December weather - Winter 2024

Weather in December
Frequently asked questions
Average temperature in December
Average pressure in December
Average wind speed in December
Average humidity in December
Average rainfall in December
Average rainfall days in December
Average sea temperature in December
Average daylight in December
Average sunshine in December
Average sunshine days in December
Average UV index in December
Average cloud cover in December
Average visibility in December

White sandy beach and the clear blue waters in Cancún, Mexico

Weather in December

Rounding off the year on a comfortably cool note, December affirms the onset of winter in Cancún. A clear decrease in temperatures, as compared to November, along with relatively lower rainfall sums up the weather for this month. As the city readies itself for Christmas festivities, the climate lends itself well to outdoor winter activities. Cancún's prevailing weather in December includes a maximum temperature of 26.9°C (80.4°F), a minimum dipping to 23.5°C (74.3°F), and an accumulated rainfall of 63mm (2.48") over an approximate 20.7 days. Closing out with refreshing weather, Cancún provides the perfect backdrop for New Year celebrations, concluding a year full of diverse weather patterns.

Temperature

The weather during December records an average high-temperature of a still moderately hot 26.9°C (80.4°F), closely mirroring the preceding month. December notes an average low temperature of 23.5°C (74.3°F) in Cancún, subtly down from the daytime highs.

Humidity

The average relative humidity in December is 76%.

Rainfall

In December, the rain falls for 20.7 days. Throughout December, 63mm (2.48") of precipitation is accumulated. Throughout the year, there are 224.7 rainfall days, and 886mm (34.88") of precipitation is accumulated.

Sea temperature

In December, the average sea temperature is 26.5°C (79.7°F).
Note: For activities in the water such as swimming or diving, temperatures from 25°C (77°F) to 29°C (84.2°F) are considered optimal for prolonged enjoyment without discomfort.

Daylight

December has the shortest days of the year, with an average of 10h and 54min of daylight.
On the first day of December, sunrise is at 7:08 am and sunset at 6:04 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 6:16 pm EST.

Sunshine

The average sunshine in December is 8.3h.

UV index

The months with the lowest UV index in Cancún are January, February, November and December, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for the average person.
Note: In December, the maximum UV index of 6 suggests these recommendations:
Implement precautions and maintain sun safety methods. Avoidance of sunburn is demanded. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Be cautious! Sand and water surfaces make the Sun's UV rays more potent.

Updated: Feb 9, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in December in Cancún?

An average high-temperature, in December, in Cancún, is 26.9°C (80.4°F) and the average low-temperature is 23.5°C (74.3°F). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, in November is appraised at 30°C (86°F).

What is the average humidity in December in Cancún?

The average relative humidity in December in Cancún, Mexico, is 76%.

How many days does it rain in December in Cancún?

In Cancún, Mexico, in December, it is raining for 20.7 days, with typically 63mm (2.48") of accumulated precipitation.

What is the sea water temperature in December in Cancún?

In Cancún, the average seawater temperature in December is 26.5°C (79.7°F). For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

What is the month with the shortest days in Cancún?

December has the shortest days of the year in Cancún, Mexico, with an average of 10h and 54min of daylight.

How many hours of daylight does Cancún have in December?

In December, the average day length in Cancún, Mexico, is 10h and 52min.

When are sunrise and sunset in December in Cancún?

In December, on the first day of the month, sunrise is at 7:08 am and sunset at 6:04 pm. On the last day of the month, in Cancún, sunrise is at 7:24 am and sunset at 6:16 pm EST.

How long on average sun shines in December in Cancún?

In December, the average sunshine duration in Cancún, Mexico, is 8.3h.

When is the lowest UV index in Cancún?

January, February, November and December, with an average maximum UV index of 6, are months with the lowest UV index in Cancún, Mexico.

What is the UV index intensity in December in Cancún?

In December, the average daily maximum UV index in Cancún is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

27.5°C 81.5°F

26.9°C 80.4°F

26°C 78.8°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

17.5km/h 10.9mph

17.8km/h 11.1mph

18.5km/h 11.5mph

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

20.8

20.7

19.7

Average sea temperature

Average daylight

Average sunshine

Average sunshine days

4.8

4.6

6.1

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Cancún, Mexico

Average high temperature in December: 26.9°C

The warmest month (with the highest average high temperature) is August (31°C).
The month with the lowest average high temperature is January (26°C).

Average low temperature in December: 23.5°C

The month with the highest average low temperature is August (27°C).
The coldest month (with the lowest average low temperature) is January (22.1°C).

Average pressure in December
Cancún, Mexico

Average pressure in December: 1016.5mbar

The month with the highest atmospheric pressure is January (1017.7mbar).
The month with the lowest atmospheric pressure is September (1012.5mbar).

Average wind speed in December
Cancún, Mexico

Average wind speed in December: 16.8km/h

The windiest month (with the highest average wind speed) is March (18.8km/h).
The calmest month (with the lowest average wind speed) is July (13.1km/h).

Average humidity in December
Cancún, Mexico

Average humidity in December: 76%

The month with the highest relative humidity is June (78%).
The month with the lowest relative humidity is March (73%).

Average rainfall in December
Cancún, Mexico

Average rainfall in December: 63mm

The wettest month (with the highest rainfall) is October (137mm).
The driest month (with the least rainfall) is March (26mm).

Average rainfall days in December
Cancún, Mexico

Average rainfall days in December: 20.7 days

The month with the highest number of rainy days is October (23.3 days).
The month with the least rainy days is April (12.3 days).

Average sea temperature in December
Cancún, Mexico

Average sea temperature in December: 26.5°C

The best month for swimming (with the highest average sea temperature) is August (29.4°C).
The coldest month (with the lowest average sea temperature) is January (25.6°C).

Average daylight in December /
Average sunshine in December
Cancún, Mexico

Average daylight in December: 10h and 5min

The month with the longest days is June (Average daylight: 13h and 24min).
The month with the shortest days is December (Average daylight: 10h and 54min).

Average sunshine in December: 8h and 2min

The months with the most sunshine are July and August (Average sunshine: 9h and 18min).
The month with the least sunshine is January (Average sunshine: 7h and 42min).

Average sunshine days in December
Cancún, Mexico

Average sunshine days in December: 4.6 days

The month with the most sunshine days is April (11.7 days).
The month with the least sunshine days is December (4.6 days).

Average UV index in December
Cancún, Mexico

Average UV index in December: 6

The months with the highest UV index are March, April, May, June, July, August, September and October (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 6).

Average cloud cover in December
Cancún, Mexico

Average cloud cover in December: 36

The month with the most cloud cover is January (Cloud cover 40).
The month with the least cloud cover is July (Cloud cover 23).

Average visibility in December
Cancún, Mexico

Average visibility in December: 10km

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).

December weather forecast
Cancún, Mexico

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