December weather forecastSan Jeronimito, Mexico
December
Weather in December
December, the first month of the winter in San Jeronimito, is still a warm month, with an average temperature varying between 28.5°C (83.3°F) and 21.5°C (70.7°F).Temperature
December, recording an average high temperature of 28.5°C (83.3°F) and a low temperature of 21.5°C (70.7°F), is San Jeronimito's coldest month.Heat index
The heat index for December is computed to be a tropical 31°C (87.8°F). If one stays active during extended exposure, it might induce fatigue and result in heat cramps.In the scope of the heat index, its values resonate with shade and light wind conditions. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.
Humidity
The average relative humidity in December in San Jeronimito is 68%.Rainfall
In December, in San Jeronimito, Mexico, the rain falls for 3.6 days. Throughout December, 4mm (0.16") of precipitation is accumulated. In San Jeronimito, during the entire year, the rain falls for 147.5 days and collects up to 615mm (24.21") of precipitation.Daylight
The month with the shortest days in San Jeronimito, Mexico, is December, with an average of 11h and 6min of daylight.On the first day of the month, sunrise is at 7:00 am and sunset at 6:09 pm. On the last day of December, in San Jeronimito, sunrise is at 7:15 am and sunset at 6:21 pm CST.
Sunshine
January through May and December, with an average of 9.9h of sunshine, are months with the most sunshine.UV index
January, February, November and December, with an average maximum UV index of 6, are months with the lowest UV index in San Jeronimito. A UV Index estimate of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for the average person.Note: An average UV index of 6 in December transforms into this advice:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
San Jeronimito, Mexico
- Average high temperature in December: 28.5°C
The warmest month (with the highest average high temperature) is May (30.5°C).
The month with the lowest average high temperature is December (28.5°C).
- Average low temperature in December: 21.5°C
The month with the highest average low temperature is June (23.8°C).
The coldest month (with the lowest average low temperature) is February (20.8°C).
Average pressure in December
San Jeronimito, Mexico
- Average pressure in December: 1012.8mbar
The month with the highest atmospheric pressure is January (1013.4mbar).
The months with the lowest atmospheric pressure are May, June and September (1010.6mbar).
Average wind speed in December
San Jeronimito, Mexico
- Average wind speed in December: 7.2km/h
The windiest months (with the highest average wind speed) are March and September (8km/h).
The calmest month (with the lowest average wind speed) is November (7.1km/h).
Average humidity in December
San Jeronimito, Mexico
- Average humidity in December: 68%
The months with the highest relative humidity are September and October (78%).
The month with the lowest relative humidity is April (58%).
Average rainfall in December
San Jeronimito, Mexico
- Average rainfall in December: 4mm
The wettest month (with the highest rainfall) is September (182mm).
The driest month (with the least rainfall) is April (1mm).
Average rainfall days in December
San Jeronimito, Mexico
- Average rainfall days in December: 3.6 days
The month with the highest number of rainy days is August (26.3 days).
The month with the least rainy days is February (1.6 days).
Average daylight in December /
Average sunshine in December
San Jeronimito, 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: 9h and 54min
The months with the most sunshine are January, February, March, April, May and December (Average sunshine: 9h and 54min).
The month with the least sunshine is August (Average sunshine: 8h and 54min).
Average sunshine days in December
San Jeronimito, Mexico
- Average sunshine days in December: 24.7 days
The month with the most sunshine days is March (28.9 days).
The month with the least sunshine days is September (1.6 days).
Average UV index in December
San Jeronimito, 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
San Jeronimito, Mexico
- Average cloud cover in December: 10
The month with the most cloud cover is September (Cloud cover 35).
The month with the least cloud cover is April (Cloud cover 7).
Average visibility in December
San Jeronimito, 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).
