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
A minimal variation is noted in San Juan Bautista's average high-temperature at the onset of December, reaching a still warm 29.5°C (85.1°F) from November's 29.3°C (84.7°F). San Juan Bautista reports an average low-temperature of 17.6°C (63.7°F) during the nights of December.Heat index
December's mean heat index is evaluated at a tropical 32°C (89.6°F). Enduring exposure and ongoing activity could cause a sense of fatigue and subsequent heat cramps.One should consider that heat index numbers are for shaded settings and light wind. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', gives an indication of how one might feel in terms of heat after considering humidity. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. Direct exposure to sun rays can potentially augment the heat sensation, elevating the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital 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
In December, the average relative humidity in San Juan Bautista, Guatemala, is 63%.Rainfall
In San Juan Bautista, in December, it is raining for 7.6 days, with typically 17mm (0.67") of accumulated precipitation. In San Juan Bautista, during the entire year, the rain falls for 222.8 days and collects up to 1491mm (58.7") of precipitation.Daylight
December has the shortest days of the year, with an average of 11h and 18min of daylight.On the first day of the month, sunrise is at 06:14 and sunset at 17:34. On the last day of December, in San Juan Bautista, sunrise is at 06:29 and sunset at 17:46 CST.
Sunshine
The average sunshine in December is 7.5h.UV index
The months with the highest UV index in San Juan Bautista are January through December, with an average maximum UV index of 6. The months with the lowest UV index in San Juan Bautista are January through December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: In December, the maximum UV index of 6 suggests this advice:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. 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. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in San Juan Bautista in December?
What is the average humidity in December in San Juan Bautista?
How much does it rain in San Juan Bautista in December?
What is the month with the shortest days in San Juan Bautista?
What is the average length of the day in December in San Juan Bautista?
When is the sunrise / sunset in December in San Juan Bautista?
How long on average sun shines in December in San Juan Bautista?
What are the months with the highest UV index in San Juan Bautista?
When is the lowest UV index in San Juan Bautista?
What is the UV index reading in December in San Juan Bautista?
Average temperature in December
San Juan Bautista, 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 Bautista, 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 Bautista, 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 Bautista, 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 Bautista, 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 Bautista, 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 Bautista, 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 Bautista, 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 Bautista, 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 Bautista, 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 Bautista, 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).
