The average high temperature in Cancun in December is a pleasant 23.9 °C (75 °F) with a mild, cooling breeze. The warmest average temperatures throughout the day are from 10 a.m. to 8 p.m. December is the third coolest month of the year. In the evenings, the average temperature can go down to a cool 18 °C (°F).
What clothes to wear in Mexico in December?
Always dress in layers, evenings during the rainy season are some of the coldest times of the year in Mexico City. For these months you will definitely need a sweater, fleece, or light jacket if you want to enjoy all of that great outdoor seating at restaurants. Bring socks.
Is Mexico expensive in December?
Airfare and accommodation prices tend to mirror the high and low seasons. Flights, hotels, and other travel expenses can surge starting in mid-December, when visitors from the U.S. escape the frigid winter weather and take advantage of the holiday break.