Florida Sargassum Forecast — Next 7 Days, Beach by Beach
Updated June 10, 2026 from Copernicus satellite data — refreshed 4× per day.
Most sargassum information for Florida comes as a statewide bulletin or a monthly outlook — accurate in broad strokes, useless for deciding where to swim on Saturday. This forecast works at the level that actually matters: the individual beach. We track 12 of them, from Key West up to Daytona and across to Clearwater, and run a separate 7-day projection for each, because their realities diverge wildly — the Keys can be knee-deep in seaweed while Clearwater stays spotless. The model ingests fresh Copernicus satellite imagery daily, locates the mats drifting offshore, and projects what reaches which sand and when. You get a day-by-day outlook per beach, updated every morning. Check it before you commit to a beach weekend; the ocean does not read monthly bulletins.
7-day forecast — Florida
- Miami Beach (Clean, Beach Score 84/100) — Wed: Clean · Thu: Clean · Fri: Clean · Sat: Clean · Sun: Clean · Mon: Clean · Tue: Clean
- South Beach (Clean, Beach Score 84/100) — Wed: Clean · Thu: Clean · Fri: Clean · Sat: Clean · Sun: Clean · Mon: Clean · Tue: Clean
- Fort Lauderdale Beach (Clean, Beach Score 84/100) — Wed: Clean · Thu: Clean · Fri: Clean · Sat: Clean · Sun: Clean · Mon: Clean · Tue: Clean
- Palm Beach (Clean, Beach Score 84/100) — Wed: Clean · Thu: Clean · Fri: Clean · Sat: Clean · Sun: Clean · Mon: Clean · Tue: Clean
- Jupiter Beach (Clean, Beach Score 82/100) — Wed: Clean · Thu: Clean · Fri: Clean · Sat: Clean · Sun: Clean · Mon: Clean · Tue: Clean
- Key West (Smathers) (Clean, Beach Score 88/100) — Wed: Clean · Thu: Clean · Fri: Clean · Sat: Clean · Sun: Clean · Mon: Clean · Tue: Clean
- Key Largo (Clean, Beach Score 88/100) — Wed: Clean · Thu: Clean · Fri: Clean · Sat: Clean · Sun: Clean · Mon: Clean · Tue: Clean
- Islamorada (Clean, Beach Score 84/100) — Wed: Clean · Thu: Clean · Fri: Clean · Sat: Clean · Sun: Clean · Mon: Clean · Tue: Clean
- Marathon (Sombrero) (Clean, Beach Score 88/100) — Wed: Clean · Thu: Clean · Fri: Clean · Sat: Clean · Sun: Clean · Mon: Clean · Tue: Clean
- Cocoa Beach (Clean, Beach Score 84/100) — Wed: Clean · Thu: Clean · Fri: Clean · Sat: Clean · Sun: Clean · Mon: Clean · Tue: Clean
- Daytona Beach (Clean, Beach Score 85/100) — Wed: Clean · Thu: Clean · Fri: Clean · Sat: Clean · Sun: Clean · Mon: Clean · Tue: Clean
- Clearwater Beach (Clean, Beach Score 91/100) — Wed: Clean · Thu: Clean · Fri: Clean · Sat: Clean · Sun: Clean · Mon: Clean · Tue: Clean
How our forecast works
Satellites detect floating sargassum through the AFAI spectral index — mats reflect near-infrared light in a way open water does not. We pull this imagery from Copernicus and NOAA four times a day, then project each detected mat forward along wind and current vectors; in Florida, the Gulf Stream does most of the steering. Beached seaweed decays on an exponential curve with a 3.5-day half-life unless new material lands. Each beach gets a daily score from clean to avoid, corrected by community reports when clouds block the view. Days 1–3 carry the most confidence, and the whole forecast recomputes daily.
Live Sargassum Map of Florida · Florida Beaches Without Sargassum Today · Sargassum Season in Florida — 2026 Month-by-Month · Live map
Sargassum network: Martinique · Guadeloupe · Punta Cana · Cancún & Riviera Maya