Climate averages 1991–2020
Cozumel weather
in December.
A warm, moderately wet month: the 10th warmest and the 5th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a warm month in Cozumel: daytime highs average 25.9°C and nights cool to about 24.1°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 66 mm of rain on roughly 12 days, which makes December a moderately wet month (the 5th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 55 min on an average December day.
The nearest other city in this atlas is Playa del Carmen (20 km away). In December its highs average 26.2°C, about as warm as Cozumel, with 54 mm of rain.
Among the 153 cities listed in Mexico, Cozumel ranks joint 30th of 153 for the warmest December highs and joint 144th of 153 for the driest December (rainfall, lowest first). The mean December high of those 153 cities is 22.7°C; Cozumel 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 falls from 66 mm to 64 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
Cozumel climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 25.3°C23.4°C | 23.4°C | 64 | 11.6 | 11.011 h |
| February | 25.7°C23.8°C | 23.8°C | 28 | 6.9 | 11.511 h |
| March | 26.3°C24.3°C | 24.3°C | 26 | 5.7 | 12.012 h |
| April | 27.3°C25.3°C | 25.3°C | 29 | 5.7 | 12.613 h |
| May | 28.1°C26.1°C | 26.1°C | 84 | 11.1 | 13.113 h |
| June | 28.5°C26.6°C | 26.6°C | 168 | 17.4 | 13.413 h |
| July | 28.9°C27.0°C | 27.0°C | 82 | 14.1 | 13.213 h |
| August | 29.1°C27.0°C | 27.0°C | 107 | 16.2 | 12.813 h |
| September | 28.8°C26.6°C | 26.6°C | 179 | 21.1 | 12.312 h |
| October | 27.9°C25.9°C | 25.9°C | 215 | 19.7 | 11.712 h |
| November | 26.7°C24.9°C | 24.9°C | 103 | 12.9 | 11.211 h |
| December, selected | 25.9°C24.1°C | 24.1°C | 66 | 11.7 | 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 · 20 kmHigh 26.2°C · Low 22.5°C · 54 mm rain
- Cancún in DecemberMexico · 76 kmHigh 25.9°C · Low 23.1°C · 61 mm rain
- Chetumal in DecemberMexico · 262 kmHigh 27.1°C · Low 21.2°C · 55 mm rain
- Kanasín in DecemberMexico · 276 kmHigh 29.2°C · Low 19.6°C · 22 mm rain
- Mérida in DecemberMexico · 284 kmHigh 28.8°C · Low 19.8°C · 22 mm rain
- Campeche in DecemberMexico · 380 kmHigh 28.8°C · Low 21.0°C · 22 mm rain
- Pinar del Río in DecemberCuba · 398 kmHigh 26.7°C · Low 19.1°C · 26 mm rain
- Belmopan in DecemberBelize · 409 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 Cozumel) is explained once on the Cozumel year overview and on the Sources, method and limits page.