Insider’s Information to Seaweed Circumstances in Cancun and Riviera Maya (in 2025)

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In case you’re planning a seaside trip and are nervous concerning the present seaweed situations in Cancun and Riviera-Maya, this submit has essential details about seaweed season.

It additionally has the most recent updates on the Cancun seaweed drawback and particulars on sargassum seaweed in 2024 and the seaweed forecast for 2025.

Satellite tv for pc observations from December 2024 present a pointy rise in tropical Atlantic sargassum, signalling a probable main seaweed bloom in 2025.

Over the previous 10 years, I’ve personally walked the seashores of Mexico’s Caribbean coast throughout seaweed season many occasions. Whereas the amount of seaweed coming to shore varies yearly, sure seashores have extra sargassum seaweed than others.

This report is from my journeys to Cancun Riviera Maya in November 2024 and January 2025.

It consists of my skilled tips about planning the most effective seaside trip and how one can discover the most effective seashores for swimming, even through the top of seaweed season in Cancun.

Be aware: It is a recurring submit up to date with unique images, sargassum seaweed maps and data on seaweed situations and the standing of the present seaweed drawback in Cancun, Playa del Carmen, Cozumel, Puerto Morelos, Isla Mujeres and Tulum.

Cancun Seaweed Season Proper Now – A Fast Snapshot 

December 2024: Satellite tv for pc observations by the College of South Florida noticed a big rise in sargassum within the tropical Atlantic. The quantity of seaweed surpassed the seventy fifth percentile of the previous 13 years, strongly indicating that 2025 could also be one other main yr for sargassum.

June 2024: The forecast is by July 2024 onward, Cancun and the Mexican Caribbean coast will see a lower in sargassum.

February 2024: The outlook for 2024 by College of South Florida steered that there might be a main bloom of sargassum in 2024.

The college’s monitoring system recognized a big mat of sargassum seaweed within the Central Atlantic in February 2024. Nevertheless seaweed on Cancun, Tulum, Playa del Carmen seashores in 2024 was decrease than predicted.

Nevertheless, a lot depends upon ocean and wind currents.

Learn on to see unique images and study which areas might be in danger.

Sargassum Seaweed Details

What precisely is sargassum seaweed and why is it an issue? 

Sargassum (often known as sargazo and sargasso) is a kind of brown algae that typically lies within the open ocean within the Sargasso Sea within the North Atlantic.

Wrapped by ocean currents, this mat of seaweed floats on the floor of the water. It serves as a resting space and spawning floor for an enormous array of life from eels to sea turtles.

Whereas sargassum seaweed is a pure phenomenon that has been occurring for hundreds of years, the inflow of sargassum lately have been bigger, thicker and extra widespread.

Since 2011, blooms of sargassum have been showing within the tropics sweeping up from South America by the Caribbean alongside the coast of Mexico and into the Gulf of Mexico and Florida.

The summer time of 2018 witnessed the worst inflow of sargassum brown algae in current historical past. In 2022, the seaweed drawback was equally as dangerous. 

The amount of the sargassum seaweed mixed with variations within the composition of the seaweed itself, poses issues.

Massive portions of seaweed float on the floor of the water, wash up on seashores, entice marine life within the seaweed itself and dissipate the oxygen that fish have to breathe.

Numerous methods — from raking it manually to utilizing boundaries to catch the sargassum earlier than it reaches the shore  — have been devised to attempt to cope with the unprecedented waves of seaweed which have engulfed areas of the Caribbean and Mexico in 2015, 2018, 2019, 2020, 2021, 2022 and 2024.

Is it Harmful to Swim in Sargassum Seaweed?

Sargassum seaweed in itself doesn’t pose an issue, says Dr. Jeffrey Rapaport at Holy Identify Hospital in Teaneck (Emeritus head of Dermatology). As a substitute, it’s what the seaweed harbours that may trigger pores and skin irritations and different dangers.

The seaweed when floating on the prime of sizzling, shallow waters, can begin to play host to microbes and strains of micro organism the pores and skin just isn’t accustomed to coming in touch with. Additionally, you must do not forget that fish usually use sargassum as a breeding grounds — leaving toxins and eggs in seaweed.

With freshwater in addition to saltwater swimmers ought to be careful for the expansion of Cyanobacteria (which might usually be seen altering the water’s color to mild inexperienced).

Cyanobacteria can launch neurotoxins, which not solely can have an effect on the pores and skin however may cause the loss of life of neurons that management many of the muscle mass and actions in your physique.

One other danger happens when sargassum seaweed gathers in massive portions, washes up on seashores and begins to decompose. It releases hydrogen sulfide gasoline, or H2S, a colourless, toxic gasoline with an disagreeable rotten-egg odor,

In response to Eric Najarro, Administrator on the Dr. Otto Rodriguez San Pedro Polyclinic II in Belize, inhaling small doses of the gasoline can set off irritation of the eyes, respiratory points and nausea, particularly amongst at-risk individuals similar to these with bronchial asthma, the aged, infants and pregnant girls.

Sure animals, particularly canine, are additionally delicate to the inhalation of hydrogen sulfide.

One other well being danger to swimming with massive portions of sargassum seaweed is the potential for pores and skin irritations and rashes.

So if you happen to’re questioning if it’s protected to swim in sargassum seaweed, in line with the consultants I’ve consulted, it’s not advisable.

Be aware that pink tide and sargassum seaweed are two completely different issues. A pink tide is a bloom of algae that discolours coastal waters and releases harmful toxins.

Consuming shellfish or different seafood throughout an algal bloom is dangerous to people.

When is Seaweed Season within the Caribbean and Mexico?

Within the Caribbean, seaweed season is usually Could to October. The worst time for seaweed in Cancun, the Dominican Republic, Trinidad & Tobago and far of the Caribbean is through the summer time months. 

Searching for trip concepts on Caribbean islands not affected by sargassum seaweed? Try our Information to Caribbean Seashores with out Sargassum Seaweed. 

The seaweed season in Cancun is usually over by the top of October. Nevertheless, some cities similar to Puerto Morelos generally proceed to obtain sargassum seaweed previous that date.  

Nevertheless, the state of Quintana Roo has been engaged on methods to deal with the seaweed drawback.

Along with aerial surveillance, they’ve issued contracts to rent corporations to gather and get rid of the seaweed.  

Seaweed Circumstances in Cancun  

The portions of seaweed in Cancun and alongside the Caribbean coast will fluctuate relying upon ocean currents, the dimensions of the sargasso seaweed mat, seasonality, ocean currents and wind situations. 

If you wish to keep away from the worst time for seaweed in Cancun and cut back the chance of it ruining your trip, it’s value contemplating which seashores to decide on to your trip.

For instance there might be massive portions of algae in Petempich Bay, in Puerto Morelos, Recodo Seaside, within the municipality of Solidaridad (Playa del Carmen), in addition to Punta Mosquitos on Holbox Island. 

But the remainder of the coast might be comparatively clear. 

The place in Cancun is There No Seaweed? 

One of the best guess for seashores close to Cancun with no seaweed is to go to the island of Isla Mujeres or to the leeward coast of Cozumel by ferry.

Lovely Playa Norte (north seaside) on Isla Mujeres is nearly all the time away from seaweed. Most of the lodges on the southwest coast of the island are additionally seaweed free.

We simply returned from the newly-opened Impression Isla Mujeres by Secrets and techniques and cherished its small non-public seaside.

For extra data on this all-inclusive, adults-only luxurious resort, learn our full evaluation of Impression Isla Mujeres.

Another choice is Playa Mujeres on the mainland north of Cancun. It’s often shielded from seaweed inundations by Isla Mujeres.

Additionally on the mainland, Coral Seaside stretches alongside the northern shores of what’s generally known as Punta Cancun or probably the most northerly level of the Cancun Resort Zone.

 This public seaside often will get hit by seaweed however often it’s nothing main.

Subsequent door on the Grand Fiesta Americana Coral Seaside Cancun Resort & Spa, the non-public seaside is usually fully away from sargassum. It options powder smooth white sands and clear turquoise waters.

Nevertheless wind and ocean currents  can change and seaweed situations at Grand Fiesta Americana Coral Seaside Cancun can change shortly. 

SCROLL DOWN TO SEE THE LATEST MAP OF SEAWEED CONDITIONS in Cancun 

A bonus of Coral Seaside is that the waters are calm and the entry is gradual with no steep drop-off. This makes it superb for individuals who aren’t skilled swimmers.

In my view, that is the finest seaside in Cancun for swimming. Newbie swimmers, babies and seniors will all take pleasure in swimming at this stunning seaside.

Finest Cancun Seashores With out Seaweed – Playa Gaviotas and Playa Gaviotas Azul

One of the crucial common public seashores in Cancun, Playa Gaviotas Azul is positioned on the northern tip of the resort zone. 

Seaside entry  is between Coco Bongo and the Mandala Seaside Membership reverse Hooters by way of a slim alleyway. Present seaweed situations at Playa Gaviota Azul rely on the depth of the ocean currents. 

Most small clumps of seaweed on the sand are raked up by resort workers. There’s usually little or no sargassum seaweed floating offshore. However this isn’t all the time the case. 

Nevertheless wind and ocean currents can change and seaweed situations can change shortly. 

The most important lodges on these seashores embody the all-inclusive Krystal Cancun and the Hyatt Ziva Cancun on the level of the peninsula. In case you keep at a finances resort in Cancun with a seaside shuttle, that is the place you’ll be dropped off.

SCROLL DOWN TO SEE THE LATEST MAP OF SEAWEED CONDITIONS in CANCUN.

Finest Cancun Seashores With out Seaweed – Playa Delfines / Dolphins Seaside

This lengthy, extensive public seaside on the southern finish of the Resort Zone is called Playa Defines. It’s one of the vital common seashores in Cancun.

You’ll additionally see line-ups of individuals ready to get a photo-op in entrance of the CANCUN  signal.

The quantity of seaweed on Playa Delfines varies significantly from week to week. See beneath for a photograph of what it appeared like in 2018.

Nevertheless wind and ocean currents can change and seaweed situations can change shortly. 

If there’s numerous seaweed at Playa Delfines, an excellent choice is to take a ferry to Isla Mujeres or Isa Cozumel. The leeward seashores on these islands virtually all the time don’t have any sargassum seaweed. 

Verify our listing of the finest all-inclusive resorts in Cancun Riviera-Maya. 

Present Cancun Seaweed Circumstances – Sargassum Forecasts for 2025

Seaweed forecasts by the consultants have traditionally been fairly correct.

A report by Brigitta Ine van Tussenbroek, an ocean researcher from the Institute of Marine Sciences and Limnology on the Nationwide Autonomous College (UNAM) steered massive portions of sargassum seaweed would return to Mexico’s Caribbean coast. Her report was fairly correct. 

For seaweed season in 2025, the  Sargassum Early Advisory System (SEAS) forecasting  challenge confirmed a number of massive floating lots of seaweed within the Atlantic between southern Africa and Brazil.

Whether or not it lands in Cancun, Chetumal, Tulum or the Riviera Maya depended a lot upon atmospheric situations similar to commerce winds.

In response to the College of South Florida’s  Outlook of Sargassum blooms within the Caribbean Sea and Gulf of Mexico, primarily based on offshore situations, the seaweed forecast for 2025 suggests will probably be one other main Sargassum yr.

So it’s clever to maintain a watch on seaweed situations as landings of sargassum can change from daily.

Present Seaweed Circumstances in Tulum

How is the federal government coping with the seaweed drawback in Tulum, Playa del Carmen and Mexico’s Caribbean Coast?

When wanted, the federal government of Quintana Roo points an emergency declaration for the municipalities of Lázaro Cárdenas, Isla Mujeres, Benito Juárez, Puerto Morelos, Cozumel, Solidaridad, Tulum, Felipe Carrillo Puerto, Bacalar and Othón P. Blanco.

Declaring a State of Emergency allows native authorities to entry funding to fight the amount of seaweed by eradicating accumulations and blocking it by varied strategies.

Tulum and Chetumal have usually been hit the worst. However it’s essential to notice that from Tulum to Cancun seaweed situations can change day by day relying on tides and water temperature. 

If sargassum situations are dangerous on Tulum’s seashores, it’s value making an attempt the seaside membership at Caleta Tankah. The ocean right here usually has clear waters.

Or, head inland to Bacalar, a city set on a freshwater lagoon with spectacularly clear waters fed by underground cenotes.

 Playa del Carmen Seaweed in 2025

The favored resort city of Playa del Carmen has been experiencing a double whammy of challenges lately.

The principle issues are the erosion of its seashores and the inflow of sargassum seaweed alongside the coast. Seaweed in Playa del Carmen tends to get trapped and decompose.

This makes it scent and launch harmful gases similar to hydrogen sulfide gasoline, or H2S, a colourless, toxic gasoline with an disagreeable rotten-egg odor,. 

The seaweed season often ends in October in Playa del Carmen.

However if you happen to’re visiting Playa del Carmen in seaweed season, it’s doable to keep away from seaweed issues in Playa del Carmen by staying at resorts which have created inland seashores.

Each the Xcaret Resort Arte (adults-only) and Xcaret Resort (family-friendly) have created a number of inland seashores so company can keep away from main sargassum mats.

One other all-inclusive resort in Playa del Carmen, Impression Moxché by Secrets and techniques, additionally created a synthetic inland seaside the place you may take pleasure in smooth sand and clear water in seaweed season.

Additional south, a incredible all-inclusive resort with out seaweed is the Laborious Rock Resort Riviera Maya in Puerto Aventuras. It’s among the finest locations to remain in seaweed season in Cancun and Riviera Maya.

Right here, the inland seaside has no seaweed as a result of it’s protected by a rocky breakwater. However the tidal swimming pools enable recent seawater to enter. The water is obvious sufficient to snorkel amongst tropical fish and has an added bonus of being fairly calm.

Any sargassum seaweed that manages to sneak into the seaside zone is promptly eliminated by workers. So there’s no seaweed to build up and decay.

Sargassum Forecast for Seaweed Season in Mexico in 2025

In Mexico, sargassum seaweed season is usually between Could and October every year.

In case you journey to the Caribbean coast of Mexico exterior of that point interval you may typically keep away from massive mats of seaweed on the seashores. 

June 2024:

 Get the most recent seaweed maps on the Purple de Monitoreo del Sargazo Cancun Fb Web page .

July 2021:

March 2022 

In case you are planning a trip throughout seaweed season (Could to October), monitor present seaweed situations all through the Caribbean, Mexico and the Gulf of Mexico by consulting the next assets.

Sargassum Seaweed 2025 Forecast Assets

The assets can even assist plan a seaside trip by offering forecasts on seaweed in 2025.   

1. Verify the forecast on the College of South Florida’s  Outlook of Sargassum blooms within the Caribbean Sea and Gulf of Mexico.  
2. Seek the advice of the Sargassum Early Advisory System (SEAS), a forecasting  challenge primarily based in Texas meant to assist predict the motion of sargassum blooms. Initially created in 2013 to assist with forecasting of the big Sargassum landings in Texas, by 2017 the SEAS challenge had expanded to supply forecasting for the Gulf Coast, Mexico, Grand Cayman, Jamaica, Haiti, Saba, the Dominican Republic, Puerto Rico and lots of different  Caribbean islands. The SARGASSUM EARLY ADVISORY SYSTEM can forecast sargassum seaweed lots as much as eight days prematurely. 
3.  Get seaweed maps, updates and a Seaweed Report from the Purple de Monitoreo del Sargazo Cancun Fb Web page . This not-for-profit group is made up of engineers, biologists and different consultants who’re volunteering their time to supply monitoring experience and companies. They publish a map of areas affected by sargasso seaweed in Cancun, Riviera Maya, Cozumel and Tulum. 
4. Verify Riviera Maya and Cancun Seaside Webcams at Stay Webcam to see stay video frames up to date each 15 seconds.
5. Seek the advice of our article on Caribbean Seashores With out Seaweed for trip choices in Mexico and a number of other Caribbean islands.  
6. Subscribe to the free A Style for Journey publication for updates on the most effective seashores, seaweed situations and different journey suggestions!
7. Think about resorts at seaside locations on Mexico’s Pacific Coast the place there is no such thing as a sargassum. Common seaside locations embody Huatulco, Puerto Escondido and Puerto Vallarta.

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