This page gives no dates, and the reason is the point.
No source in this cluster's research register publishes a festival or holiday date for Mahahual or for this stretch of the Quintana Roo coast. Not one. So rather than assemble a plausible calendar from general knowledge about Mexico and present it as local information, this page states the gap.
That matters more than it sounds. A wrong festival date is the kind of error that costs someone a day: they plan a call around something that is not happening, or they miss something that is. And a date invented to fill a page looks identical to a researched one.
What is true, and general.
Mexico has a dense national calendar of civic and religious observances, and the country level picture is properly set out in the Mexico festivals guide. Several of those observances are marked across the whole country, so a call that happens to fall on one will feel different from a call that does not, and shops and offices may keep different hours.
What this page cannot tell you is which of them are marked here, how, or whether a village of this size holds anything of its own. Those are genuinely local questions and the register does not answer them.
How to find out for your own date.
Three sources, in order of usefulness. Your cruise line, which publishes port information for the specific day you arrive and has an interest in getting it right. An operator you book directly, who lives here. And the official Mexican tourism information for Quintana Roo, which will at least tell you about state level observances.
If something is happening, it is worth reshaping the day around: a village marking an occasion is a far better few hours than a beach club. But find that out from someone who knows the date, not from a page written months before it.
One thing that is not a festival.
A good deal of what is sold at cruise ports as a cultural performance is scheduled for ship arrivals rather than for a calendar. That is not dishonest and some of it is done well, but it is a show rather than an observance, and knowing which one you are watching changes what you take from it. The culture and etiquette guide covers the question worth asking.
If you would like your call checked against what is actually on, give us the date.
Sources
- UK Foreign, Commonwealth and Development Office: the Mexico travel advice landing page: that no travel can be guaranteed safe, and that anyone who chooses to travel should research their destination and get appropriate travel insurance. Accessed 21 September 2026.
- UNESCO World Heritage Centre: the World Heritage List entry for Sian Kaan: that it was inscribed in 1987 under the natural criteria (vii) and (x); that it lies in the state of Quintana Roo on the east coast of the Yucatan peninsula and covers 528,148 hectares of linked marine, coastal and terrestrial ecosystems along roughly 120 kilometers of coastline; and that its name means Origin of the Sky in the language of the Maya people who lived there. The entry gives no distance or travel time from any port. Accessed 21 September 2026.