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A May outlook from an NCCOS-funded project team indicates record-high Sargassum in the Gulf, Caribbean, and eastern Atlantic

map showing the average Sargassum abundance for the month of May 2026, with warm colors representing higher abundance.
A May outlook from an NCCOS-funded project team indicates record-high #Sargassum in the Gulf, Caribbean, and eastern Atlantic. Major beaching events have been reported around the Caribbean and Lesser Antilles islands as well as along the Florida Keys and east coast of Florida. Sargassum amount in most regions is likely to increase in June.