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Sargassum at Playa Flamenco (Culebra): today's beach report

Today, September 1

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

Playa Flamenco curves along the north shore of Culebra, the small island municipality that sits east of mainland Puerto Rico. This page covers one subject: sargassum at Playa Flamenco, with the condition observed today, a rating from 0 to 5 and a map showing where the seaweed is coming ashore.

The report is rebuilt every morning, before the first boats and the first beach days, using shoreline observations and the drift of seaweed rafts offshore. It reflects today rather than a seasonal average. Landings shift with the wind, so a shore loaded on Tuesday can be clear by Thursday, which is why a check the same morning is worth the minute.

Playa Flamenco on the sargassum map

What to know about this beach

Flamenco faces due north on Culebra's Atlantic side. That matters, because sargassum rafts travel mostly from east to west on the trade winds: a north-facing shore takes the drift at an angle rather than head-on. The bay's horseshoe shape works the other way, though. Two headlands close the water in, so anything carried inside by a northerly swell circles within the cove instead of passing through.

Culebra is also among the first landfalls for material drifting in from the tropical Atlantic, reaching the archipelago before the east coast of Puerto Rico itself. When a large mat moves up the island chain, this coast tends to be involved early. Along the sand, exposure is uneven: the rocky ends of the crescent hold weed longer than the open middle, which the surf sweeps more freely.

Frequently asked questions

Is Playa Flamenco badly affected by sargassum?

Its north-facing arc sits off the direct line of the east to west drift, which helps. The closed horseshoe bay is the catch: once seaweed enters, the headlands slow it from leaving again.

How do I check Flamenco before taking the ferry over?

Open the FanGass map on the morning of your visit. It gives Playa Flamenco a rating from 0 to 5 with the landing observed, refreshed daily at dawn so the crossing is an informed one.

When is sargassum season on Culebra?

Landings cluster from spring through late summer, with May to August the most common peak. Winter months are usually quieter, though a wind shift can still bring weed ashore outside that window.

Which nearby beach can I compare it with?

Playa Zoní, on the east end of Culebra, faces northeast and meets the trade wind drift more directly. Checking both ratings the same morning usually shows which side of the island reads cleaner.

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.