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
December
Weather in December
Temperature
With the onset of December, the average high-temperature registers at a still moderately hot 29.5°C (85.1°F), subtly different from November's 29.3°C (84.7°F). In the month of December, the temperature generally rests at an average low of 17.6°C (63.7°F).Heat index
The heat index value for December is calculated to be a hot 32°C (89.6°F). Prolonged activity during exposure might result in a state of fatigue and cause heat cramps.It is crucial to understand that heat index figures are for shade and gentle wind conditions. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. Awareness is key; direct sunlight can enhance the weather's impact, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. 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
In San Francisco Zapotitlán, the average relative humidity in December is 63%.Rainfall
In San Francisco Zapotitlán, in December, during 7.6 rainfall days, 17mm (0.67") of precipitation is typically accumulated. Throughout the year, there are 223.1 rainfall days, and 1539mm (60.59") of precipitation is accumulated.Daylight
December has the shortest days of the year, with an average of 11h and 18min of daylight.On the first day of December in San Francisco Zapotitlán, sunrise is at 06:15 and sunset at 17:35. On the last day of the month, sunrise is at 06:30 and sunset at 17:47 CST.
Sunshine
In San Francisco Zapotitlán, the average sunshine in December is 7.5h.UV index
January through December, with an average maximum UV index of 6, are months with the highest UV index in San Francisco Zapotitlán. The months with the lowest UV index in San Francisco Zapotitlán, Guatemala, are January through December, with an average maximum UV index of 6. 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: In December, a regular UV index of 6 translates into these guidelines:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot in San Francisco Zapotitlán during December?
What is the average humidity in December in San Francisco Zapotitlán?
How much does it rain in San Francisco Zapotitlán in December?
What is the month with the shortest days in San Francisco Zapotitlán?
What is the average length of the day in December in San Francisco Zapotitlán?
When is the sunrise / sunset in December in San Francisco Zapotitlán?
How long on average sun shines in December in San Francisco Zapotitlán?
What are the months with the highest UV index in San Francisco Zapotitlán?
What is the month with the lowest UV index in San Francisco Zapotitlán?
What is the UV index intensity in December in San Francisco Zapotitlán?
Average temperature in December
San Francisco Zapotitlán, Guatemala
- Average high temperature in December: 29.5°C
The warmest month (with the highest average high temperature) is March (31.5°C).
The month with the lowest average high temperature is September (28.5°C).
- Average low temperature in December: 17.6°C
The month with the highest average low temperature is May (20.5°C).
The coldest month (with the lowest average low temperature) is December (17.6°C).
Average pressure in December
San Francisco Zapotitlán, Guatemala
- Average pressure in December: 1013.9mbar
The month with the highest atmospheric pressure is January (1014.5mbar).
The month with the lowest atmospheric pressure is October (1012.2mbar).
Average wind speed in December
San Francisco Zapotitlán, Guatemala
- Average wind speed in December: 6.4km/h
The windiest month (with the highest average wind speed) is March (6.6km/h).
The calmest month (with the lowest average wind speed) is May (5.1km/h).
Average humidity in December
San Francisco Zapotitlán, Guatemala
- Average humidity in December: 63%
The month with the highest relative humidity is September (80%).
The months with the lowest relative humidity are January, February and March (59%).
Average rainfall in December
San Francisco Zapotitlán, Guatemala
- Average rainfall in December: 17mm
The wettest month (with the highest rainfall) is May (274mm).
The driest months (with the least rainfall) are January and February (7mm).
Average rainfall days in December
San Francisco Zapotitlán, Guatemala
- Average rainfall days in December: 7.6 days
The month with the highest number of rainy days is September (27.8 days).
The month with the least rainy days is January (4.8 days).
Average daylight in December /
Average sunshine in December
San Francisco Zapotitlán, Guatemala
- Average daylight in December: 11h and 2min
The month with the longest days is June (Average daylight: 13h and 0min).
The month with the shortest days is December (Average daylight: 11h and 18min).
- Average sunshine in December: 7h and 3min
The months with the most sunshine are April and July (Average sunshine: 11h and 12min).
The month with the least sunshine is November (Average sunshine: 7h and 24min).
Average sunshine days in December
San Francisco Zapotitlán, Guatemala
- Average sunshine days in December: 21.5 days
The month with the most sunshine days is January (24.4 days).
The month with the least sunshine days is September (1.3 days).
Average UV index in December
San Francisco Zapotitlán, Guatemala
- Average UV index in December: 6
The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 6).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 6).
Average cloud cover in December
San Francisco Zapotitlán, Guatemala
- Average cloud cover in December: 13
The month with the most cloud cover is September (Cloud cover 39).
The month with the least cloud cover is January (Cloud cover 12).
Average visibility in December
San Francisco Zapotitlán, Guatemala
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, April and December (10km).
The months with the lowest visibility are May, June, July, August, September, October and November (9km).
