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
In December, the average high-temperature registers at a still agreeable 22.8°C (73°F), nearly identical to November's 22.6°C (72.7°F). During December, Casillas witnesses a consistent average low-temperature of 12.4°C (54.3°F).Humidity
In December, the average relative humidity in Casillas is 79%.Rainfall
In Casillas, Guatemala, during December, the rain falls for 7.5 days and regularly aggregates up to 9mm (0.35") of precipitation. Throughout the year, there are 231.3 rainfall days, and 1656mm (65.2") of precipitation is accumulated.Daylight
The month with the shortest days is December, with an average of 11h and 18min of daylight.On the first day of December in Casillas, sunrise is at 06:10 and sunset at 17:30. On the last day of the month, sunrise is at 06:25 and sunset at 17:43 CST.
Sunshine
In December, the average sunshine is 7.5h.UV index
In Casillas, the average daily maximum UV index in December is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.Note: During December, 5 as the daily maximum UV index converts into the following advice:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. When the Sun is at its strongest around midday, find shade and limit exposure. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Casillas in December?
What is the average humidity in December in Casillas?
How many days does it rain in December in Casillas?
What is the month with the shortest days in Casillas?
What is the average length of the day in December in Casillas?
When are sunrise and sunset in December in Casillas?
How many hours of sunshine does Casillas have in December?
What is the UV index reading in December in Casillas?
Average temperature in December
Casillas, Guatemala
- Average high temperature in December: 22.8°C
The warmest month (with the highest average high temperature) is April (27.3°C).
The month with the lowest average high temperature is October (22.5°C).
- Average low temperature in December: 12.4°C
The month with the highest average low temperature is May (16.5°C).
The coldest month (with the lowest average low temperature) is January (11.8°C).
Average pressure in December
Casillas, Guatemala
- Average pressure in December: 1014.8mbar
The month with the highest atmospheric pressure is January (1015.5mbar).
The month with the lowest atmospheric pressure is May (1012.5mbar).
Average wind speed in December
Casillas, Guatemala
- Average wind speed in December: 11.9km/h
The windiest month (with the highest average wind speed) is January (12.8km/h).
The calmest month (with the lowest average wind speed) is September (5.9km/h).
Average humidity in December
Casillas, Guatemala
- Average humidity in December: 79%
The month with the highest relative humidity is September (90%).
The month with the lowest relative humidity is March (69%).
Average rainfall in December
Casillas, Guatemala
- Average rainfall in December: 9mm
The wettest month (with the highest rainfall) is May (285mm).
The driest month (with the least rainfall) is January (7mm).
Average rainfall days in December
Casillas, Guatemala
- Average rainfall days in December: 7.5 days
The month with the highest number of rainy days is September (28.7 days).
The month with the least rainy days is January (6.7 days).
Average daylight in December /
Average sunshine in December
Casillas, 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 month with the most sunshine is April (Average sunshine: 11h and 18min).
The month with the least sunshine is October (Average sunshine: 7h and 24min).
Average sunshine days in December
Casillas, Guatemala
- Average sunshine days in December: 19.5 days
The month with the most sunshine days is January (20.8 days).
The month with the least sunshine days is September (0.9 days).
Average UV index in December
Casillas, Guatemala
- Average UV index in December: 5
The months with the highest UV index are March and April (UV index 6).
The months with the lowest UV index are August and October (UV index 4).
Average cloud cover in December
Casillas, Guatemala
- Average cloud cover in December: 28
The months with the most cloud cover are June and September (Cloud cover 59).
The months with the least cloud cover are January, February and March (Cloud cover 26).
Average visibility in December
Casillas, Guatemala
- Average visibility in December: 9km
The month with the highest visibility is March (10km).
The month with the lowest visibility is September (6km).
