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 snowfall in December
- Average snowfall 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
December's average high-temperature stands at a still tropical 30.6°C (87.1°F), showing little deviation from November's 30.3°C (86.5°F). Despite a stark disparity with daily highs, San Simon records an average nighttime temperature of 17.8°C (64°F) in December.Heat index
In December, the heat index is calculated to be a fiery hot 36°C (96.8°F). Implement additional cautionary measures, heat cramps and heat exhaustion could occur. Prolonged activity might induce heatstroke.When referencing the heat index, its values are suitable for shady environments and light breezes. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a single figure representing how weather conditions feel when combining temperature and humidity. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Children frequently do not comprehend the need for rest and hydration. Thirst is an advanced stage of dehydration - staying hydrated, especially during extended physical exercises, is essential.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. When the air contains significant moisture, the efficiency of the evaporation process decreases, preventing the body from cooling down effectively and creating a feeling of overheating. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.
Humidity
In San Simon, El Salvador, the average relative humidity in December is 67%.Rainfall
In December, in San Simon, the rain falls for 3.7 days. Throughout December, 6mm (0.24") of precipitation is accumulated. Throughout the year, in San Simon, there are 188.1 rainfall days, and 832mm (32.76") of precipitation is accumulated.Snowfall
January through August, October through December are months without snowfall in San Simon, El Salvador.Daylight
With an average of 11h and 18min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 06:01 and sunset at 17:23. On the last day of December, in San Simon, sunrise is at 06:16 and sunset at 17:36 CST.
Sunshine
January and December, with an average of 7.7h of sunshine, are months with the least sunshine in San Simon.UV index
The months with the lowest UV index in San Simon, El Salvador, are January, May, June, August through December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: In December, an average UV index of 6 transforms into the following instructions:
Ward off overexposure. Defence against solar harm is crucial. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Frequently asked questions
How hot is December in San Simon?
What is the average humidity in December in San Simon?
How much does it rain in San Simon in December?
When it does not snow in San Simon?
What is the month with the shortest days in San Simon?
How many hours of daylight does San Simon have in December?
When is the sunrise / sunset in December in San Simon?
What are the months with the least sunshine in San Simon?
How long on average sun shines in December in San Simon?
What are the months with the lowest UV index in San Simon?
What is the UV index reading in December in San Simon?
Average temperature in December
San Simon, El Salvador
- Average high temperature in December: 30.6°C
The warmest month (with the highest average high temperature) is April (35°C).
The month with the lowest average high temperature is October (29.9°C).
- Average low temperature in December: 17.8°C
The month with the highest average low temperature is May (21.9°C).
The coldest month (with the lowest average low temperature) is December (17.8°C).
Average pressure in December
San Simon, El Salvador
- Average pressure in December: 1013.4mbar
The month with the highest atmospheric pressure is January (1014mbar).
The months with the lowest atmospheric pressure are May and October (1011.6mbar).
Average wind speed in December
San Simon, El Salvador
- Average wind speed in December: 6.7km/h
The windiest month (with the highest average wind speed) is January (7.3km/h).
The calmest months (with the lowest average wind speed) are June and September (3.8km/h).
Average humidity in December
San Simon, El Salvador
- Average humidity in December: 67%
The month with the highest relative humidity is October (82%).
The month with the lowest relative humidity is March (56%).
Average rainfall in December
San Simon, El Salvador
- Average rainfall in December: 6mm
The wettest month (with the highest rainfall) is May (150mm).
The driest month (with the least rainfall) is January (1mm).
Average rainfall days in December
San Simon, El Salvador
- Average rainfall days in December: 3.7 days
The month with the highest number of rainy days is September (25.7 days).
The month with the least rainy days is January (1.6 days).
Average snowfall in December
San Simon, El Salvador
- Average snowfall in December: 0mm
The month with the highest snowfall is September (1mm).
The months with the least snowfall are January, February, March, April, May, June, July, August, October, November and December (0mm).
Average snowfall days in December
San Simon, El Salvador
- Average snowfall days in December: 0 days
The month with the highest number of snowfall days is September (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, October, November and December (0 days).
Average daylight in December /
Average sunshine in December
San Simon, El Salvador
- Average daylight in December: 11h and 2min
The month with the longest days is June (Average daylight: 12h and 54min).
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 36min).
The months with the least sunshine are January and December (Average sunshine: 7h and 42min).
Average sunshine days in December
San Simon, El Salvador
- Average sunshine days in December: 26.3 days
The month with the most sunshine days is January (29.1 days).
The month with the least sunshine days is September (3.6 days).
Average UV index in December
San Simon, El Salvador
- Average UV index in December: 6
The months with the highest UV index are February, March, April and July (UV index 7).
The months with the lowest UV index are January, May, June, August, September, October, November and December (UV index 6).
Average cloud cover in December
San Simon, El Salvador
- Average cloud cover in December: 13
The month with the most cloud cover is September (Cloud cover 47).
The months with the least cloud cover are January and December (Cloud cover 13).
Average visibility in December
San Simon, El Salvador
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, April and December (10km).
The month with the lowest visibility is September (7km).
San Simon, El Salvador
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