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Cozumel Weather in December
December in Cozumel typically sees daytime highs of 27°C (81°F) and nighttime lows of 24°C (75°F). Rainfall is also possible this month, so it's worth packing an umbrella.
Rainfall in Cozumel in December
You can expect rain on roughly 8 days based on historical data, averaging 77 mm (3 in) for the month. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.
Temperature in Cozumel in December
December tends to be one of the excellent months in Cozumel, with 27°C (81°F) in the afternoon and 24°C (75°F) overnight. Conditions stay fairly consistent through the month, making it easier to plan what to wear. With overnight lows of 24°C (75°F), evenings and nights remain warm. Light clothing and an open window or fan can help you sleep comfortably.
Sunshine in Cozumel in December
The days are predominantly sunny, with an estimated total of around 211 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
With water at 27°C (81°F), you can expect warm, pleasant conditions for any water activity. There's no adjustment period, it feels comfortable straight away.If you're inclined towards comfortable temperatures and drier conditions, December is a good time to visit Cozumel.
Cozumel Temperature in December
Min Temperature
24°C (75°F)
Max Temperature
27°C (81°F)
Water Temperature
27°C (81°F) *
Chance of Rain
28%
Precipitation
77 mm (3 in)
Rainy days
8 days
Sunshine
211 hours *
Percentage Sunshine
*
* Data from: Playa del Carmen, Mexico (18 KM, 11 Miles).
Cozumel Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Cozumel - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Cozumel 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 Cozumel in December
Browse day-by-day weather records for Cozumel spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Cozumel historical weather extremes in December
Our historical data for Cozumel spans 1976 to 2025, revealing these weather extremes.
- The hottest December day on record in Cozumel reached 33°C (91°F) (December 6, 2013).
- On December 24, 1989, Cozumel saw its coldest December day with temperatures maxing out at 17°C (63°F).
- Nighttime temperatures dropped to 9°C (48°F) on December 28, 1999, marking the coldest December night on record.
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 Cozumel in December
Warm but pleasant conditions in Cozumel in December. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. Wet weather is likely, so pack waterproof gear for multiple rainy days. Expect water temperatures of around 27°C (81°F), which is ideal for taking a refreshing dip. Bring swimwear and consider packing a towel for drying off. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.
What To Do in Cozumel in December
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming9/10 -
Cycling7/10 -
Walking7/10 -
Camping8/10 -
Outdoor sports7/10
Cozumel 3-Day Forecast
More climate data for Cozumel
Temperature Rainfall Sunshine Water Temp
See the full Cozumel 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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