Seaweed Radar

Seaweed risk at Playa Mamitas

Riviera Maya · Playa del Carmen

NOAA rated the seaweed risk for the coast around Playa Mamitas as medium on November 12, 2026. It has stayed about there for two weeks.

The level describes sargassum offshore that could arrive. It is not a view of the sand, and it is not a forecast.

  1. Low
  2. Warning
  3. Medium (the newest level)
  4. High
NOAA data from · 2 days old

The last 14 days

October 30 – November 12, 2026

  1. October 30: high
  2. October 31: warning
  3. November 1: high
  4. November 2: high
  5. November 3: high
  6. November 4: high
  7. November 5: high
  8. November 6: high
  9. November 7: high
  10. November 8: medium
  11. November 9: medium
  12. November 10: medium
  13. November 11: medium
  14. November 12: medium

One mark for each day of NOAA data. The taller and darker the mark, the higher the risk for the coast around Playa Mamitas. 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
Days at each risk level for the coast around Playa Mamitas, by month
Month Days by level L W M H
2025
Jul001714
Aug00256
Sep30270
Oct31000
Nov30000
Dec31000
2026
Jan54220
Feb133120
Mar00283
Apr10290
May00229
Jun −3001710
Jul −100327
Aug −100030
Sep −103521
Oct12721
Nov0057

Which way it faces

Faces southeast, open to the Cozumel channel.

Beaches open to the sea on that side are usually the first to collect seaweed when it arrives.

Shoreline around Playa MamitasPlaya Mamitas faces southeast, onto the Cozumel channel.Playa Mamitasfaces southeastN2 km
Shoreline traced from NOAA’s map. Not for navigation.

The sheltered beach nearby

Playa Palancar, 31 km south, faces west.

NOAA’s newest level for the coast around it is medium.

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Questions

Is there seaweed at Playa Mamitas 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 Playa Mamitas as medium. That is about sargassum offshore that could come in.
Which months are worst for seaweed around Playa Mamitas?
In NOAA's daily record since July 2025, the months with the most medium or high days for this coast were July 2025 (31 of 31 days), August 2025 (31 of 31 days) and March 2026 (31 of 31 days). October 2025, November 2025 and December 2025 had none.
Does it matter which way Playa Mamitas faces?
Playa Mamitas faces southeast, onto the Cozumel channel. 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 42 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 42 km with one level for all of it. Medium is the third of NOAA's four levels: a fair amount of floating sargassum is in the waters off this coast and landings are likely somewhere along it.

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