But already, sargassum beachings are increasing, with the southern regions of Hispaniola, Jamaica and Puerto Rico looking likely to be the most impacted. The Great Atlantic Sargassum Belt is the largest macroalgae bloom in the world, and this year's bloom is the largest recorded, spanning more than 5,000 miles.
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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.
As summer is now in full swing, however, scientists with the University of South Florida Optical Oceanography Lab found a drop in the amount of sargassum blooms. Sargassum seaweed on a Fort Lauderdale beach. May 2023. They noted that the amount of seaweed dropped by about 9 million metric tons between May and June.
In Grenada, Grand Anse regularly tops the list of the world's best beaches due to its crystal clear waters and its 2 kilometre long stretch of white sand dotted with palm trees. It's also blessedly free of sargassum seaweed.
It's especially important to think about in 2023. 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.
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.
Sargassum is at its worst between April and August, peaking in July and August, although this year saw the seaweed arrive early, with some beaches being hit heavily in March. What is this?
A 5,000-mile-wide blob of seaweed is headed for Florida, threatening tourism across the Caribbean. “This is an entirely new oceanographic phenomenon that is creating such a problem — really a catastrophic problem — for tourism in the Caribbean region where it piles up on beaches up to 5 or 6 feet deep,” Lapointe added.
Additionally, beaches on Florida's east coast, including Palm Beach, Fort Lauderdale, and the Miami Beach area, are also seeing mounds of sargassum wash ashore. According to a report from AccuWeather, it is also impacting the southern regions of Hispaniola as well as areas of Jamaica and Puerto Rico.
All of the islands in the Caribbean are in the target zone for where sargassum might wash shore, he says, with the Southern Lesser Antilles (which includes islands such as Aruba, Bonaire, Curaçao, Margarita Island, and Trinidad and Tobago) likely to be slightly less impacted than elsewhere in the Caribbean.
I had island tour guests visiting from Margaritaville over in St. Thomas earlier this week, and they said that the sargassum was very bad over there, and that makes sense. The winds here typically blow east to west, which means they are blowing directly toward Margaritaville, Sapphire, and the Ritz, for example.
Sargassum inundations occur mainly on the windward coast of Saint Lucia like most Eastern Caribbean Island States, with occasional landings occurring on the southwest coast. This influences which assets are impacted.
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.