You can expect 78-80°F days (23-27°C) while visiting Cancun in December. When the sun goes down, the temperatures in Cancun drop, but not by much. Nighttime temperatures in Cancun average about 70-75°F (21-24°C), though the humidity also usually isn't as bad as during the day.
What is Mexico like at Christmas?
There are candlelit processions, elaborate nativity scenes, Spanish Christmas carols, dancing and fireworks. While traditions like Christmas trees and Santa Claus have found a place in Mexican festivities, the holiday celebrations are firmly rooted in Spanish and indigenous culture.
What does Mexico do for fun on Christmas?
It's a full month of celebrations, marked with family feasts and lots of piñatas. Starting on 12 December and lasting until 6 January, Christmas celebrations in Mexico have their own flair. There are candlelit processions, elaborate nativity scenes, Spanish Christmas carols, dancing and fireworks.