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Cancún Weather in December
December in Cancún sees daytime temperatures around 27°C (81°F) and lows of 24°C (75°F) at night. With around 70 mm (2.8 in) of rainfall expected, it's worth packing a rain jacket.
Rainfall in Cancún in December
Typically around 6 days of rainfall are expected, averaging 70 mm (2.8 in) for the month. Showers tend to be short but heavy rather than persistent drizzle. When it rains, it usually means it, but it doesn't last long.
Temperature in Cancún in December
Cancún has excellent weather in December, with days reaching 27°C (81°F) and nights cooling to 24°C (75°F). The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. Nights stay warm at around 24°C (75°F), so light bedding and good ventilation are worth thinking about.
Sunshine in Cancún in December
The days are predominantly sunny, with an estimated total of around 217 hours of sunshine. These sun-filled days are perfect for playing sports, visiting parks, or going for a bike ride.
Average water temperature in December
At 27°C (81°F), the water is warm and comfortable for swimming. Most people find this temperature ideal for spending longer periods in the water.If you're inclined towards comfortable temperatures and drier conditions, December is a good time to visit Cancún.
Cancún Temperature in December
Min Temperature
24°C (75°F)
Max Temperature
27°C (81°F)
Water Temperature
27°C (81°F)
Chance of Rain
21%
Precipitation
70 mm (2.8 in)
Rainy days
6 days
Sunshine
217 hours
Percentage Sunshine
Cancún Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Cancún - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Cancún typically stay consistent throughout December, with daily highs averaging around 27°C (81°F). Nights are warm, with lows typically ranging from 19°C (66°F) to 22°C (72°F).
Average temperatures in December
Historical weather records for Cancún in December
Browse day-by-day weather records for Cancún spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Cancún historical weather extremes in December
The extremes listed below come from historical weather data collected in Cancún from 1976 through 2025.
- The warmest day in December was on December 5, 2004, with a maximum of 34°C (93°F).
- On December 24, 1989, Cancún saw its coldest December day with temperatures maxing out at 17°C (63°F).
- Cancún registered its coldest December night on December 28, 1999, with temperatures dropping to 9°C (48°F).
Best Places in Mexico in December
Find out more about the weather in Mexico and which places have the best travel conditions in this month. See all of Mexico in December →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Cancún in December
Warm temperatures in December make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Rain gear is recommended, you can expect wet weather on multiple days. With water temperatures around 27°C (81°F), swimming conditions are excellent. Pack your swimsuit, goggles, and maybe some water shoes. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.
What To Do in Cancún in December
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming9/10 -
Cycling8/10 -
Walking8/10 -
Camping8/10 -
Outdoor sports8/10
Cancún 3-Day Forecast
More climate data for Cancún
Temperature Rainfall Sunshine Water Temp
See the full Cancún climate overview or explore weather in Mexico.
Popular in December
Where to go in December - average daytime high across popular destinations.
Tulum
28°C (82°F) Cancún27°C (81°F) Playa del Carmen28°C (82°F) Puerto Vallarta
27°C (81°F) Los Cabos27°C (81°F) Mexico City21°C (70°F) Puerto Peñasco21°C (70°F) Bucket list
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