How long will the seaweed last in the Caribbean?

USF reports it remains difficult to predict exact timing and location for individual beaching events but substantial amounts of the seaweed are expected in May in both the Caribbean Sea and Gulf of Mexico. June is forecast to be the likely peak of the 2023 season, but impacts are expected to continue into July.



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There's been a record-breaking sargassum seaweed bloom in 2023 in the Caribbean Sea. In order to help you plan your beach vacation, we've created a list of Caribbean beaches not affected by sargassum seaweed historically. This article was originally published in 2019.

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The seaweed belt remains huge – there's an estimated 6 million tons of sargassum still floating around – but it's down several million tons in just a few months. That's good news for residents, visitors and workers of beach areas of the Gulf of Mexico and Caribbean.

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The amount of sargassum seaweed in Cancun varies by season and even daily. Generally the worst months for seaweed are July and August.

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According to the University of South Florida oceanography laboratory, the large sargasso seaweed mat in the east-central Atlantic in early 2023 meant a high risk of major blooms of seaweed in 2023.

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Palm Beach in Aruba, Dutch Caribbean It's one of the most reliable Caribbean islands without sargassum. While there are several small, boutique-sized hotels in Aruba, here are two of our favourite large resorts on Palm Beach and Eagle Beach.

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Popular resort hubs, including Playa del Carmen and Tulum, have ramped up efforts to deter sargassum from affecting travelers. What is this? Both destinations have set up temporary barriers and hired more cleaners in an effort to attract more travelers.

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Sargassum, a brown seaweed that floods the Mexican Caribbean coast during the spring and summer months, is typically present until the fall months. Its presence is something that many visitors would rather not deal with on their vacations because it's unsightly and smells.

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USF reports it remains difficult to predict exact timing and location for individual beaching events but substantial amounts of the seaweed are expected in May in both the Caribbean Sea and Gulf of Mexico. June is forecast to be the likely peak of the 2023 season, but impacts are expected to continue into July.

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However due to ocean currents, the amount of seaweed landing on beaches in the Caribbean and the Gulf of Mexico in June and July 2023 was lower than expected. There's more good news! The sargassum seaweed forecast for September 2023 is minimal seaweed in the Caribbean Sea.

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7 September 2023 Update: The Turks and Caicos is experiencing medium levels of sargassum at this time. Grace Bay, Leeward Beach, Sapodilla Bay, Taylor Bay, and the Bight Beach remain largely free of sargassum. Sargassum that washed onshore in late August has largely dissipated.

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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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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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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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Exclusion booms or barriers are moored in selected locations to keep the Sargassum seaweed off the beach where it will move with the wind and current either back to sea or down the coast.

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Sargassum seaweed washing up on Florida beaches has ebbed to levels normally seen in early fall, even below normal in some areas. The once-anticipated 5,000-mile-wide bog in the Atlantic and Caribbean has rapidly — and mysteriously — disappeared.

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