Cancun Climate and Weather
The Yucatan Peninsula, including Cancun, is the hottest and most tropical part of Mexico, especially from June to August when average highs peak at 93F (34C). Low temperatures rarely drop below 68F (20C) and humidity tends to be high all year. Coastal breezes have a pleasant cooling effect on hot days.
The rainy season runs from May to October and is characterised by late afternoon tropical showers that usually last for a short time only. Cancun lies within the Atlantic Hurricane Belt and the flat terrain makes the Yucatan Peninsula especially vulnerable to storms, particularly between June and October. In fact, big storms can affect Cancun at any time of year and they can be violent, though they're usually short-lived. On average April is the driest month and October is the wettest.
The peak tourist season in Cancun runs from December to April, when the weather is warm and the sea reliably calm, making it a good time for watersports and scuba diving. Out of this peak season, prices at the resorts tend to drop dramatically and the peninsula is less crowded. Although the threat of hurricanes puts some travellers off, between June and October the weather can be wonderful (hot with cooling winds) and can be a great time to visit if no storms hit.