphins remains prohibited under all circumstances (see the question on this below in the FAQ). Before or after an encounter at sea, anchoring remains the best way to enjoy the spot: our recommended anchorages in Guadeloupe cover the best options depending on the day’s weather.

Why Is Whale Season Also the Best Time to Sail in Guadeloupe?

The best way to encounter whales in Guadeloupe isn’t to book a three-hour excursion, it’s to be sailing during the months when they’re there, which every Sailoé client already does on a Caribbean cruise from December to April.

The humpback whale season in Guadeloupe and Sailoé’s Caribbean cruising season overlap almost exactly. A client who books a catamaran from January to April, the heart of our Caribbean season which opens as early as December, is already sailing in the waters and during the months when encounters are most frequent, with no need to add an organised excursion to the itinerary.

This doesn’t change the nature of the sighting: it remains a matter of chance while sailing, not a service booked in advance. It’s also what sets it apart from an organised excursion from shore, an encounter that comes about on its own rather than being scheduled.

To plan a Caribbean cruise during whale season, our team advises every sailor on the choice of catamaran and the most favourable dates for their schedule.

FAQ

Where and when can you see whales in Guadeloupe?

Humpback whales are mainly seen in three areas: the leeward coast of Basse-Terre between Bouillante and Deshaies, the Saintes channel, and the waters off Marie-Galante. The most favourable period runs from January to April, with a peak in February and March, according to the Guadeloupe Islands tourist board. Dolphins, meanwhile, can be seen year-round in these same waters.

What is the humpback whale season in the Antilles?

According to the Martinique Marine Nature Park, the humpback whale breeding season in the French Antilles runs from December to April. In Guadeloupe specifically, whales are most present between January and April, with a peak in February and March, according to the Guadeloupe Islands tourist board.

Can you see dolphins in Guadeloupe all year round?

Yes. Three species, the common bottlenose dolphin, the pantropical spotted dolphin and Fraser’s dolphin, are present year-round in Guadeloupe’s waters. The best viewing conditions are between December and May, according to the Guadeloupe Islands tourist board.

Can you swim with whales or dolphins in Guadeloupe?

No. Entering the water and swimming with cetaceans is prohibited in the Agoa sanctuary, regardless of who is observing. Deliberately approaching within 300 metres is also prohibited for any recreational boater.

What is the Agoa sanctuary?

The Agoa sanctuary is a protected marine area created in 2010, recognised under the SPAW protocol of the Cartagena Convention in 2012. It covers 143,256 km² of waters spanning Martinique, Guadeloupe, Saint-Barthélemy and Saint-Martin, and is managed by the Office français de la biodiversité, France’s biodiversity agency.