The Mexican Caribbean coast looks perfect in the catalogue photos. White sand, turquoise water and palm trees.

The reality during the sargassum season can be quite different.

During our trip in May 2026, we saw beaches almost free of seaweed as well as stretches of coastline covered in a continuous brown layer several metres wide.

The situation was worst in Tulum, Playa del Carmen and on the open southern side of the Zona Hotelera in Cancún.

By contrast, we found clear water on the west coast of Isla Mujeres, on Isla Contoy and in the small sheltered bay of the Bahia Principe Akumal hotel.

This article is therefore not a list of beaches that will always be free of sargassum. No such guarantee exists in the Mexican Caribbean.

We’ll show you places where, thanks to the orientation of the coastline, the location of the islands or artificial breakwaters, the sea is most likely to remain clear in the long term.

If you’re still choosing a holiday destination, start with our comparison of Cancún, Playa del Carmen, Tulum and other areas. In this article, we focus solely on beaches and sargassum.

When is the sargassum season?

There is no exact start or end date, and it varies from year to year.

Generally speaking, however:

• November to February: the highest likelihood of clean beaches
• March and April: a transitional period; the first major seaweed blooms may already appear at this time
• May to September: highest risk, usually peaking in summer (June to September)
• October: the situation generally improves, but heavy surges of seaweed cannot be ruled out

Even a winter trip is no absolute guarantee, and in particularly heavy years the season may start earlier (as early as the end of March).

When choosing a holiday several months in advance, the location of the beach is therefore more important than photos from last week.

Where should you go if you want to avoid sargassum as much as possible?

We consider the following to be the best options:

• A few days by the sea: the north and west coasts of Isla Mujeres
• For the widest choice of beaches and snorkelling: the west coast of Cozumel
• For the most beautiful day trip: Isla Contoy
• For a resort on the mainland: a hotel with a naturally sheltered bay (though there are very few of these)
• When staying in Cancún: the northern side of the Zona Hotelera around Playa Langosta, Tortugas and Caracol
• For guaranteed swimming without seaweed: Bacalar Lagoon or the cenotes (though this won’t be swimming in the sea)
• 👉 Compare hotels on Isla Mujeres
• 👉 Compare hotels in Cozumel
• 👉 Book a trip to Contoy Island

Map of beaches with the lowest risk of sargassum

The map distinguishes between four types of locations:

• Green: the best long-term likelihood of clear seas
• Yellow: usually smaller amounts than on the open coast, but conditions are highly variable
• Red: open coastline, which is often affected during the season
• Blue: swimming away from the sea, where sargassum has no impact

The map shows the long-term risk based on the location and nature of the coastline, not the current conditions on a specific day.

🟢 Isla Mujeres: our safest bet

If your main priority is a lovely sandy beach with as little risk of sargassum as possible, we’d choose Isla Mujeres.

The best areas are the northern and western coasts, facing towards Cancún. The island itself shields this side from the seaweed drifting in from the open Caribbean, and the water in Bahía de Mujeres is also calmer.

The most reliable spots are, in particular:

• Playa Norte
• Playa Centro and Playa Sol near the harbour
• smaller hotel beaches along the west coast

We stayed in the south-west of the island at the Impression Isla Mujeres hotel.

During our stay, the water was clear and free of sargassum, whilst on the mainland we saw significantly more of it on the same days.

Playa Norte also has fine sand, very shallow turquoise water and minimal waves. Its downside isn’t the seaweed, but the crowds.

It’s best to stay right on the island and enjoy the beach in the morning before the day-trippers arrive, or later in the afternoon.

Be careful on the east coast of Isla Mujeres. It faces the open sea and sargassum appears there in large quantities.

You can find details on transport, beaches and accommodation in our Isla Mujeres guide.

Recommended hotels:

• Mia Reef Isla Mujeres is situated right at the northern end of Playa Norte
• Ixchel Beach Hotel is situated on the wide central stretch of Playa Norte
• Impression Isla Mujeres is an exceptionally expensive resort on the quiet south-western coast, which we have personally tried out

🟢 Cozumel: the best island for a longer stay

We didn’t visit Cozumel during this trip, so we don’t want to present this as our own personal experience.

In terms of location, however, the west coast of Cozumel is one of the best choices in the entire Mexican Caribbean.

The island acts as a natural barrier. Most of the seaweed is caught on its eastern side, which faces the open sea, whilst the tourist beaches, hotels and diving spots are mainly located on the sheltered western side.

We would particularly highlight:

• Playa Palancar
• Playa San Francisco and the neighbouring Paradise Beach
• Chankanaab
• Playa Azul in the north-west
• El Cielo sandbank, accessible only by boat

On the other hand, avoid the east coast of Cozumel. It is wilder, less developed and, during the sargassum season, is one of the most affected parts of the island.

You can get to Cozumel for a day trip by ferry from Playa del Carmen. However, if clear seas are one of the main priorities of your holiday, it makes sense to stay on the west coast for a few nights.

• 👉 Find accommodation and hotels in Cozumel

🟢 Isla Contoy: the most beautiful beach, but only for a day trip

During our trip, Isla Contoy came closest to our idea of a deserted tropical paradise. Light-coloured sand, palm trees, crystal-clear shallow water and no buildings.

The public beach lies on the sheltered side of the long, narrow island and is usually completely free of sargassum.

However, this has two major drawbacks:

• There is no accommodation on the island
• Access is restricted, and you can only get there via a licensed, organised – and rather expensive – tour
• You’ll have a maximum of around 2 hours of free time on the beach

Standard full-day trips from Cancún or Isla Mujeres currently cost approximately 139 usd to 199 usd per person.

Most combine a visit to Isla Contoy with snorkelling and a short stop at Isla Mujeres.

It’s expensive. However, if you’re looking for a truly beautiful beach even during the peak sargassum season, we believe this is where an organised trip makes the most sense.

Compare trips to Isla Contoy

🟢 Hotels with a sheltered bay on the Riviera Maya

On the open coast between Playa del Carmen and Tulum, there is no hotel that can guarantee a sargassum-free sea.

However, several resorts have small bays sheltered by rocks, a narrow entrance or artificial breakwaters. Seaweed may still find its way in, but the risk is lower than on the neighbouring open beaches.

Below is a list we have verified.

💬 Do you have any personal experience of another hotel without seaweed? Please let us know in the comments below the article – thanks!

Bahia Principe Explore Akumal: tried and tested

We noticed the biggest difference at Bahia Principe Explore Akumal.

In May, the main, long beach was full of sargassum and it was practically impossible to get into the sea. A few hundred metres further on, however, lies a smaller, north-facing cove protected by artificial breakwaters. The water there remained clear and free of seaweed throughout our stay.

It does have one drawback, though: the water is very shallow across almost the entire bay. It’s great for children and for cooling off, but less so for a proper swim.

• 👉 Check prices for Bahia Principe Akumal

Other naturally sheltered hotel beaches

We have either paid a brief visit to the following hotels or have verified from several sources that their beaches remain clean even during the sargassum season.

• Dreams Aventuras Riviera Maya is situated by a sheltered cove in Puerto Aventuras
• Occidental at Xcaret Destination has a very small private cove with a narrow entrance to the sea
• Hotel Xcaret México offers swimming in natural coves and river channels, but the open sea beach may be affected just as elsewhere

You should only choose these hotels if you don’t mind having less space for swimming. A sheltered cove is not the same as a long Caribbean beach.

We compare other areas and hotels in our guide to where to stay on the Riviera Maya.

🟡 The northern part of the Zona Hotelera in Cancún

The hotel zone in Cancún is shaped like the number 7. The difference between its short northern side and its long eastern side is crucial when it comes to sargassum blooms.

Beaches on the short side facing Bahía de Mujeres tend to have a lower risk:

• Playa Langosta
• Playa Tortugas
• Playa Caracol

The sea here is also calmer and shallower. However, do expect piers, boat traffic and a more urban setting. Not all areas have water as distinctly turquoise as the open beaches to the east.

In contrast, Playa Chac Mool, Playa Marlin, Playa Ballenas and Playa Delfines face directly out onto the open Caribbean.

They are more photogenic and have bigger waves, but during the sargassum season they pose a significantly greater risk – in fact, the greatest in the entire Mexican Caribbean region:

We describe specific beaches, transport and hotels in our guide to Cancún.

• 👉 Compare hotels in Cancún

🟡 / 🔴 Costa Mujeres and Playa Blanca: a lower risk is no guarantee

Costa Mujeres is often described as an area sheltered by the island of Isla Mujeres. This is only partly true.

The best location is the southernmost stretch around Punta Sam / Playa Mujeres, which lies directly opposite Isla Mujeres and faces more towards the bay than the open sea.

If we were to pick a single spot in this area with consistently better conditions, it would be Punta Sam.

However, it is not the prettiest beach on the Costa Mujeres. There are ferry piers and harbours in the vicinity, and the coastline does not have quite the holiday feel of the resorts further north.

Towards Playa Mujeres, Costa Mujeres and, in particular, Playa Blanca and Isla Blanca, the protective effect diminishes. Seaweed can appear in large quantities here.

We stayed in Costa Mujeres and also visited Playa Blanca. Although it is often cited as a lower-risk area, during our visit we saw virtually not a single metre of coastline free of sargassum – not even around Punta Sam!

We would therefore recommend Costa Mujeres for its modern all-inclusive resorts, the space it offers, and the trips to Isla Mujeres or Isla Contoy. However, we wouldn’t choose it as a safe haven from sargassum.

• 👉 Compare hotels on Costa Mujeres

🟢 Holbox and Las Coloradas: generally better, but further away

Both Holbox and the northern coast of Yucatán lie outside the main east-facing stretch of the Riviera Maya.

There is generally far less Sargassum here – traces of seaweed do appear, but compared to the Caribbean side, the amount is negligible.

Holbox

On Holbox, Punta Mosquito, the town beach and Punta Cocos tend to be particularly good spots. However, following a change in wind direction or a storm, seaweed may appear here too, and conditions can change significantly within a few days.

Furthermore, don’t choose Holbox based solely on the sargassum. The sea is exceptionally shallow, sometimes murkier and a different colour to that at Playa Norte or western Cozumel.

We wouldn’t make the long journey here just for a day’s swim. It makes sense to stay on the island for at least a few days.

• 👉 View accommodation on Holbox

Las Coloradas

During our visit, the beach at Las Coloradas was free of sargassum. However, this is a very remote and wild stretch of coastline with no standard tourist facilities; it is not a beach resort.

Include Las Coloradas in your road trip for its pink salt lagoons and natural beauty. It’s not worth driving several hours from Cancún or Tulum just for a swim.

🔵 Bacalar: no sargassum, but it’s not the sea

Bacalar Lagoon is the best choice for anyone whose main priority is swimming in crystal-clear water and who doesn’t mind that it’s not by the sea.

There is no sargassum here, as it is an inland freshwater lagoon. You can expect calm waters, jetties, kayaks and boat trips, rather than long sandy beaches and ocean waves.

Bacalar lies far to the south, and it doesn’t make sense to visit it as a last-minute day trip from Cancún or Tulum. We’d recommend including it in a road trip lasting at least two nights.

If you’re already staying in Playa del Carmen or Tulum and the beaches are covered in seaweed, a simpler alternative would be the nearby cenotes or a day trip to the west coast of Cozumel.

• 👉 Find accommodation near Bacalar Lagoon
• 👉 Book a boat trip on Bacalar Lagoon

🔴 Where is the sargassum most prevalent?

The greatest risk is posed by beaches facing directly east or south-east towards the open Caribbean.

During the season, we wouldn’t rely on the sea being clear, particularly in these areas:

• Tulum, including Playa Paraíso and the hotel zone
• the beaches around Playa del Carmen
• Puerto Morelos
• the public beaches of Akumal and the resorts between Playa del Carmen and Tulum
• the eastern and southern parts of the Zona Hotelera in Cancún
• the east coast of Cozumel
• the east coast of Isla Mujeres
• Mahahual and Xcalak in the south of Quintana Roo

This does not mean that these beaches are bad all year round. In winter or when the wind is favourable, they tend to be perfectly clean.

It’s just that during the peak sargassum season, there is a significantly higher risk there than on the western sides of the islands.

How can you check the current condition of the beach?

Conditions can change within a single day depending on the wind, waves and sea currents. The weather forecast alone is not enough.

A few days before your visit, we combine three sources:

1. Daily bulletins from the Mexican Navy (SEMAR ) show the amount of seaweed at sea and its likely direction of movement
2. Sargazo.info compiles up-to-date reports and photographs from individual beaches
3. The latest photos posted by guests of a particular hotel on social media and in reviews show the conditions directly in front of the resort

Do not trust photographs that are several months old.

Similarly, an email from the hotel stating that the beach is ‘cleaned regularly’ is not enough. Cleaning removes the seaweed from the sand, but it does not clean the water, into which more seaweed continues to drift.

How would we plan our holiday?

If you’re travelling between May and September and a clean sea is one of your top priorities, we wouldn’t base your entire stay on a single open beach.

We’d choose one of these options:

• A few nights in the north of Isla Mujeres, and spend the rest of your trip exploring cenotes, historical sites and the interior
• A stay on the west coast of Cozumel, if your main goals are swimming, snorkelling and diving
• A resort with a sheltered bay and a good-quality swimming pool
• A combination of mainland accommodation with a few nights by the Bacalar lagoon
• Accommodation with free cancellation and the option to check recent photos shortly before departure

The biggest mistake is to book an expensive resort based solely on a catalogue photo of the beach and assume that daily cleaning will sort out the algae in the water.

Compare accommodation on the Riviera Maya

Frequently asked questions

Is there a beach on the Riviera Maya that’s completely free of sargassum?

There is no beach where cleanliness can be guaranteed every day.

In the long term, the best chances are on the northern and western beaches of Isla Mujeres, the west coast of Cozumel and physically sheltered hotel bays.

Is Isla Mujeres or Cozumel better?

For a short stay and a classic sandy beach, we’d choose Isla Mujeres.

Cozumel offers a longer coastline, a wider choice of places to stay and better conditions for snorkelling and diving. We’ve only been to Isla Mujeres ourselves.

Is Costa Mujeres protected from sargassum?

Only partially. The best location is southern Punta Sam. Further north towards Playa Mujeres, Costa Mujeres and Playa Blanca, the protection diminishes and there can be just as much seaweed as elsewhere along the coast.

Does the hotel remove sargassum from the beach?

Large resorts often clear the sand every morning, and some use barriers out at sea.

However, even thorough cleaning cannot guarantee clean water.

When the tide is strong, seaweed can reach the shore between the barriers faster than the staff can remove it.

Is sargassum dangerous?

Floating sargassum is a natural part of the ocean and provides shelter for marine life.

The problem arises when large quantities accumulate near the shore.

Decomposing seaweed gives off an unpleasant odour and releases gases that can irritate the eyes and respiratory tract. We would not linger for long near large, foul-smelling patches, particularly if we were with small children or if we had asthma.