Cancun is a popular destination year-round, but timing matters. November through April is the dry season. Temperatures sit between 24C and 30C, humidity is lower, and Caribbean waters are calm and clear. This is peak season with the highest hotel rates and most visitors. December and January are busy with US and Canadian travelers seeking winter sun. Spring Break (March and early April) brings college students to Hotel Zone hotels and is the noisiest, most crowded period of the year. May and June are transitional months before the wet season, still warm and less crowded than peak. Hurricane season runs June through November, with the highest risk in September and October. Most years pass without a major storm, but travel insurance is recommended during this window. July and August have hot, humid weather around 32C to 36C and brief afternoon rain showers. Whale shark swimming season runs June through September in the open waters near Isla Mujeres.