Casa Marina Key West: sargassum, weather & water today

Sargassum season at Casa Marina Key West

Sargassum risk at Casa Marina Key West typically peaks around June (high in a typical year). Months most likely to see heavy seaweed: May, June, July, August. Lowest-risk months: January, February, March, October, November, December. Actual landings vary a lot by year, wind and currents; check the live conditions above.

Typical-year risk from the published seasonality of the Great Atlantic Sargassum Belt × this beach's exposure (60%). Beach faces 180°; onshore winds from that direction push seaweed ashore.

Cleanup & barriers

Offshore barriers

None.

Public cleanup

Monroe County and City of Key West remove from public beaches; most Keys shores are rocky.

Resort crews

Resort crews clear private beaches daily.

Typical clearing time

same-day to 2 days

Safety notes

US domestic

• Boating and snorkel safety: currents in channels.
• Lionfish/fire coral contact hazards.

Check official advisories and local flags before swimming. Decomposing sargassum releases hydrogen sulfide; avoid heavy piles.

Things to do near Key West, FL

• Duval Street & Mallory Square sunset
• Dry Tortugas National Park
• Hemingway Home
• Snorkel reefs (Sand Key)
• John Pennekamp Coral Reef State Park (Key Largo)
• Bahia Honda State Park

Fly in for the best beach days

Suggested dates fall in December, typically the lowest-seaweed month ahead for Casa Marina Key West. Change them to match the live forecast above.

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Nearest airports

• Key West Intl (EYW), ~3 km

Nearby resorts

• Southernmost Beach Resort Key West, FL · 1 km
• The Reach Key West Key West, FL · 1 km
• Pier House Resort & Spa Key West, FL · 2 km
• Sunset Key Cottages Key West, FL · 3 km
• Little Palm Island Resort & Spa Little Torch Key, FL · 40 km
• Parmer's Resort Little Torch Key, FL · 42 km