A handful of Mexican holidays meaningfully affect travel — crowds, prices, and sometimes which businesses are open — so it's worth checking your dates against the calendar before you book.
Semana Santa (Holy Week)
The week before Easter is one of the biggest domestic travel periods in Mexico, with families traveling in large numbers to beach destinations including Cancún. Expect higher prices and busier beaches than a normal week nearby.
Día de los Muertos (Day of the Dead)
Held around November 1–2, this is a significant cultural and family holiday, not a costume party — public altars (ofrendas) and community events happen in towns across the region, including downtown Cancún. Respectful observation is welcome; treating it purely as a photo-op isn't.
Independence Day (September 16)
Marked with public celebrations the night before (September 15) — expect fireworks, gatherings in town squares, and a livelier-than-usual downtown if you're around for it.
Christmas and New Year
Peak season for both domestic and international travel — book well ahead if your trip lands here, since this overlaps with Cancún's already-busiest tourist season.