Sargassum at Shell Beach (Grand Galet): today's status
Clear
All clear
Shell Beach, also known as Grand Galet, curves along the southern edge of Gustavia, a ten minute walk from the harbour of St Barthelemy. The name comes from the layer of shells and coral fragments that replaces fine sand across much of the shoreline.
Here you get the day's 0 to 5 rating for sargassum at Shell Beach, a map showing the cove and how it opens to the sea, and an update every morning. The figure describes today only, because a beach can look different from one morning to the next.
Shell Beach (Grand Galet) on the sargassum map
What to know about this beach
Facing south-west, the beach sits on the island's leeward side, shielded from the easterly trade winds that carry sargassum across from the Atlantic. Heavy landings show up first along the eastern and north-eastern shores; here they arrive indirectly, when a wide episode works around St Barth or a coastal current pushes clumps towards Gustavia.
Two local details still matter. The cove is short and closed off by rocky points at either end, so anything that drifts in can sit there instead of washing back out. And the steep bank of pebbles and shells gathers stranded weed into a narrow line at the top of the beach, easy to spot even in small amounts. The daily rating is what separates a thin fringe from a landing that actually spoils a swim.
Frequently asked questions
Why does Shell Beach see less sargassum than the east coast?
It opens to the south-west, on the leeward side, while sargassum travels in on the easterly trades. Mats reach the windward shores first and only turn up here after working their way around the island.
How do I check Shell Beach before walking down from Gustavia?
The 0 to 5 rating and the map on this page are refreshed each morning. A quick look before you leave the harbour is enough, since the beach is only a short walk from the centre.
Do the shells make the seaweed more noticeable?
Yes. Against that pale bed of pebbles and broken shell, a thin brown line stands out from a distance, so the visual impression can overstate how much weed has actually come ashore.
Where else can I swim nearby if the beach is loaded?
The western shore beaches, Flamands and Colombier, are the nearest reference points. Check their ratings before driving over, because conditions can differ from one cove to the next on the same day.