December weather forecastCancún, Mexico
December
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.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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 54min
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 18min
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).
