Sargassum at Grande Anse (Trois-Rivières): today's conditions
Light
A few patches
Grande Anse spreads below the hills of Trois-Rivières, at the southern tip of Basse-Terre, where the Atlantic coast starts bending west toward the Canal des Saintes. Dark sand, a cultivated valley behind it, and the village jetty for Terre-de-Haut only minutes away.
This page gathers what matters before you walk down: today's sargassum rating for Grande Anse on a 0 to 5 scale, a plain reading of what has been observed, and a map showing whether the rest of southern Basse-Terre is in the same shape. It is refreshed every morning.
Grande Anse on the sargassum map
What to know about this beach
Grande Anse faces east, into the trade winds and the sargassum mats that ride up the Antilles arc. At this latitude, though, the beach sits on a corner of the island: the coast swings west just beyond it, toward the Canal des Saintes.
That corner position has practical consequences. Some rafts tracking down the east coast slide past the point and never touch land here; others get pushed into the bay when the wind veers southeast. A day's outcome can hinge on very little, and two beaches a few kilometres apart may end up in visibly different states. The Canal des Saintes, where currents run strongly, adds another layer of variability. Reading the coast as a block rarely works this far south, which is why each beach is rated on its own.
Frequently asked questions
How exposed is Grande Anse to sargassum?
It faces east, directly into the trade winds, which puts it on the path of incoming rafts. Sitting on Basse-Terre's southern corner softens that: depending on wind direction, mats round the point instead of landing.
How do I check Grande Anse before going down?
The FanGass map gives Grande Anse a 0 to 5 rating each morning along with the observed state. Checking it from Trois-Rivières village takes seconds before you drive down to the sand.
Can I combine the beach with a trip to Les Saintes?
The Trois-Rivières jetty serves Terre-de-Haut and sits minutes from the beach. Reading the day's rating first helps decide whether the morning is better spent on the sand or on the boat.
Do neighbouring beaches behave the same way?
Not reliably. On this southern point, orientation changes quickly from one cove to the next and ratings often differ between beaches that are close together. The map lines them up for comparison.