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
San Juan La Laguna experiences an average high-temperature of a still warm 29.5°C (85.1°F) in December, subtly different from November's 29.3°C (84.7°F). Throughout the month of December, San Juan La Laguna witnesses an average low-temperature of 17.6°C (63.7°F).Heat index
In December, the average heat index is estimated at a hot 32°C (89.6°F). If one stays active during extended exposure, it might induce fatigue and result in heat cramps.Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.
Humidity
The average relative humidity in December in San Juan La Laguna is 63%.Rainfall
In San Juan La Laguna, in December, during 7.6 rainfall days, 17mm (0.67") of precipitation is typically accumulated. Throughout the year, in San Juan La Laguna, there are 222.8 rainfall days, and 1491mm (58.7") of precipitation is accumulated.Daylight
With an average of 11h and 18min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 06:14 and sunset at 17:34. On the last day of the month, sunrise is at 06:30 and sunset at 17:46 CST.
Sunshine
In December, the average sunshine is 7.5h.UV index
The months with the highest UV index are January through December, with an average maximum UV index of 6. The months with the lowest UV index in San Juan La Laguna are January through December, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for the average person.Note: The maximum UV index, 6 during December, leads to the following recommendations:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot in San Juan La Laguna during December?
What is the average humidity in December in San Juan La Laguna?
How many days does it rain in December in San Juan La Laguna?
What is the month with the shortest days in San Juan La Laguna?
What is the average length of the day in December in San Juan La Laguna?
When are sunrise and sunset in December in San Juan La Laguna?
How long on average sun shines in December in San Juan La Laguna?
What are the months with the highest UV index in San Juan La Laguna?
What are the months with the lowest UV index in San Juan La Laguna?
What is the UV index reading in December in San Juan La Laguna?
Average temperature in December
San Juan La Laguna, 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 Juan La Laguna, 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 Juan La Laguna, 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 Juan La Laguna, Guatemala
- Average humidity in December: 63%
The months with the highest relative humidity are September and October (79%).
The months with the lowest relative humidity are January, February and March (59%).
Average rainfall in December
San Juan La Laguna, 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 Juan La Laguna, Guatemala
- Average rainfall days in December: 7.6 days
The month with the highest number of rainy days is September (27.5 days).
The month with the least rainy days is January (4.8 days).
Average daylight in December /
Average sunshine in December
San Juan La Laguna, 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 Juan La Laguna, 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 (1.5 days).
Average UV index in December
San Juan La Laguna, 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 Juan La Laguna, Guatemala
- Average cloud cover in December: 13
The month with the most cloud cover is June (Cloud cover 38).
The month with the least cloud cover is January (Cloud cover 12).
Average visibility in December
San Juan La Laguna, 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).
San Juan La Laguna, Guatemala
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