The rainy season in Cancun, Mexico, falls between the end of August and mid-November. Afternoon downpours during the rainy season are common occurrences. Occasionally flooding happens during the rainy season as well.
The peak of the tourist season in Cancun is between December and April, falling completely outside the rainy season. The high tourist season typically ends directly after the Easter holiday. Hurricane season falls between June and mid-October, also outside of the prime time period for tourists in Cancun. Temperatures during the peak tourist season in Cancun average 85 F during the day and 65 F during the night.