Hurricane season in Cancún: what an owner arranges

When is hurricane season in Cancún, officially?

From 1 June to 30 November: Cancún sits on the Caribbean, and the National Hurricane Center counts the Caribbean Sea as part of the Atlantic basin, whose season runs from June 1 to November 30. The other Mexican coast keeps a different calendar, so hurricane season in Mexico is really two seasons, and the Pacific one opens on 15 May.

Anyone asking when hurricane season is in Cancún, Mexico, should read the dates as a container rather than a promise. The same source adds that tropical cyclone activity sometimes occurs before and after these dates. The useful reading of 1 June is narrower: it is the date by which whatever has to be finished on a house should already be finished.

The ordinary weather of the same months, the two rainfall peaks and the humidity a closed house lives with, is set out month by month in Cancún weather for an owner. This guide keeps to the storms.

Which months have historically been the most active on the Caribbean coast?

The heart of the season is late summer and early autumn: the climatological peak of the Atlantic basin is 10 September, with most activity occurring between mid-August and mid-October. The first hurricane of an average season tends to form in early to mid-August, so June and July are quieter on average without being empty.

The two storms that matter most to this coast sit at the two edges of that peak, which is the reason not to plan by the average. Beryl, in July 2024, became the earliest category 5 hurricane on record in the Atlantic Basin and came ashore on the Yucatán Peninsula on 5 July. Wilma reached the same shore on 21 and 22 October 2005, a week after the mid-October edge.

For hurricane season in Tulum, Mexico, and along the rest of the Riviera Maya the calendar is the same, because the whole coast faces the same sea: Beryl's centre made landfall just northeast of Tulum at 1100 UTC 5 July, and Wilma's crossed Cozumel and then the mainland near Puerto Morelos, between Cancún and Playa del Carmen. How the Tulum house is looked after the rest of the year is on the page for Tulum.

What did Wilma in 2005 teach about houses on that coast?

That on this coast the dangerous variable can be duration rather than surprise. Wilma's centre made landfall on the island of Cozumel around 2145 UTC 21 October at category 4, crossed the mainland coast about six hours later, and then moved slowly northward, crossing and severely battering the extreme northeastern Yucatan peninsula until it emerged into the Gulf around 0000 UTC on the 23rd.

What that slowness means is in the observations. Isla Mujeres, across the bay from Cancún, experienced hurricane-force winds in gusts for nearly a 24-h period from 21-22 October, and Cancún itself recorded a 10-min average wind of 87 kt with a gust to 113 kt, which the report notes may not have been the station's maximum. The rain followed the same logic: according to the Meteorological Service of Mexico, a 24-h rainfall total of 62.05 inches was measured at Islas Mujeres, roughly 1,576 millimetres in a day. The record the same storm left at the Cancún station is in the guide to Cancún weather.

For a house, the lesson is about the order of failures. A short storm tests the roof and the openings once; a storm that stays tests them for a day and a night, then leaves water standing on terraces, in tracks and against walls for as long as nobody can get in. The preparation that matters is therefore the kind that keeps working unattended: drains that are already clear, openings already closed, nothing left loose that a day of wind can find.

The report is also candid about what was known afterwards. Damage was reported to have been very severe in portions of the northeastern Yucatan Peninsula, but detailed information from Mexico is not available. Nothing in the public record describes a particular house, which is why the owner's own dated record, taken before the season, is the one that counts.

Where do official warnings come from, and how far ahead did they come?

For the Mexican coast they come from Mexico's National Meteorological Service, with the National Hurricane Center's advisories alongside, and they are turned into alert levels through the SIAT-CT, the early warning system for tropical cyclones. Cenapred describes it as operating desde el año 2000, with the purpose of warning hasta 72 horas antes de que el fenómeno llegue.

The levels are colours rather than words: un semáforo de cinco colores: azul (el de menor riesgo), verde, amarillo, naranja y rojo. What happens on the ground is then a matter for civil protection, and the Ley General de Protección Civil sets the order: the first specialised response corresponde a las Unidades Internas de Protección Civil de cada instalación pública o privada, así como a la autoridad municipal, and only when an emergency exceeds the municipality does it pass to the state, which in Quintana Roo is the Coordinación Estatal de Protección Civil, and then to the federation.

On this coast those warnings have arrived with time to use. For Wilma, the report concludes that there was considerable lead time in the issuance of the hurricane warnings for the northeastern Yucatan Peninsula, posted well over 48 hours before landfall. For Beryl, a Hurricane Watch was issued for the landfall area by the meteorological service of Mexico 59 h before landfall, and a Hurricane Warning was issued 44 h before landfall. Read side by side, the two storms look like this:

The row that matters to an owner abroad is the fourth. Two days is enough to carry out a plan and not enough to make one, least of all from another country, on a phone.

What is prepared before the season, and what is checked after a storm?

Before 1 June, everything that has to keep working without anybody there: roof and terrace drains cleared and run with water, shutters and their fixings tested, every opening that can be closed known and closable, anything loose on a terrace assigned a place indoors, and a dated set of photographs of the house as it stands. After a storm, the same list read backwards, in the same order, with photographs taken from the same places.

The before list is ordinary scheduled work rather than an emergency, and its content belongs to preventive maintenance. What turns it into storm readiness is when it happens: the dry stretch before June, not the forty-four hours after a warning, which are the same forty-four hours every other house on the coast has.

The after list starts with the question Beryl put most plainly. Its report records that power outages affected nearly 433,000 people, with the worst impacts in the coastal area from Tulum to Cancun. A house without power is a house without its pumps, its refrigeration and its air movement, in the wettest weeks of the year. So the first visit checks water where it should not be and appliances that stopped, and the photographs it produces are compared against the ones taken before June.

What the house needs in the months between storms, and which works are booked into the dry window rather than chased in October, is a decision taken once a year as part of an annual plan.

Who decides when a house is closed up, and who goes in afterwards?

The owner decides, but in advance and in writing, so that nobody has to reach them in the forty-four hours that matter. The decision worth writing down names the alert colour at which the house is closed, who closes it, who holds the keys and the codes, and what that person reports and when.

Going back in is the second half of the same arrangement, and it has a constraint the owner does not control. The law gives the municipal civil protection unit the first responsibility for vigilancia y aplicación de medidas de seguridad, so the person with the keys goes in when the authorities on the ground allow it, not when a phone call from abroad asks them to. What that person sees should come back dated and itemised, with photographs, rather than as reassurance over a line that may not be working.

That is a standing arrangement rather than an emergency one, and what it looks like the rest of the year is set out in what a property manager does. The report that carries it, month after month and after a storm, is the monthly owner statement.