There are some small Mayan vestiges of the pre-Columbian Maya civilization in Cancún. El Rey (Las Ruinas del Rey) is located in the Hotel Zone. El Meco, a more substantial site, is found on the mainland just outside the city limits on the road north to Punta Sam.
Close by in the Riviera Maya and the Grand Costa Maya, there are sites such as Cobá and Muyil (Riviera) the small Polé (now Xcaret), and Kohunlich, Kinichná, Dzibanché, Oxtankah, Tulum, and Chacchoben, in the south of the state. Chichén Itzá is in the neighboring state of Yucatán.

Cancún is served by Cancún International Airport with an added main runway that commenced operation as of October 2010. It has many flights to North America, Central America, South America, Asia, and Europe. It is located on the northeast of the Yucatán Peninsula serving an average of about fifteen million passengers per year. The airport is located around 20 km (12 mi) from the hotel zone, approximately a 20 minute trip by car. The island of Isla Mujeres is located off the coast and is accessible by ferry from Puerto Juárez.

Cancún has a tropical climate, specifically a tropical wet and dry climate, with few temperature differences between seasons, but pronounced rainy seasons. The city is warm year-round, and moderated by onshore trade winds, with an annual mean temperature of 27.1 °C (80.8 °F). Unlike inland areas of the Yucatán Peninsula, sea breezes restrict high temperatures from reaching 35 °C (95 °F) on most afternoons. Annual rainfall is around 1,340 millimetres (52.8 in), falling on 115 days per year. More temperate conditions occur from November to February with occasional refreshing northerly breezes, it is drier and becomes hotter in March and April. It is hottest from May to September, due to proximity to the Caribbean and Gulf humidity is high the year round, especially so during hurricane season (averages close to 70% on rainfree days). The hotel zone juts into the Caribbean Sea, it is surrounded by ocean therefore daytime temperatures are around 1-2C less and windspeeds are higher than at the airport located some distance inland, which is the official meteorological station for Cancún, averages as shown below.

Thanks to the Yucatán current continually bringing warm water from further south, the sea temperature is always very warm, with lows of 79 °F (26 °C) in winter and highs of 84 °F (29 °C) in summer.

The tropical storm season lasts from May to December, the rainy season extends into January with peak precipitation in October. February to early May tend to be drier with only occasional scattered showers. Cancún is located in one of the main Caribbean hurricane impact areas. Although large hurricanes are rare, they have struck near to Cancún in recent years.