How much of the coast NOAA rated low, warning, medium or high, month by month, from July 2025 to October 2026. NOAA's daily archive starts in July 2025, so this is still a short record.
Low
Warning
Medium
High
No data
Worst months so far: September 2026, August 2026, July 2026.
Calmest months so far: December 2025, November 2025, October 2025.
The usual pattern across the Caribbean: sargassum builds from about April or May, peaks in summer, and drops off by November.
One NOAA report per week until Oct 2026, then every daily report.