Marathon (Sombrero) Sargassum Today — Live Status & 7-Day Forecast
Updated June 10, 2026 from Copernicus satellite data — refreshed 4× per day.
Status today: Clean · Beach Score 88/100
A palm-lined local favorite in the middle Keys, free to enter and genuinely pretty. Atlantic-facing, it catches seasonal seaweed, and the county rakes on a schedule rather than daily — so timing matters in summer. Off-season, it is one of the nicest free beaches in the Keys.
7-day forecast
Wed: Clean · Thu: Clean · Fri: Clean · Sat: Clean · Sun: Clean · Mon: Clean · Tue: Clean
Resorts on this beach
Nearby beaches
Live Sargassum Map of Florida · Florida Sargassum Forecast — Next 7 Days, Beach by Beach · Florida Beaches Without Sargassum Today · Sargassum Season in Florida — 2026 Month-by-Month · Live map
Sargassum network: Martinique · Guadeloupe · Punta Cana · Cancún & Riviera Maya