December weather forecastSan Jerónimo Coatlán, Mexico
December
Weather in December
December, the first month of the winter in San Jerónimo Coatlán, is still a warm month, with an average temperature fluctuating between 29°C (84.2°F) and 21°C (69.8°F).Temperature
San Jerónimo Coatlán's transition from November to December introduces an average high-temperature of a still warm 29°C (84.2°F), marking an insignificant variation from the 29.4°C (84.9°F). San Jerónimo Coatlán's nighttime temperature during December is consistently averaged at a pleasant 21°C (69.8°F).Heat index
Throughout December, the heat index is computed to be a tropical 32°C (89.6°F). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.Understand that the heat index values take into account shaded locations and mild winds. Heat index values might soar by up to 15 Fahrenheit (8 Celsius) degrees with exposure to direct sunshine.
Note: The heat index, also known as 'real feel' or 'apparent temperature', shows a temperature sensation when both heat and moisture conditions are combined. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
Humidity
In December, the average relative humidity is 67%.Rainfall
The month with the least rainfall is December, when the rain falls for 3.2 days and typically collects 2mm (0.08") of precipitation.Daylight
December has the shortest days of the year in San Jerónimo Coatlán, with an average of 11h and 12min of daylight.On the first day of December in San Jerónimo Coatlán, sunrise is at 6:39 am and sunset at 5:53 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 6:06 pm CST.
Sunshine
In December, the average sunshine in San Jerónimo Coatlán is 8.7h.UV index
January, August, October through December, with an average maximum UV index of 6, are months with the lowest UV index in San Jerónimo Coatlán. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: In December, a daily maximum UV index of 6 leads to the following instructions:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
San Jerónimo Coatlán, Mexico
- Average high temperature in December: 29°C
The warmest month (with the highest average high temperature) is May (30.9°C).
The month with the lowest average high temperature is January (28.9°C).
- Average low temperature in December: 21°C
The month with the highest average low temperature is May (24.6°C).
The coldest months (with the lowest average low temperature) are January and December (21°C).
Average pressure in December
San Jerónimo Coatlán, Mexico
- Average pressure in December: 1013.6mbar
The month with the highest atmospheric pressure is January (1014.2mbar).
The month with the lowest atmospheric pressure is May (1011.5mbar).
Average wind speed in December
San Jerónimo Coatlán, Mexico
- Average wind speed in December: 7.2km/h
The windiest month (with the highest average wind speed) is April (8.9km/h).
The calmest month (with the lowest average wind speed) is November (7.1km/h).
Average humidity in December
San Jerónimo Coatlán, Mexico
- Average humidity in December: 67%
The month with the highest relative humidity is September (79%).
The month with the lowest relative humidity is March (63%).
Average rainfall in December
San Jerónimo Coatlán, Mexico
- Average rainfall in December: 2mm
The wettest month (with the highest rainfall) is September (160mm).
The driest month (with the least rainfall) is December (2mm).
Average rainfall days in December
San Jerónimo Coatlán, Mexico
- Average rainfall days in December: 3.2 days
The month with the highest number of rainy days is September (27.5 days).
The months with the least rainy days are January and February (3.1 days).
Average daylight in December /
Average sunshine in December
San Jerónimo Coatlán, Mexico
- Average daylight in December: 11h and 12min
The month with the longest days is June (Average daylight: 13h and 6min).
The month with the shortest days is December (Average daylight: 11h and 12min).
- Average sunshine in December: 8h and 42min
The month with the most sunshine is May (Average sunshine: 10h and 48min).
The month with the least sunshine is November (Average sunshine: 7h and 36min).
Average sunshine days in December
San Jerónimo Coatlán, Mexico
- Average sunshine days in December: 26 days
The month with the most sunshine days is December (26 days).
The month with the least sunshine days is September (0.9 days).
Average UV index in December
San Jerónimo Coatlán, Mexico
- Average UV index in December: 6
The months with the highest UV index are February, March, April, May, June, July and September (UV index 7).
The months with the lowest UV index are January, August, October, November and December (UV index 6).
Average cloud cover in December
San Jerónimo Coatlán, Mexico
- Average cloud cover in December: 9
The month with the most cloud cover is September (Cloud cover 37).
The months with the least cloud cover are February and December (Cloud cover 9).
Average visibility in December
San Jerónimo Coatlán, 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).
