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Is there always seaweed in Mexico?

In Mexico, sargassum seaweed season is generally between May and October each year. If you travel to the Caribbean coast of Mexico outside of that time period you can generally avoid large mats of seaweed on the beaches. Cancun to Tulum seaweed map in March 2022.



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If you want to avoid the seaweed and still enjoy sea and sand, then don't worry. Thanks to their location, the islands of Holbox, Isla Mujeres and Cozumel all have west-facing beaches that are either relatively or completely sargassum-free.

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The beaches in Playa del Carmen experience a seasonal seaweed influx that can change throughout the year. While efforts are being made to address the situation, visitors should know that the seaweed may impact their beach experience.

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Overview on Sargassum in Riviera Maya, Cancun, and Tulum Historically, the seaweed typically starts at the beginning of spring due to a rise in sea temperature, which accelerates the reproduction of the seaweed. As the days get warmer, the presence of sargassum is expected to increase.

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Seaweed season is generally between May and October. Based on the large size of the sargassum mat currently in the Atlantic, experts forecast that Tulum could have a major seaweed problem in 2023, depending on ocean and wind currents.

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Escape the 'blobs:' These beaches in Cancun have little to no seaweed
  • Isla Contoy. “Spanning just five miles long, the island's pristine white sand, untouched by sargassum, stands as its undeniable centerpiece, drawing visitors in with its sheer beauty. ...
  • Playa Tortugas. ...
  • Isla Mujeres Playa Centro. ...
  • Isla Mujeres - Punta Sur.


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Sargassum season in the Mexican Caribbean typically runs from May through October, with July and August generally being the worst months for its arrival.

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Avoid the sargassum on Yucatan's islands Due to the currents, sargassum usually only affect the east coasts. In the Riviera Maya, most of the beaches are east-facing coast. As the islands of Yucatan have beaches in all four directions, there you might almost always find beaches free of brown algae.

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Since 2011, 2023 still ranks in the top half of the worst sargassum seaweed seasons. With the latest data, USF researchers say in June, sargassum will likely decrease in the Gulf of Mexico, meaning beachgoers may not have such a smelly experience. The USF lab forecasts the decrease to continue through August.

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While much depends on wind and ocean currents, the forecast is that Sargassum seaweed will be minimal on Mexico's Caribbean Coast in summer 2023. However it's still wise to keep a watch on seaweed conditions as landings of sargassum can still occur.

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If you're considering a vacation in Tulum and you're wondering about the Tulum seaweed problem, let me reassure you that it isn't a guaranteed problem; the seaweed doesn't cover every single beach all the time and even when the beaches are seaweed-y, there are plenty of great options for activities in Tulum.

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Sargassum seaweed is a type of macroalgae that forms over the Atlantic Ocean each year in large quantities. The foul-smelling but harmless seaweed is a perennial issue for Caribbean destinations like Cancun, which see huge quantities of the macroalgae wash up on their shores yearly.

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Due to distance, speed of travel and currents, Cancun and Playa del Carmen beaches are expected to remain relatively free of the seaweed. The upcoming 2023 summer vacation holiday season for Cancun and Riviera Maya are forecast to be sargassum-free according to Esteban Jesús Amaro Mauricio.

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Los Cabos Is The Quintessential Mexico Combo Los Cabos has some of the cleanest beaches in all of Mexico. As it is not located in the ever-warmer Caribbean, its coastline is not usually blanketed by dreaded sargassum seaweed.

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Good news if you're visiting the most beautiful island of the Mexican Caribbean. The west side of Cozumel is free of algae. The east side of Cozumel works as a natural barrier for the rest of the island and it is getting hit by the seaweed arrivals.

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While exposed eastern shores are most likely to get hit by surges of sargassum, some beaches in Mexico have no sargassum. This includes Playa Norte on Isla Mujeres, Quintana Roo and Cozumel's western shore. They're generally seaweed-free. However, much depends on winds and ocean currents.

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From October to May to avoid seaweed If you want to dip into sargassum-free beaches, the best season is from October to May. Fun Fact: Some resorts like Seadust Cancun have made efforts to keep the seaweed from arriving at the shore by implementing a marine-life-friendly barrier.

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Thick rafts of a seaweed-like algae species known as sargassum have caused resorts to close in the Caribbean before, and now they're piling up on Mexico's Riviera Maya in foul-smelling heaps.

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From October to May to avoid seaweed If you want to dip into sargassum-free beaches, the best season is from October to May.

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Tulum is known as a beach vacation destination, with stunning white sand beaches and warm, clear Caribbean waters. There are miles of beaches to enjoy when sargassum is not present, which is typically between October through early spring.

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In Cancun, by far the most sought-after beach destination this summer, travelers can expect to encounter sargassum across beaches in the hotel zone, as well as in Costa Mujeres.

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