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 moderately hot 28.4°C (83.1°F), nearly identical to November's 28°C (82.4°F). Throughout December, Santiago de la Frontera witnesses a nighttime temperature average of 16.6°C (61.9°F).Heat index
In December, the average heat index is appraised at a hot 32°C (89.6°F). Remaining active during long-lasting exposure could cause fatigue, leading to heat cramps.Records show heat index calculations are tailored for shaded regions and mild winds. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. 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 remain especially vital for babies and toddlers. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.
Humidity
In Santiago de la Frontera, the average relative humidity in December is 74%.Rainfall
In Santiago de la Frontera, El Salvador, in December, it is raining for 2.3 days, with typically 5mm (0.2") of accumulated precipitation. Throughout the year, there are 181.4 rainfall days, and 1055mm (41.54") of precipitation is accumulated.Daylight
With an average of 11h and 18min of daylight, December has the shortest days of the year in Santiago de la Frontera.On the first day of the month, sunrise is at 06:07 and sunset at 17:28. On the last day of December, in Santiago de la Frontera, sunrise is at 06:22 and sunset at 17:41 CST.
Sunshine
In December, the average sunshine in Santiago de la Frontera is 7.6h.UV index
January through August, October through December, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for the ordinary person.Note: An average UV index of 6 in December transforms into this advice:
Skirt overexposure. People with light complexions might get scorched in under 20 minutes. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide 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
How hot does it get in Santiago de la Frontera in December?
What is the average humidity in December in Santiago de la Frontera?
How much does it rain in Santiago de la Frontera in December?
What is the month with the shortest days in Santiago de la Frontera?
How many hours of daylight does Santiago de la Frontera have in December?
What time are sunrise and sunset in December in Santiago de la Frontera?
How many hours of sunshine does Santiago de la Frontera have in December?
What is the month with the highest UV index in Santiago de la Frontera?
What is the UV index intensity in December in Santiago de la Frontera?
Average temperature in December
Santiago de la Frontera, El Salvador
- Average high temperature in December: 28.4°C
The warmest month (with the highest average high temperature) is April (33.2°C).
The month with the lowest average high temperature is October (27.9°C).
- Average low temperature in December: 16.6°C
The month with the highest average low temperature is May (20.7°C).
The coldest month (with the lowest average low temperature) is January (16.3°C).
Average pressure in December
Santiago de la Frontera, El Salvador
- Average pressure in December: 1013.6mbar
The month with the highest atmospheric pressure is January (1014.2mbar).
The months with the lowest atmospheric pressure are May and October (1011.7mbar).
Average wind speed in December
Santiago de la Frontera, El Salvador
- Average wind speed in December: 8.1km/h
The windiest month (with the highest average wind speed) is January (9km/h).
The calmest month (with the lowest average wind speed) is September (4.2km/h).
Average humidity in December
Santiago de la Frontera, El Salvador
- Average humidity in December: 74%
The month with the highest relative humidity is October (86%).
The month with the lowest relative humidity is March (63%).
Average rainfall in December
Santiago de la Frontera, El Salvador
- Average rainfall in December: 5mm
The wettest month (with the highest rainfall) is May (198mm).
The driest month (with the least rainfall) is January (2mm).
Average rainfall days in December
Santiago de la Frontera, El Salvador
- Average rainfall days in December: 2.3 days
The month with the highest number of rainy days is June (25 days).
The month with the least rainy days is January (1.9 days).
Average daylight in December /
Average sunshine in December
Santiago de la Frontera, El Salvador
- 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 4min
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 12min).
Average sunshine days in December
Santiago de la Frontera, El Salvador
- Average sunshine days in December: 28.5 days
The months with the most sunshine days are January and December (28.5 days).
The month with the least sunshine days is September (3.7 days).
Average UV index in December
Santiago de la Frontera, El Salvador
- Average UV index in December: 6
The months with the highest UV index are January, February, March, April, May, June, July, August, October, November and December (UV index 6).
The month with the lowest UV index is September (UV index 5).
Average cloud cover in December
Santiago de la Frontera, El Salvador
- Average cloud cover in December: 20
The month with the most cloud cover is September (Cloud cover 57).
The month with the least cloud cover is January (Cloud cover 17).
Average visibility in December
Santiago de la Frontera, El Salvador
- Average visibility in December: 9km
The months with the highest visibility are February, March and April (10km).
The month with the lowest visibility is September (6km).
