Sargassum Tracker

All about sargassum: satellite images, forecasts and outlooks.

Forecast for July 4, 2026 - East winds 15-20 knots. Seas 3 to 5 feet. Rip currents. Small craft should exercise caution.
The CARICOOS buoys at Ponce, Vieques, San Juan, and St. John's, USVI, are currently undergoing maintenance. Updates will be provided as they become available.

USF OOL Long Term Outlook

LAST UPDATE: Jun 30, 2026

As predicted last month, the total amount of Sargassum in all but the East Atlantic region continued to increase in June, while the distribution patterns remained stable. The Caribbean Sea continued to show a record-high amount of Sargassum for June, and the total Sargassum amount in the Gulf reached 5 million metric tons, which nearly doubled the historical record in 2025. Further details can be found in the attached bulletin.

USF Sargassum Outlook 2026 - Bulletin 06

As a result, severe beaching events have been reported along the southeast coast of Florida. Likewise, beaching events have continued around the Caribbean and Lesser Antilles islands.

SARGASSUM ABUNDANCE INTENSITY

Details

Looking ahead: Sargassum amounts in most regions are likely to change slightly (either increase or decrease) in July. Beaching events around the Caribbean and the southeast coast of Florida will continue and likely increase. Some beaching events may also occur around Florida’s Panhandle region. The year 2026 is set to be at least the second-largest Sargassum year, as the total amount in June is only 10% lower than the historical record in 2025. All previous monthly bulletins, as well as daily imagery, can be found under the Sargassum Watch System (SaWS). Meanwhile, high-resolution Sargassum maps for selected coastal regions are also available in near real-time under “Satellite Data Products => High Resolution” on the OOL Website.

Other Tools

Disclaimer

The information bulletin is meant to provide a general outlook of current bloom condition and future bloom probability for the Caribbean Sea. By no means should it be used for commercial purpose, or used for predicting bloom conditions for a specific location or beach. The authors of this bulletin, as well as Caricoos, USF and NASA, take no responsibility for improper use or interpretation of the bulletin. Any use of the image, data, or graph from this bulletin page in reports or publications should obtain permission from the USF OOL group.