December weather forecastChetumal, Mexico
December
Weather in December
December, the first month of the winter in Chetumal, is also a moderately hot month, with an average temperature varying between 28°C (82.4°F) and 21°C (69.8°F).Temperature
December registers an average high-temperature of a still moderately hot 28°C (82.4°F), slightly varied from November's 29°C (84.2°F). Throughout December, the average low-temperature records at a pleasant 21°C (69.8°F).Heat index
The heat index value during December is computed to be a hot 32°C (89.6°F). If one continues to be active during enduring exposure, it could result in fatigue and heat cramps.When referencing the heat index, its values are suitable for shady environments and light breezes. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. An individual's perception of weather can be affected by a variety of elements including metabolic differences, being pregnant, and their level of physical exertion. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to their vulnerability.
Humidity
October and December, with an average relative humidity of 82%, are the most humid months in Chetumal.Rainfall
In Chetumal, in December, it is raining for 13.1 days, with typically 34mm (1.34") of accumulated precipitation. In Chetumal, during the entire year, the rain falls for 198.4 days and collects up to 752mm (29.61") of precipitation.Sea temperature
In Chetumal, Mexico, the average seawater temperature in December is 26.9°C (80.4°F).Note: Swimming, diving, and other water endeavors at temperatures between 25°C (77°F) and 29°C (84.2°F) are considered enjoyable and satisfying for extended periods without discomfort.
Daylight
With an average of 11h and 0min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:09 am and sunset at 6:15 pm. On the last day of December, sunrise is at 7:25 am and sunset at 6:27 pm EST.
Sunshine
In Chetumal, Mexico, the average sunshine in December is 8.2h.UV index
January, February, August, October through December, with an average maximum UV index of 6, are months with the lowest UV index in Chetumal. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for the ordinary person.Note: The daily high UV index of 6 during December translates into the following recommendations:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Alert! The Sun's UV rays are heightened by the reflection of sand and water.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Chetumal, Mexico
- Average high temperature in December: 28°C
The warmest months (with the highest average high temperature) are May and August (31.8°C).
The month with the lowest average high temperature is January (27.3°C).
- Average low temperature in December: 21°C
The month with the highest average low temperature is June (25.1°C).
The coldest month (with the lowest average low temperature) is January (19.8°C).
Average pressure in December
Chetumal, Mexico
- Average pressure in December: 1015.1mbar
The month with the highest atmospheric pressure is January (1016.3mbar).
The month with the lowest atmospheric pressure is September (1011.1mbar).
Average wind speed in December
Chetumal, Mexico
- Average wind speed in December: 8.5km/h
The windiest month (with the highest average wind speed) is April (10.4km/h).
The calmest month (with the lowest average wind speed) is October (7.8km/h).
Average humidity in December
Chetumal, Mexico
- Average humidity in December: 82%
The months with the highest relative humidity are October and December (82%).
The month with the lowest relative humidity is March (74%).
Average rainfall in December
Chetumal, Mexico
- Average rainfall in December: 34mm
The wettest month (with the highest rainfall) is June (124mm).
The driest month (with the least rainfall) is March (17mm).
Average rainfall days in December
Chetumal, Mexico
- Average rainfall days in December: 13.1 days
The month with the highest number of rainy days is September (23.1 days).
The month with the least rainy days is April (10.1 days).
Average sea temperature in December
Chetumal, Mexico
- Average sea temperature in December: 26.9°C
The best month for swimming (with the highest average sea temperature) is September (29.7°C).
The coldest month (with the lowest average sea temperature) is January (26.2°C).
Average daylight in December /
Average sunshine in December
Chetumal, Mexico
- Average daylight in December: 11h and 0min
The month with the longest days is June (Average daylight: 13h and 12min).
The month with the shortest days is December (Average daylight: 11h and 0min).
- Average sunshine in December: 8h and 12min
The month with the most sunshine is April (Average sunshine: 8h and 54min).
The month with the least sunshine is June (Average sunshine: 7h and 36min).
Average sunshine days in December
Chetumal, Mexico
- Average sunshine days in December: 15.6 days
The month with the most sunshine days is April (17.8 days).
The month with the least sunshine days is June (4.8 days).
Average UV index in December
Chetumal, Mexico
- Average UV index in December: 6
The months with the highest UV index are March, April, May, June, July and September (UV index 7).
The months with the lowest UV index are January, February, August, October, November and December (UV index 6).
Average cloud cover in December
Chetumal, Mexico
- Average cloud cover in December: 39
The month with the most cloud cover is June (Cloud cover 48).
The month with the least cloud cover is April (Cloud cover 35).
Average visibility in December
Chetumal, Mexico
- Average visibility in December: 9km
The months with the highest visibility are March and April (10km).
The months with the lowest visibility are October and November (8km).
