Seaweed risk at South Beach
Florida · Miami Beach
NOAA rated the seaweed risk for the coast around South Beach as low on November 12, 2026. That is lower than the week before.
The level describes sargassum offshore that could arrive. It is not a view of the sand, and it is not a forecast.
- Low (the newest level)
- Warning
- Medium
- High
The last 14 days
October 30 – November 12, 2026
- October 30: medium
- October 31: medium
- November 1: medium
- November 2: medium
- November 3: medium
- November 4: warning
- November 5: warning
- November 6: low
- November 7: low
- November 8: low
- November 9: low
- November 10: low
- November 11: low
- November 12: low
One mark for each day of NOAA data. The taller and darker the mark, the higher the risk for the coast around South Beach. A dotted mark is a day NOAA published no map.
Month by month
Days at each level, July 2025 – November 2026. A minus after a month counts days NOAA published no map.
- L
- Low
- W
- Warning
- M
- Medium
- H
- High
| Month | Days by level | L | W | M | H |
|---|---|---|---|---|---|
| 2025 | |||||
| Jul | 9 | 3 | 12 | 7 | |
| Aug | 20 | 3 | 3 | 5 | |
| Sep | 2 | 2 | 0 | 26 | |
| Oct | 25 | 5 | 1 | 0 | |
| Nov | 28 | 0 | 2 | 0 | |
| Dec | 27 | 1 | 3 | 0 | |
| 2026 | |||||
| Jan | 31 | 0 | 0 | 0 | |
| Feb | 27 | 1 | 0 | 0 | |
| Mar | 20 | 5 | 6 | 0 | |
| Apr | 10 | 4 | 9 | 7 | |
| May | 2 | 1 | 21 | 7 | |
| Jun | 4 | 0 | 15 | 11 | |
| Jul −1 | 0 | 1 | 1 | 28 | |
| Aug −1 | 0 | 1 | 4 | 25 | |
| Sep −1 | 8 | 1 | 3 | 17 | |
| Oct | 7 | 0 | 16 | 8 | |
| Nov | 7 | 2 | 3 | 0 | |
Which way it faces
Faces east, open to the Atlantic.
Beaches open to the sea on that side are usually the first to collect seaweed when it arrives.
Morning report
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Questions
- Is there seaweed at South Beach right now?
- Satellites cannot see the sand, so nobody can say from this data alone. As of November 12, 2026, NOAA rates the risk for the coast around South Beach as low. That is about sargassum offshore that could come in.
- Which months are worst for seaweed around South Beach?
- In NOAA's daily record since July 2025, the months with the most medium or high days for this coast were July 2026 (29 of 30 days), August 2026 (29 of 30 days) and May 2026 (28 of 31 days). January 2026 and February 2026 had none.
- Does it matter which way South Beach faces?
- South Beach faces east, onto the Atlantic. Beaches open to the sea on that side are usually the first to collect seaweed when it arrives.
- Where does the level come from?
- From NOAA's Sargassum Inundation Risk map, which NOAA publishes daily and labels experimental. NOAA scores the shoreline in long runs. On that day this beach sat in a run of about 190 km with one level for all of it. A beach and its neighbour can share a level and still look different on the ground.
- How often does this page change?
- Once a day, by itself, after NOAA posts its map. NOAA's map runs one to two days behind the calendar, so the page always shows the date of the data it is quoting.
Sources and limits
Data courtesy of NOAA/AOML, NOAA CoastWatch, and USF.
The level comes from NOAA’s daily Sargassum Inundation Risk product, which NOAA calls experimental, not a forecast. NOAA scores the shoreline in long runs. On that day this beach sat in a run of about 190 km with one level for all of it. Low is the bottom of NOAA's four levels: its satellites found little floating sargassum in the waters off this coast over the past week.
NOAA's map from 2 days ago, the newest it has published. Seaweed Radar rewrites this page once a day by itself. NOAA does not endorse this site. How it works