Cancún in December
In December, Cancún averages 28°C (82°F) during the day and 21°C (70°F) at night, with around 9 days of rain (102 mm total).
High seasonConditions are warm and beach-friendly. Occasional showers are likely but won't dominate.
December is a great month to visit Cancún: pleasant temperatures and relatively few wet days.
How December compares to the rest of the year in Cancún
December is one of the coolest months in Cancún (12th of 12) and moderately rainy compared to the rest of the year (5th of 12). Daytime temperature runs 3°C below the annual average (31°C). December runs 1°C cooler than November (29°C) and stays flat into January.
December sunrise & sunset in Cancún
Times shown for Cancún local time (America/Cancun), calculated for the 15th of December. They shift by a few minutes day to day across the month.
Photography light in Cancún — December
Golden-hour and blue-hour windows for the 15th of December, in Cancún's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Cancún in December
Travel writers usually only tell you when to go. Here's when to book flights and lodging for the best mix of price and availability, based on December's tier (High season) and Cancún's popularity.
Crowds & pricing — December in Cancún
This is a busy month in Cancún — not the absolute peak, but tourist numbers are clearly elevated. You'll feel it at headline attractions on weekends and in the historic centre, though side streets and lesser-known sights stay manageable. Prices are above off-season but not at their summit. A good week for first-time visitors who want everything open without the worst of the crush.
Why this tier: comfortable tourism weather Christmas / New Year travel surge
Sun & mosquito risk — December in Cancún
UV is a clear-sky sea-level estimate — clouds, altitude, and reflective surfaces (snow, water) shift it ±30%. Mosquito risk is climate-derived only; for current disease advisories (dengue, malaria, zika) check the CDC or WHO travel pages before your trip.
Sea temperature in Cancún — December
Across the year Cancún's sea swings from 26.7°C (February) to 29.5°C (September) — December sits at 27.5°C.
Cancún in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 28°C / 82°F | 20°C / 68°F | 89 mm | 8 | — |
| February | 29°C / 84°F | 20°C / 68°F | 56 mm | 6 | — |
| March | 30°C / 86°F | 22°C / 72°F | 41 mm | 4 | — |
| April | 32°C / 90°F | 23°C / 73°F | 39 mm | 4 | — |
| May | 33°C / 91°F | 25°C / 77°F | 109 mm | 7 | — |
| June | 33°C / 91°F | 26°C / 79°F | 165 mm | 9 | — |
| July | 34°C / 93°F | 26°C / 79°F | 89 mm | 8 | — |
| August | 34°C / 93°F | 26°C / 79°F | 116 mm | 9 | — |
| September | 33°C / 91°F | 25°C / 77°F | 218 mm | 13 | — |
| October | 31°C / 88°F | 24°C / 75°F | 196 mm | 11 | — |
| November | 29°C / 84°F | 22°C / 72°F | 102 mm | 8 | — |
| December | 28°C / 82°F | 21°C / 70°F | 102 mm | 9 | — |
Other cities with similar December weather
🌍 See the full ranked list of climate twins for Cancún in December →
Frequently asked questions
How hot is Cancún in December?
In December, Cancún averages a high of 28°C (82°F) and a low of 21°C (70°F) — generally warm.
Does it rain a lot in Cancún in December?
December sees occasional rain in Cancún, with about 9 rainy days on average.
Is December a good time to visit Cancún?
December is warm. It suits travelers who are comfortable with warm weather; check the month-by-month ranking to compare it against the rest of the year.
What should I pack for Cancún in December?
Pack lightweight, breathable clothing, sunglasses and sunscreen. See the full December packing list for Cancún for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.