Cancún is a coastal city in Mexico's easternmost state, Quintana Roo, on the Yucatán Peninsula, Mexico. Cancún is located on the Yucatan Channel that separates Mexico from the island of Cuba in the Greater Antilles. Cancun and the surrounding area often referred to as the Mexican Caribbean or the Mayan Riviera.

Cancún's climate is warm and tropical, moderated by the marine breezes created by onshore trade-winds, which circulates through its avenues. Depending on the season, maximum temperatures range from 26 °C (78.8 °F) in January to 32 °C (90 °F) in June and between 18 °C (64.4 °F) and 25 °C (77 °F) at night. Temperature extremes have ranged between a maximum of 39.5 °C (103.2 °F) and a minimum of 9.5 °C (49.2 °F) 5 km (3.1 mi) inland at the Airport at the south end of the city. More temperate conditions occur from November to February and it is hottest from April to September. Due to it's proximity to the Caribbean and Gulf, humidity is high all-year around, averaging close to 70% on rain free days.

The tropical storm season lasts from May to December. The rainy season extends into January with peak precipitation in September. February to early May tend to be drier with only occasional scattered showers. Although large hurricanes are rare, they have struck near Cancun in recent years. Hurricane Wilma, in 2005, was the largest. Hurricane Gilbert made a devastating direct hit on Cancún in September 1988.