Sargassum Advisory

Sargassum in Cancun & the Riviera Maya — Honest Advisory & Charter Plan

Sargassum (seaweed) drifts onto the Caribbean coast unpredictably May through October. A private yacht charter sails AWAY from affected beaches to the clear leeward side of Isla Mujeres and the open Caribbean — the cleanest swim of your trip.

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Sargassum — a brown floating seaweed — can wash onto Cancun and Riviera Maya beaches between May and October, varying year to year and beach to beach. A private yacht charter is one of the only ways to guarantee clear water during a heavy sargassum week: the boat motors out to the leeward (western) side of Isla Mujeres, anchors in the protected sand-bottom channels, and you swim in completely clean water. We tell you honestly when it's arriving and where the clear water is each week.

Key facts

What you need to know

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When

Sargassum season is roughly May to October, peaking May-August. November to April is essentially sargassum-free.

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Where it hits hardest

East-facing beaches: Tulum, Akumal, Playa del Carmen, Cancun south Hotel Zone. Less affected: north Hotel Zone Cancun, Playa Mujeres, leeward side of Isla Mujeres.

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Clear water by yacht

The leeward (west) side of Isla Mujeres, El Meco reef and the protected channels off Playa Mujeres stay sargassum-free almost always. A yacht puts you there in 20-30 minutes.

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Weekly forecasts

We watch the Sargassum Monitoring Network (Red de Monitoreo) and the captain's morning report. If you ask for a sargassum check the day before, we tell you exactly what your route should be.

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Practical tips

Wear swim shoes if you walk on a beach with sargassum (occasional sea-lice and stingers underneath). Sargassum is harmless to swim through but smells when it rots on shore.

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Yellow flag, not red

Sargassum is a real thing but the Cancun area is bigger than the news clip. The yacht industry continues at full capacity all summer; we just shift routes weekly.

Recommended yachts

Best yachts for this season

Other BrandsOverhead aerial top-down view of the white Silverton Manta Ray flybridge yacht anchored in brilliant turquoise Caribbean water near Cancun with guests on bow sunpad area

40 ft Silverton Flybridge — Manta Ray

📏 40-50 ft👥 10-15 pax📍 Cancun

Silverton Flybridge yacht rental in Cancun. Known for its space and stability.

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CatamaranLagoon 421 catamaran under full blue and white striped sail cruising in turquoise Caribbean water during a VIP all-inclusive charter from Cancun to Isla Mujeres

42 ft Catamaran VIP all-inclusive with chef

📏 40-50 ft👥 10-15 pax📍 Cancun, Isla Mujeres, Playa Mujeres

VIP Lagoon catamaran with chef, lobster grill, paddleboard, fishing and an overnight option.

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SunseekerStarboard profile of 50 ft Sunseeker Sea Eagle luxury charter yacht anchored in crystal turquoise Caribbean water near Cancun

50 ft Sunseeker yacht for charter to Isla Mujeres

📏 50-60 ft👥 20-25 pax📍 Cancun, Playa Mujeres, Isla Mujeres

Deluxe Sunseeker boat for charter in Cancun. The Sunseeker Sport 50 ft is one of the most sought-after options.

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Other BrandsTop-down aerial view of 55 ft Carver Trilogy luxury yacht charter anchored in crystal-clear turquoise shallows near Isla Mujeres with jet ski alongside stern

55 ft Carver boat at Playa Mujeres — for groups

📏 50-60 ft👥 20-25 pax📍 Playa Mujeres

Rent this large and luxurious yacht Trilogy at the Playa Mujeres area.

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Catamaran42 ft Cocoon motor catamaran charter cruising turquoise Caribbean near Isla Mujeres landmark, guests lounging on wide teak deck, Cancun rental

42 ft Motor Catamaran — for party groups

📏 40-50 ft👥 15-20 pax📍 Cancun

Excellent option — a mix between a yacht and a catamaran to celebrate aboard for 16 people.

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CatamaranAerial starboard view of 45 ft Lagoon Beluga catamaran anchored in turquoise Caribbean waters off Cancun, full hull, mast and white trampoline visible, luxury charter

45 ft Catamaran Lagoon — with amenities to charter

📏 40-50 ft👥 10-15 pax📍 Cancun

Explore the Caribbean with this Luxury Lagoon Catamaran Beluga 45 ft, 15 people.

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Frequently asked

Sargassum Advisory — FAQ

Is there sargassum in Cancun right now?

It varies week to week and beach to beach. Send us your dates on WhatsApp and we share the most recent Sargassum Monitoring Network map plus the captain's morning report so you know what to expect.

Can I still snorkel during sargassum season?

Yes. A yacht charter motors out to the leeward (west) side of Isla Mujeres, El Meco reef or the channels off Playa Mujeres — those spots stay clear almost always because the current sweeps the sargassum east. The water there is crystal-clear all summer.

Is sargassum dangerous?

Swimming through floating sargassum is harmless — it's seaweed, not jellyfish. On the beach itself, sea-lice and tiny stingers sometimes live in the rotting mats, so wear swim shoes if you walk on it. The smell when it rots ashore is the main inconvenience.

When is sargassum at its worst?

May through August in heavy years. June and July are usually the peak. By October it tapers off and November-April is almost completely sargassum-free.

Will my charter be cancelled because of sargassum?

No — the charter goes ahead. The captain simply picks a route that avoids the affected beaches and anchors in clear water. We don't cancel for sargassum; we just shift the itinerary.

Where are the cleanest beaches during sargassum season?

By yacht: leeward (west) side of Isla Mujeres, the inner channel at Playa Mujeres, and the protected coves at Inah. By land: Playa Mujeres beaches (north of Cancun), the leeward side of Isla Mujeres, and parts of Holbox.

Want to plan a trip around this? Message us on WhatsApp.

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