Climate averages 1991–2020
Cancún weather
in December.
A warm, moderately wet month: the 11th warmest and the 4th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a warm month in Cancún: daytime highs average 25.9°C and nights cool to about 23.1°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 61 mm of rain on roughly 11 days, which makes December a moderately wet month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 52 min on an average December day.
The nearest other city in this atlas is Playa del Carmen (65 km away). In December its highs average 26.2°C, about as warm as Cancún, with 54 mm of rain.
Among the 153 cities listed in Mexico, Cancún ranks joint 30th of 153 for the warmest December highs and 143rd of 153 for the driest December (rainfall, lowest first). The mean December high of those 153 cities is 22.7°C; Cancún is 3.2°C warmer than that mean.
From December to January, average highs fall by 0.6°C to 25.3°C, and monthly rainfall rises from 61 mm to 67 mm.
The annual picture
December in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Cancún climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 25.3°C22.3°C | 22.3°C | 67 | 10.7 | 11.011 h |
| February | 26.0°C22.7°C | 22.7°C | 33 | 6.7 | 11.411 h |
| March | 26.8°C23.3°C | 23.3°C | 25 | 5.0 | 12.012 h |
| April | 28.2°C24.4°C | 24.4°C | 26 | 4.7 | 12.613 h |
| May | 29.0°C25.4°C | 25.4°C | 75 | 9.6 | 13.113 h |
| June | 29.1°C26.0°C | 26.0°C | 133 | 15.3 | 13.413 h |
| July | 29.7°C26.4°C | 26.4°C | 65 | 11.3 | 13.313 h |
| August | 29.8°C26.4°C | 26.4°C | 87 | 14.3 | 12.913 h |
| September | 29.2°C25.9°C | 25.9°C | 162 | 20.2 | 12.312 h |
| October | 28.0°C25.1°C | 25.1°C | 190 | 19.1 | 11.712 h |
| November | 26.7°C24.0°C | 24.0°C | 90 | 11.7 | 11.111 h |
| December, selected | 25.9°C23.1°C | 23.1°C | 61 | 11.4 | 10.911 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
December in nearby cities
- Playa del Carmen in DecemberMexico · 65 kmHigh 26.2°C · Low 22.5°C · 54 mm rain
- Cozumel in DecemberMexico · 76 kmHigh 25.9°C · Low 24.1°C · 66 mm rain
- Kanasín in DecemberMexico · 283 kmHigh 29.2°C · Low 19.6°C · 22 mm rain
- Mérida in DecemberMexico · 289 kmHigh 28.8°C · Low 19.8°C · 22 mm rain
- Chetumal in DecemberMexico · 332 kmHigh 27.1°C · Low 21.2°C · 55 mm rain
- Pinar del Río in DecemberCuba · 353 kmHigh 26.7°C · Low 19.1°C · 26 mm rain
- Campeche in DecemberMexico · 410 kmHigh 28.8°C · Low 21.0°C · 22 mm rain
- Belmopan in DecemberBelize · 480 kmHigh 26.5°C · Low 20.0°C · 76 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Cancún) is explained once on the Cancún year overview and on the Sources, method and limits page.