Cancún is a popular Caribbean tourist destination on the northeast tip of Mexico's Yucatán Peninsula, in Quintana Roo, which also is called the Mexican Caribbean. Next to 22 km (14 miles) of beaches, you'll find a wide variety of resorts, spas, clubs, and malls.
Peak season in Cancún tends to run from December to April. Airfare and hotel prices increase dramatically during these times, while dropping in the (northern hemisphere) summer and early autumn months. Late June is especially hot, so come prepared or try the off season. Hurricanes can be a major threat in late (northern hemisphere) summer and autumn.