Key West Seaweed 2025. If you’re hearing about this problematic seaweed in key west but don’t know anything about it, we’re here to help you understand why this sargassum is a problem and how to avoid it to have a marvelous beach vacation in key west. We monitor all areas and countries affected by sargassum.
Key west’s sargassum season arrives in late may or june and sticks around through hurricane season. Florida keys — while news reports created awareness of potentially record arrivals of sargassum, the scientific name for the brown seaweed that floats in ocean waters and can wind up on florida shorelines, a.