Cancún weather in December
December in Cancún: hot, a little rain, with clean air — an excellent time to visit.
#9 of 12 months in Cancún · #124 of 604 destinations to visit in December · comfort 82/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Cancún climate normals — December
| Daytime high | 27°C / 80°F | 🥵 hot |
|---|---|---|
| Nighttime low | 24°C / 74°F | |
| Feels like (high) | 29°C / 84°F | |
| Rainfall | 69 mm / 2.7 in | 🌦 some rain |
| Rainy days | 12 days | |
| Humidity | 74% | 💧 humid |
| Dew point | 20°C / 68°F | |
| Sunshine | 9.2 h/day | |
| Daylight | 10.9 h | |
| Wind | 18 km/h / 11 mph | |
| Air quality (US AQI) | 42 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Cancún in December — FAQ
- Is December a good time to visit Cancún?
- December in Cancún: hot, a little rain, with clean air — an excellent time to visit. It ranks #9 of 12 months for Cancún on SeasonMap's comfort score (82/100).
- What is the weather like in Cancún in December?
- In December, Cancún averages a daily high of 26.5°C and a low of 23.6°C, with about 68.8 mm of rain over roughly 11.6 rainy days.
- What is the air quality in Cancún in December?
- Cancún has a mean US Air Quality Index of about 42 in December.