Cancún weather in December
Temperature, sea and sunshine in December: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in December
Excellent
Best time to visit: July, November – May
What is the weather like in Cancún in December?
In December, Cancún is warm: daytime highs average 26 °C, and even at night it stays warm at around 23 °C. The sea averages 27.3 °C – lovely and warm for swimming. The sun shines for around 7 hours a day. Rain is frequent, with about 11 rainy days and 55 mm in total. The air is often humid and muggy. All in all, December is an excellent month for a holiday in Cancún.
December compared
How the weather changes from November to January. Tap a month to open it.
| NovemberNov | DecemberDec | JanuaryJan | |
|---|---|---|---|
| Score | 82 | 83 | 83 |
| Day | 27° | 26° | 25° |
| Night | 24° | 23° | 22° |
| Sea | 28° | 27° | 27° |
| Sun | 7 h | 7 h | 6 h |
| Rain days | 12 | 11 | 10 |
More details for December
- Daylight
- 10 h 51 min07:17 – 18:08
- UV index
- 5 · moderateclear sky, noon (estimate)
- Muggy days
- 22 daysdew point 18 °C or more
- Wind
- 19 km/haverage daily peak
- Cloud cover
- 46 %on average
- Hot days
- 0 days30 °C or more
- Time zone
- UTC−5America/Cancun
How the score comes together
- Temperatureweight 35 %100 %
- Seaweight 25 %100 %
- Sunshineweight 20 %63 %
- Few rainy daysweight 20 %50 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in December
- Swimwear
- Sunscreen
- Light, breathable clothes
- Insect repellent
- Rain jacket or umbrella
Cancún in December: quick answers
Is Cancún hot in December?
Warm rather than hot: in December, daytime highs in Cancún average 26 °C and nights cool to about 23 °C.
Can you swim in Cancún in December?
Yes. In December the sea averages 27.3 °C – lovely and warm for swimming.
Does it rain much in Cancún in December?
Rain is frequent, with about 11 rainy days and 55 mm in total.
Cancún month by month
The whole year in CancúnAll destinations: Mexico
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, GeoNames (CC BY 4.0)