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
The advent of December observes an average high-temperature of a still tropical 30.6°C (87.1°F), nearly identical to November's 30.3°C (86.5°F). During December, El Rosario reports a marked contrast from daily peak temperatures, with an average nighttime reading of 17.8°C (64°F).Heat index
December's average heat index is calculated to be a sweltering 36°C (96.8°F). Incorporate additional preventive steps, heat exhaustion and heat cramps are possible. Long-lasting activity may cause heatstroke.In terms of the heat index, values are set with light wind and shade conditions in mind. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. Under conditions of high relative humidity, the rate of evaporation decreases. This results in the body retaining more heat than under conditions of dry air. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.
Humidity
In El Rosario, the average relative humidity in December is 67%.Rainfall
In El Rosario, in December, it is raining for 3.7 days, with typically 6mm (0.24") of accumulated precipitation. Throughout the year, there are 188.1 rainfall days, and 832mm (32.76") of precipitation is accumulated.Snowfall
In El Rosario, El Salvador, snow does not fall in January through August, October through December.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 06:03 and sunset at 17:26. On the last day of the month, sunrise is at 06:19 and sunset at 17:38 CST.
Sunshine
The months with the least sunshine in El Rosario are January and December, with an average of 7.7h of sunshine.UV index
January, May, June, August through December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index estimate of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for the average person.Note: A maximum daily UV index of 6 during December morphs into the following directions:
Fend off overexposure. Sun protection is vital. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Frequently asked questions
How hot is December in El Rosario?
What is the average humidity in December in El Rosario?
How much does it rain in El Rosario in December?
When it does not snow in El Rosario?
What is the month with the shortest days in El Rosario?
What is the average length of the day in December in El Rosario?
When are sunrise and sunset in December in El Rosario?
What are the months with the least sunshine in El Rosario?
How many hours of sunshine does El Rosario have in December?
When is the lowest UV index in El Rosario?
What is the UV index reading in December in El Rosario?
Average temperature in December
El Rosario, 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
El Rosario, 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
El Rosario, 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
El Rosario, 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
El Rosario, 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
El Rosario, 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
El Rosario, 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
El Rosario, 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
El Rosario, 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
El Rosario, 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
El Rosario, 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
El Rosario, 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
El Rosario, 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).
El Rosario, El Salvador
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