Mexico
Cancún in December: weather, sea & travel advice
This month's data profile
Rain shapes the decision
Cancún in December is climatically well suited to beach holidays, family holidays and city breaks. The average daily high is around 27 °C, and the sea is about 27 °C. With about 11 rainy days it is wet.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
77/100 · #5
Warmth
#11
Dryness
#6
Sun
#12
Sea warmth
#8
Published best categories: none
Cancún · DecemberPhoto: Luka Peternel · CC BY-SA 4.0Climate facts
- Average high
- 27 °C
- Average low
- 23 °C
- Sea
- 27 °C
- Rainy days (est.)
- 11 rainy days (est.)
- Sun (est.)
- 5 h/day
- Humidity
- 78 %
For your trip planning
December: drier than November, a little warmer than January
In our December series, Cancún gets clearly less precipitation than in November, while average highs and lows sit slightly above January. January brings similar rainfall and the same estimated rainy-day count. The sea stays warm in December, so swimming is plausible, with a little less heat than in November.
Climate evidence with direct month comparison
The highlighted row is the selected month. Precipitation total and rainy days are separate monthly averages.
| Month | Avg high °C | Avg low °C | Rainy days (est.) | Precipitation mm | Sun h/day (est.) | Humidity % | Wind m/s | Sea °C | Score |
|---|---|---|---|---|---|---|---|---|---|
| November | 28 | 24 | 14 | 117 | 5.1 | 79 | 2.5 | 28 | 69 |
| December (selected) | 27 | 23 | 11 | 76 | 4.7 | 78 | 2.5 | 27 | 77 |
| January | 26 | 22 | 11 | 79 | 4.9 | 77 | 2.5 | 27 | 79 |
How do the previous and next months compare?
Baseline: December (77/100)
Positive and negative values show the change from the selected month.
| Score Δ | Average high Δ | Average low Δ | Rainy days Δ | Rain Δ | Sun Δ | Humidity Δ | Wind Δ | Sea Δ | |
|---|---|---|---|---|---|---|---|---|---|
| November | -8 | +0.7 °C | +1 °C | +2.9 | +40.7 mm | +0.4 h | +1.1 % | ±0 m/s | +0.8 °C |
| January | +2 | -0.4 °C | -0.8 °C | -0.3 | +2.7 mm | +0.2 h | -1.5 % | +0.1 m/s | -0.6 °C |
All twelve months in context
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Useful next decisions
Frequently asked questions
How warm is Cancún in December?
The average daily high is around 27 °C, with an average daily low of about 23 °C.
Can you swim in Cancún in December?
The sea is about 27 °C (very warm).
Does it rain a lot in Cancún in December?
The curated estimate is about 11 rainy days per month, not a directly measured long-term average. Total precipitation averages around 76 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit Cancún?
By the climate score, January, February, March and April are the strongest months for Cancún. For a beach trip: January, February, March and April. December is not among them.