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Sargassum at Balneario de Boquerón: today's beach report

Today, September 1

First bulletin for this beach lands with tomorrow morning’s update.

Balneario de Boquerón is the long public beach at the head of Boquerón Bay, in the Cabo Rojo municipality on Puerto Rico's southwest corner. Palms, municipal facilities and a wide strip of sand face due west, out toward the Mona Passage.

This page tracks sargassum at Boquerón day by day: the score of the day from 0 to 5, the live map for the island's western zone, and the local context that explains the reading. Everything is refreshed each morning, so you can decide before the drive rather than after it.

Balneario de Boquerón on the sargassum map

What to know about this beach

Western Puerto Rico stands with its back to the trade winds, and Boquerón benefits from that. Sargassum rafts travel east to west with the wind and the currents carrying them, so the first coasts they meet are Fajardo, the southeast and the south. Reaching a west facing bay means wrapping around the island's headlands, and much of the material never makes that trip.

Bay shape then takes over from exposure. The balneario lies at the back of an almost enclosed body of water: ocean swell arrives softened, but whatever drifts through the mouth of the bay flushes out slowly and can sit along the shoreline for days. Afternoon sea breezes blowing onshore tend to push anything already floating inside closer to the sand.

Frequently asked questions

Why does Boquerón usually see less sargassum than eastern Puerto Rico?

Rafts ride the easterly trades, so they hit Fajardo, Humacao and the southeast first. A west facing bay only receives what drifts around the island, which removes a large share of the incoming weed.

How do I check Boquerón before heading to the beach?

Open the FanGass map and read Boquerón's score for the day, on a 0 to 5 scale. It is recalculated every morning, and neighbouring Cabo Rojo beaches appear alongside it for comparison.

When is sargassum most likely here?

Caribbean landings cluster between spring and late summer, with peaks that shift from one year to the next. Winter episodes are less frequent, though a change in wind or current can still bring material in.

Which nearby beaches make good backups?

Playa Buyé a few kilometres north and Playa Sucia to the south, near the Los Morrillos lighthouse, sit in the same municipality but face different directions, so their daily scores often differ from this one.

Nearby beaches

All Puerto Rico beaches

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Methodology & transparency — FanGass is a free service published by the Katchak agency and created by Morgan Haillus. Every morning, each beach’s 0-to-5 score is recomputed by cross-checking official bulletins (Météo-France, NOAA, University of South Florida), satellite imagery of the offshore rafts, and on-the-ground user reports.