Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
The onset of December brings with it an average high-temperature of a still moderately hot 29°C (84.2°F), showing a negligible variation from the month before. December brings an average low-temperature of 21°C (69.8°F) to Santiago Llano Grande.Heat index
December's mean heat index is estimated at a hot 32°C (89.6°F). Uninterrupted activity during exposure could lead to a sense of exhaustion, possibly causing heat cramps.Factoring in the heat index, values are geared towards shaded areas with light breezes. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', shows a temperature sensation when both heat and moisture conditions are combined. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. With direct sunlight, be aware that it might enhance the heat sensation, raising the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.
Humidity
In Santiago Llano Grande, the average relative humidity in December is 67%.Rainfall
The month with the least rainfall in Santiago Llano Grande 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 Santiago Llano Grande, with an average of 11h and 12min of daylight.On the first day of the month, sunrise is at 6:46 am and sunset at 5:58 pm. On the last day of December, in Santiago Llano Grande, Mexico, sunrise is at 7:01 am and sunset at 6:11 pm CST.
Sunshine
The average sunshine in December is 8.7h.UV index
The months with the lowest UV index are January, August, October through December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the ordinary person.Note: A daily high UV index of 6 in December leads to these guidelines:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. 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. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Frequently asked questions
How hot is December in Santiago Llano Grande?
What is the average humidity in December in Santiago Llano Grande?
What is the driest month in Santiago Llano Grande?
How much does it rain in Santiago Llano Grande in December?
What is the month with the shortest days in Santiago Llano Grande?
How many hours of daylight does Santiago Llano Grande have in December?
When are sunrise and sunset in December in Santiago Llano Grande?
How many hours of sunshine does Santiago Llano Grande have in December?
When is the lowest UV index in Santiago Llano Grande?
How high is the UV index in December in Santiago Llano Grande?
Average temperature in December
Santiago Llano Grande, 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
Santiago Llano Grande, 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
Santiago Llano Grande, 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
Santiago Llano Grande, 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
Santiago Llano Grande, 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
Santiago Llano Grande, 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
Santiago Llano Grande, Mexico
- Average daylight in December: 11h and 1min
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 4min
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
Santiago Llano Grande, 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
Santiago Llano Grande, 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
Santiago Llano Grande, 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
Santiago Llano Grande, 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).
Santiago Llano Grande, Mexico
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