Seaweed in Cancun, Cozumel and the Riviera Maya update 2021

Here’s an update on the current seaweed arrival in Cancun, Cozumel, Isla Mujeres, Playa del Carmen, Puerto Aventuras, Puerto Morelos, Riviera Maya, Akumal and Tulum.

The Caribbean has been hit with an atypical arrival of a seaweed known as sargassum since 2014.  Back in the day, we used to believe it came from the “sea of sargassum”, a massive area of the Atlantic covered with algae. We even thought this was a natural phenomenon that was actually good for the preservation of the coastline. However, after years of research, scientists have determined that seaweed coming to the Caribbean is a result of global warming and human pollution and that it is indeed harmful to the beaches, the reefs, and the underwater species. As for today, we’re facing what could be described as a new seasonal plague, because the sargassum starts arriving on the coast around May and continues through Summer till September. Then the currents change and it suddenly stops.

Since Fly Cozumel is flying every day along Mexico’s Caribbean coast and the Yucatan peninsula, we can provide you with an accurate update on the presence of sargassum. We will continuously update this page with the latest information on the coasts of Cancun, Cozumel, Playa del Carmen, and Tulum. Be sure to bookmark it for future reference.

If you’re visiting Cancun, Cozumel, the Riviera Maya, or Tulum during Summer 2021, and feel like sargasso could mess with your vacation, don’t worry! There are lots of things to do to avoid it. For example: Did you know we’re flying daily to Chichen Itza from Cancun, Cozumel, and Playa del Carmen? Check out our Chichen Itza by airplane tour.


Seaweed in Cancun and Riviera Maya photos:

Cancun and Isla Mujeres

sargassum seaweed Update Cancun Riviera Maya
Seaweed at the Cancun hotels

Most of the Cancun Hotel zone beaches are seaweed-free or are getting moderate sargassum arrival. The hotels’ staffs are committed to cleaning the shore on a daily basis, so chances are you’ll get to enjoy crystal clear waters and white sand beaches.

As you can see in the next gallery, all the gorgeous beaches at Isla Mujeres are also seaweed-free. Enjoy Summer!

Seaweed in Cozumel photos:

Good news if you’re visiting the most beautiful island of the Mexican Caribbean. The Westside of Cozumel Island is free of algae arrival. The coasts on the West are clear for hotels and resorts like Iberostar, Occidental, Fiesta Americana, Presidente, Hotel Cozumel, Cozumel Palace, Hotel B, and Westin. Looking for a Beach Club without Seaweed in Cozumel? We highly recommend The Cabaña Beach.

The East Side of Cozumel (Mezcalitos, Playa Bonita, Hotel Ventanas al Mar) is working as a natural barrier for the rest of the island and the Riviera Maya, so unfortunately it is getting hit by the seaweed arrival.


Seaweed Update Cozumel East Side
The Eastside is working as a natural barrier to contain the seaweed arrival

Seaweed in Playa del Carmen photos

Unfortunately, Playa del Carmen and the rest of the Riviera Maya have been hit hard by the sargassum’s arrival in 2021, both on the beaches, and in the ocean. Hotel workers are being overwhelmed trying to clean the beaches, but they just can’t keep on with it.

If you’re coming to Playa del Carmen for vacation during Summer 2021, you may consider visiting Cozumel. Here’s a list of things to do in Cozumel from Playa del Carmen

Seaweed Update Riviera Maya Hotel
Puerto Aventuras
Seaweed Update Riviera Maya Beaches
Riviera Maya Coast


The seaweed situation in Tulum these days is bad, too. There is quite some seaweed on the beaches and the ocean, from the Tulum Ruins to the hotel zone.


Though it’s impossible to know when will the seaweed arrival stop or where it will hit harder, you can visit this post and check for updates; we’ll be updating useful info and the list of seaweed-free beaches. Here’s the latest info from the State’s seaweed monitoring network:

Daily seaweed monitoring 2021

The info we published today is the current situation and can change rapidly, feel free to leave a comment. It is our pleasure to give you a more specific Seaweed Update about a certain area or resort for Cancun, Cozumel, Playa del Carmen, Riviera Maya or Tulum.

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380 Replies to “Seaweed in Cancun, Cozumel and the Riviera Maya update 2021”

  1. Does Cozumel, Playa del Carmen or Puerto Morelos have any seaweed this Summer 2020? We are vacationing there mid July. Thank you for your update!

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On Board by Fly Cozumel is being issued monthly and covers brief information and news about the destinations of Fly Cozumel.