December weather forecastOstuacán, Mexico
December
Weather in December
The first month of the winter, December, is still a warm month in Ostuacán, Mexico, with an average temperature varying between 18.5°C (65.3°F) and 27°C (80.6°F).Temperature
The shift into December records an average high-temperature of a still warm 27°C (80.6°F), subtly varied from November's 27.7°C (81.9°F). Ostuacán experiences a mean temperature of 18.5°C (65.3°F) during December nights.Heat index
The heat index for December is estimated at a hot 31°C (87.8°F). Exposure and extended activity could potentially cause a state of fatigue and lead to heat cramps.Metrics for the heat index primarily focus on shaded spots and light wind conditions. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a single figure representing how weather conditions feel when combining temperature and humidity. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. Should you be directly under the sun, anticipate a possible increase in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
Humidity
January, November and December, with an average relative humidity of 88%, are the most humid months in Ostuacán.Rainfall
In Ostuacán, in December, during 15.9 rainfall days, 81mm (3.19") of precipitation is typically accumulated. Throughout the year, in Ostuacán, there are 217.5 rainfall days, and 1264mm (49.76") of precipitation is accumulated.Daylight
December has the shortest days of the year in Ostuacán, with an average of 11h and 6min of daylight.On the first day of December in Ostuacán, sunrise is at 6:27 am and sunset at 5:37 pm. On the last day of the month, sunrise is at 6:43 am and sunset at 5:49 pm CST.
Sunshine
The month with the least sunshine is December, with an average of 5.1h of sunshine.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum UV index of 5 during December leads to these instructions:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Ostuacán, Mexico
- Average high temperature in December: 27°C
The warmest month (with the highest average high temperature) is May (36.5°C).
The month with the lowest average high temperature is January (26.1°C).
- Average low temperature in December: 18.5°C
The month with the highest average low temperature is May (24°C).
The coldest month (with the lowest average low temperature) is January (17.4°C).
Average pressure in December
Ostuacán, Mexico
- Average pressure in December: 1015.6mbar
The month with the highest atmospheric pressure is January (1017mbar).
The month with the lowest atmospheric pressure is May (1010.8mbar).
Average wind speed in December
Ostuacán, Mexico
- Average wind speed in December: 5.7km/h
The windiest months (with the highest average wind speed) are April and May (6.5km/h).
The calmest month (with the lowest average wind speed) is September (5.3km/h).
Average humidity in December
Ostuacán, Mexico
- Average humidity in December: 88%
The months with the highest relative humidity are January, November and December (88%).
The month with the lowest relative humidity is May (67%).
Average rainfall in December
Ostuacán, Mexico
- Average rainfall in December: 81mm
The wettest month (with the highest rainfall) is October (212mm).
The driest month (with the least rainfall) is April (34mm).
Average rainfall days in December
Ostuacán, Mexico
- Average rainfall days in December: 15.9 days
The month with the highest number of rainy days is September (25.5 days).
The month with the least rainy days is April (11.2 days).
Average daylight in December /
Average sunshine in December
Ostuacán, Mexico
- Average daylight in December: 11h and 6min
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 6min).
- Average sunshine in December: 5h and 6min
The month with the most sunshine is May (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).
Average sunshine days in December
Ostuacán, Mexico
- Average sunshine days in December: 13.4 days
The month with the most sunshine days is March (17.8 days).
The month with the least sunshine days is September (3.9 days).
Average UV index in December
Ostuacán, Mexico
- Average UV index in December: 5
The months with the highest UV index are March, April, May, June and July (UV index 7).
The months with the lowest UV index are January and December (UV index 5).
Average cloud cover in December
Ostuacán, Mexico
- Average cloud cover in December: 61
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is April (Cloud cover 30).
Average visibility in December
Ostuacán, Mexico
- Average visibility in December: 6km
The months with the highest visibility are April and May (9km).
The months with the lowest visibility are January, October, November and December (6km).
