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
With the transition into December, San Rafael Obrajuelo notes an average high-temperature of a still hot 31.8°C (89.2°F), closely resembling November. December brings with it a nighttime average temperature of 20°C (68°F).Heat index
During December, the heat index is calculated to be a torrid 39°C (102.2°F). Undertake extra safety actions, heat cramps and heat exhaustion are expected. Heatstroke may result from lengthy activity.Understand that the heat index values take into account shaded locations and mild winds. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', provides an understanding of perceived warmth by combining temperature and relative humidity. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. 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 particularly relevant to babies and toddlers. Young ones often do not realize the necessity to rest and replenish their fluids. Thirst is a delayed indication of dehydration - keeping hydrated, particularly in prolonged physical activity, is crucial.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. In situations of high air temperature combined with high humidity (significant heat index), the body's ability to perspire is reduced, heightening the sense of warmth. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.
Humidity
The average relative humidity in December is 68%.Rainfall
In San Rafael Obrajuelo, during December, the rain falls for 5.7 days and regularly aggregates up to 9mm (0.35") of precipitation. Throughout the year, in San Rafael Obrajuelo, there are 216.4 rainfall days, and 1164mm (45.83") 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 the month, sunrise is at 06:03 and sunset at 17:26. On the last day of December, sunrise is at 06:18 and sunset at 17:39 CST.
Sunshine
December has the least sunshine of the year in San Rafael Obrajuelo, El Salvador, with an average of 7.6h of sunshine.UV index
January through July and December, with an average maximum UV index of 7, are months with the highest UV index in San Rafael Obrajuelo. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: In December, a regular UV index of 7 translates into these guidelines:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is December in San Rafael Obrajuelo?
What is the average humidity in December in San Rafael Obrajuelo?
How much does it rain in San Rafael Obrajuelo in December?
What is the month with the shortest days in San Rafael Obrajuelo?
What is the average length of the day in December in San Rafael Obrajuelo?
What time are sunrise and sunset in December in San Rafael Obrajuelo?
What is the month with the least sunshine in San Rafael Obrajuelo?
How many hours of sunshine does San Rafael Obrajuelo have in December?
What is the month with the highest UV index in San Rafael Obrajuelo?
What is the UV index intensity in December in San Rafael Obrajuelo?
Average temperature in December
San Rafael Obrajuelo, El Salvador
- Average high temperature in December: 31.8°C
The warmest month (with the highest average high temperature) is March (34°C).
The month with the lowest average high temperature is October (30.2°C).
- Average low temperature in December: 20°C
The month with the highest average low temperature is April (23.6°C).
The coldest months (with the lowest average low temperature) are January and December (20°C).
Average pressure in December
San Rafael Obrajuelo, El Salvador
- Average pressure in December: 1012.6mbar
The month with the highest atmospheric pressure is January (1013.2mbar).
The months with the lowest atmospheric pressure are May and October (1011.1mbar).
Average wind speed in December
San Rafael Obrajuelo, El Salvador
- Average wind speed in December: 7.5km/h
The windiest month (with the highest average wind speed) is January (8.1km/h).
The calmest month (with the lowest average wind speed) is June (5.1km/h).
Average humidity in December
San Rafael Obrajuelo, El Salvador
- Average humidity in December: 68%
The month with the highest relative humidity is September (84%).
The month with the lowest relative humidity is March (60%).
Average rainfall in December
San Rafael Obrajuelo, El Salvador
- Average rainfall in December: 9mm
The wettest month (with the highest rainfall) is October (215mm).
The driest month (with the least rainfall) is January (2mm).
Average rainfall days in December
San Rafael Obrajuelo, El Salvador
- Average rainfall days in December: 5.7 days
The months with the highest number of rainy days are May and September (28.7 days).
The month with the least rainy days is January (2.4 days).
Average daylight in December /
Average sunshine in December
San Rafael Obrajuelo, 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 12min).
The month with the least sunshine is December (Average sunshine: 7h and 36min).
Average sunshine days in December
San Rafael Obrajuelo, El Salvador
- Average sunshine days in December: 24.3 days
The month with the most sunshine days is January (27.2 days).
The month with the least sunshine days is September (0.7 days).
Average UV index in December
San Rafael Obrajuelo, El Salvador
- Average UV index in December: 7
The months with the highest UV index are January, February, March, April, May, June, July and December (UV index 7).
The months with the lowest UV index are August, September, October and November (UV index 6).
Average cloud cover in December
San Rafael Obrajuelo, El Salvador
- Average cloud cover in December: 16
The month with the most cloud cover is September (Cloud cover 48).
The month with the least cloud cover is January (Cloud cover 15).
Average visibility in December
San Rafael Obrajuelo, 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).
