Seasons and Weather
Mexican temperatures are mostly similar to other northern hemisphere countries, where it's warmer in summer (July/August) and cooler in winter (December/January), but temperatures vary according to location and altitude.
The rainy season which starts around May/June and gradually works its way through until September/October throughout Mexico. Don't be put off by the term rainy season, as this generally only means sporadic downpours a couple of times a day. Of course, there are times when this is not the case but it is fairly rare for continual rain to persist. Generally the hottest time in Mexico will be the months March to May before the rain comes.
The hurricane season on the Caribbean side of Central America and the Gulf of Mexico runs from September to November. Usually this only means high winds and occasional storms. Therefore, the best time to visit Cancun and Playa del Carmen for a beach break is between December and April though this coincides with peak season, which means higher prices and more crowds.