Cancún: how many days you need and when to avoid the sargassum

When to go, and the two seasons nobody mentions

There are three overlapping calendars here: the weather, the hurricane risk and the sargassum seaweed. The third is the one that most often ruins a beach trip and the one least likely to be on your radar.

1. January: Go nowJan
2. February: Go nowFeb
3. March: Go nowMar
4. April: Go nowApr
5. May: Worth it, butMay
6. June: Worth it, butJun
7. July: Worth it, butJul
8. August: Worth it, butAug
9. September: Think twiceSep
10. October: Think twiceOct
11. November: Go nowNov
12. December: Go nowDec

• Go now
• Worth it, but
• Think twice

• December to April

  Go now

  Dry season, low seaweed risk, best beaches

  The dry, warm, low-humidity window, outside hurricane season, and generally the clearest water of the year. It is also the busiest and most expensive — especially the weeks around the new year and around Easter, which moves each year.

• November

  Go now

  The sweet spot at the end of the risk window

  Hurricane season is winding down, the crowds have not arrived, prices are lower and the sea is still warm. The single best value month if you are comfortable with a small residual storm risk.

• May to August

  Worth it, but

  Peak sargassum risk

  Sargassum seaweed tends to arrive in quantity between roughly spring and late summer, and in a bad year it covers the beaches and smells. It varies enormously year to year and beach to beach — the island and west-facing beaches are usually much less affected. Worth checking current reports before booking a beach-led trip.

• September and October

  Think twice

  The peak of hurricane season

  Statistically the highest-risk months for hurricanes in this part of the Caribbean, and the wettest. Prices are at their lowest for exactly that reason. If you go, travel insurance and flexible bookings stop being optional.

How to think about the trip

Cancún itself is a hotel strip, and treating it as the destination is what produces disappointing trips. It works far better as a base: the ruins, the cenotes, the smaller coastal towns and the islands are all within reach, and they are what people actually remember.

Four days is enough for the beach plus two excursions. A week lets you move down the coast rather than commuting back to the same hotel every evening — which is the shape multi-destination planning is for.

What is within reach

The coast road runs south from Cancún, and almost everything worth doing is strung along it or a short ferry away.

• Isla Mujeres and Cozumel — the islands, reachable by ferry, and calmer than the mainland strip.
• Tulum and the coast south — ruins on the sea, and a very different pace from the hotel zone.
• Chichén Itzá and Cobá — the major archaeological sites, inland. Both far better early in the day.
• Cenotes — the freshwater sinkholes, scattered through the interior. Cool, shaded, and the best answer to a hot afternoon.

Where to stay, and the decision that defines the whole trip

Here accommodation is not a logistical detail: it is the decision that defines the trip. Sleeping in Cancún's hotel zone and sleeping in Tulum or Playa del Carmen produce completely different holidays, even though the airport is the same.

The hotel zone is a strip of sand some twenty-odd kilometres long with large hotels on either side, very comfortable and fairly interchangeable with any other beach destination in the world. Everything that makes this coast special — cenotes, ruins, towns — is outside it, and that means one or two hours of travel each day.

Compare these areas against your priorities

Sargassum: what to know before you book

It is the factor that has changed this coast most in the last decade and the one that appears least in brochures. Sargassum is a seaweed that arrives in mass on Mexican Caribbean beaches, piles up at the shoreline and smells as it decomposes. When an episode is severe, the beach in the photograph is not the beach you find.

The important part: it does not arrive all year or everywhere. The heavy season tends to run from spring to late summer, peaking around the middle of that window, and winter is the clean period. And it varies enormously year to year, so no forecast made months ahead is worth anything.

• The west-facing coast is sheltered: Isla Mujeres, Cozumel and west-facing beaches get far less, because the weed arrives on the easterly current.
• Large hotels clean their stretch of beach every morning, and some deploy floating barriers. It is one of the few genuine advantages of a big resort here.
• There are sargassum tracking maps that publish the state of each beach within a few days. Checking that a week ahead is worth more than any historical average.
• If sargassum bites, the plan turns inland: cenotes, ruins and towns. Fresh water, shade, and no dependence on the sea.

Cenotes, ruins and getting around the peninsula

The Yucatán peninsula is a slab of limestone with no surface rivers: the water runs underneath, and cenotes are the openings where that system comes to light. There are thousands, from ones with a car park and a restaurant to ones at the end of a dirt track, and they are the most specific thing about this trip.

For getting around there are three ways and the choice changes the day a lot. A rental car is what gives real freedom for cenotes and smaller ruins. Colectivos — shared vans that leave when full — are dirt cheap and cover the main road. Organised tours are comfortable and take you to the busiest sites at the worst hour.

• Chichén Itzá fills up mid-morning with the coaches from the coast. Arriving at opening, or sleeping in Valladolid the night before, is the difference between a visit and a queue.
• Tulum has ruins on a clifftop with a beach below, which is why it is the most photogenic. It is also small: a good hour.
• Cobá and Ek Balam are far less visited and at some you can still climb, which is no longer the case at the big sites.
• Many cenotes are cash only and require a shower before entering. Regular sunscreen is banned: it has to be biodegradable, or none.
• The roads are good and driving is easy, but there are enormous unsigned speed bumps and frequent checkpoints.

Eating on the Riviera Maya, and the Yucatecan food almost nobody tries

In the hotel zone and on Fifth Avenue you get an international, expensive version of Mexican food. The real cooking of this region is Yucatecan and it is different from the rest of Mexico: less heat in the dish itself, with achiote-based recado rojo, citrus, and habanero served on the side so everyone adds their own.

Crossing a couple of streets inland in any coastal town halves the prices and improves the food. In Valladolid or Mérida it is a different league altogether.

• Cochinita pibil — pork marinated in achiote and sour orange, cooked underground. It is eaten in the morning and at midday; by evening it is gone.
• Sopa de lima, papadzules, panuchos and salbutes are the basic Yucatecan repertoire and almost nobody orders them on the coast.
• Habanero is far hotter than it looks. It is served in a separate salsa precisely for that reason.
• Agua de chaya, horchata or jamaica are the local mealtime drinks, and in fondas they come with the set lunch.
• Marquesitas — the region's street dessert: a crisp wafer filled with Dutch cheese and something sweet. It sounds odd and it works.

Where to eat in Cancún, dish by dish

Cancún has two food economies and they barely touch. The hotel zone runs on all-inclusive buffets and chain restaurants at resort prices; downtown, ten minutes away by bus, is a normal Mexican city that eats normally. The single best decision you can make here is to take the R1 bus into the centre for at least one meal. Yucatán cooking is distinct from central Mexican and is the reason to bother.

• Cochinita pibil

  What to order

  The dish the whole peninsula is built on

  Pork marinated in bitter orange and annatto, wrapped in banana leaf and cooked slowly underground, served shredded with pickled red onion. It is a Yucatán dish and not a generic Mexican one — you will not find it done properly outside the peninsula. Traditionally a morning food; the best places sell out by early afternoon.

  Check it on Wikidata

• Sopa de lima

  What to order

  The regional soup, and the one to order at lunch

  Shredded turkey or chicken in a lime broth with crisp tortilla strips. Sharp, light and very Yucatecan. The lime here is a local variety, more floral and less acidic than the ones used elsewhere, which is why the soup does not taste the way you expect.

  Check it on Wikidata

• Tacos al pastor

  What to order

  The evening default, wherever you are

  Pork from a vertical spit, the same dish as in Mexico City, and the reliable cheap dinner in the downtown streets. Stands that only open at night are the ones to trust — that is the pattern here, and a taquería doing lunch and dinner both is usually doing neither especially well.

  Check it on Wikidata

• Bazaar

  Market

  Where to eat downtown, in one place

  The downtown markets are the honest counterpart to the hotel zone: fondas, juice stands, and cooked food at local prices. This is a working market rather than a craft market despite what the souvenir stalls at the front suggest. Walk past the first row of stalls and eat where the food is being made rather than displayed.

  Check it on Wikidata

Things that change the trip

1. 1Check current sargassum reports before booking, not after. Local monitoring maps are published and updated through the season.
2. 2The ruins are hot and unshaded. Arriving at opening rather than mid-morning is the difference between enjoying them and enduring them.
3. 3Colectivos along the coast road are cheap, frequent and how most people actually move around. Far better value than organised transfers.
4. 4Cenotes are the right plan for the hottest part of the day, and there are far more than the handful that appear in every tour.
5. 5Prices inside the hotel zone bear little relation to prices twenty minutes away in the city itself.