Cancun weather in December 2025

Expect 28°C daytime maximum temperatures in the shade with on average 6 hours of sunshine per day in Cancun in December based on long-term weather averages. There is usually 7 days with some rainfall and 84 mm of average monthly rainfall in December.

  • 28°C maximum daytime temperature in December in Cancun28
    28°C max day temperature
  • 6 hours of sunshine per day
  • 7 days with some rainfall in December in Cancun7
    7 days with some rainfall
  • 18°C minimum night-time temperature in December in Cancun18
    18°C min night temperature
  • 11 hours of daylight per day in December in Cancun11
    11 hours of daylight per day
  • Moderate heat & humidity in December in CancunM
    Moderate heat & humidity
  • 84 mm monthly rainfall in December in Cancun84
    84 mm of monthly rainfall
  • UV (maximum) index 7 (High) in December in Cancun7
    7 (High) UV index
  • 27°C sea temperature in December in Cancun27
    27°C sea temperature

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The December weather guide for Mexico's Caribbean Coast (Cancun) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

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More about Mexico's Caribbean Coast

How hot is it in Cancun in December?

Daytime temperatures usually reach 28°C in Cancun in December with moderate heat and humidity, falling to 18°C at night.

How sunny is it in Cancun in December?

There are normally 6 hours of bright sunshine each day in Cancun in December - that's 58% of daylight hours.

How warm is the sea around Cancun in December?

The average sea temperature around Cancun in December is 27°C.

Does it rain in Cancun in December?

There are usually 7 days with some rain in Cancun in December and the average monthly rainfall is 84mm.

Cancun December sunrise & sunset times

Browse the sunrise and sunset times for Cancun in December 2025. Select a month to view Cancun sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st December 2025 07:08 18:05
Tuesday, 16th December 2025 07:18 18:09
Wednesday, 31st December 2025 07:24 18:17

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