Sargassum at Frenchman's Cove (Port Antonio): today's conditions
First bulletin for this beach lands with tomorrow morning’s update.
Frenchman's Cove sits just east of Port Antonio, in Jamaica's Portland parish, where a small river runs across the sand and into the sea. Two wooded points close the cove in, which makes it a very different shape of beach from the open bays further along the coast.
This page tracks sargassum at Frenchman's Cove day by day. You get the current state of this beach on its own, a 0 to 5 rating that sums it up at a glance, and a map of the surrounding north-east coast. Everything is refreshed each morning, before you plan where to swim.
Frenchman's Cove on the sargassum map
What to know about this beach
This stretch is filed as Caribbean coast, but Jamaica's north-east shoulder still catches what the easterly trade winds carry. Orientation is what separates one beach from the next here. Frenchman's Cove faces north, so drifting mats reach it at an angle rather than head on, unlike the east-facing beaches a short drive down the same road.
The shape of the cove then takes over. It is narrow and held between two headlands, so anything that does come in tends to sit there, where a long open beach would let the alongshore current carry part of it away. The river adds a moving variable: its outflow keeps a channel open across the sand, and depending on how strong it runs, weed gets pushed offshore or pinned against one side of the cove.
Frequently asked questions
Is Frenchman's Cove badly affected by sargassum?
It faces north, so it sits off the direct line of the easterly trades that push the mats towards Jamaica. The trade-off is the narrow cove: whatever does arrive lingers longer than on open sand.
How do I check the beach before heading out?
Open the FanGass map the same morning. It gives Frenchman's Cove its own 0 to 5 rating alongside the other Port Antonio beaches, and the reading is rebuilt daily before the day starts.
When is sargassum most likely on this coast?
Arrivals cluster from spring through late summer, when the drifting rafts track closest to the Greater Antilles. Winter months are usually quieter on the Portland shore, though a quiet season is never a promise.
Does the river make a difference to the seaweed?
Indirectly, yes. The freshwater outflow keeps a shifting channel across the sand, so deposits move from one side of the cove to the other rather than settling in a fixed spot.