What to expect in Cancún in December
December is one of the best times to visit Cancún. Expect 28° / 20°, the biggest crowds of the year and premium prices.
Cancún weather in December
Typical conditions in Cancún during December, based on long-run climate normals rather than any single year. Treat it as a planning guide, not a forecast.
| Average high | 28°C 82°F |
|---|---|
| Average low | 20°C 68°F |
| Rainfall | Dry 20/100 |
| Total rainfall | 96 mm3.8 in |
| Rainy days | 11 |
| Sea temperature | 27°C 81°F |
| Daylight | 10 h 52 min |
| How it feels | Warm and comfortable |
Average highs sit around 28°C with lows near 20°C. It is one of the drier months — pack light.
Crowds & demand
Crowd levels are High for Cancún — the biggest crowds of the year.
Prices & value
This month counts as high season: premium prices.
What to pack
Light layers for 28°C days and something with sleeves for evenings, which cool to around 20°C. Rain gear is largely optional this month, which keeps your bag light.
What it costs
This is peak pricing for Cancún. Expect to pay a premium on flights and accommodation, and to book considerably further ahead than usual. Compared with the most expensive month of the year, you are looking at roughly 17% less.
Who this month suits
- Travellers who want the most reliable weather
- Families tied to school holidays
Events & what’s on
No major festivals fall in December, so the destination feels like its everyday self.
Cancún in December compared with nearby months
If your dates are flexible by a few weeks, this is what shifting them actually buys you.
| Month | Temp | Crowds | Price | Score |
|---|---|---|---|---|
| October | 31° / 23° | Moderate | $ | 60 |
| November | 29° / 21° | Moderate | $$ | 58 |
| December · This month | 28° / 20° | High | $$$ | 50 |
| January | 28° / 20° | High | $$$ | 48 |
| February | 29° / 20° | High | $$$ | 47 |
These months score higher for Cancún on the same blend of weather, crowds and price. Same destination, better odds.
Or go somewhere else in December
If the destination is negotiable but the month is not, these places are at their best in December.
Figures are climate normals and modelled estimates — a planning guide, not a forecast. We separate fact, estimate and recommendation. Updated October 2026
