December weather forecast
Antiguo Cuscatlán, El Salvador

December seals the year's end with the driest month, recording only 4mm (0.16") of precipitation for Antiguo Cuscatlán. Along with a halt in rainfall, the city experiences a further drop in temperature, creating a positive variance from the intense heat recorded in the summer months. With generous sunlight and a drop in humidity, December is decidedly crisp and fresh. Winds clock a significant speed of 7.9km/h (4.9mph) bringing in the cooling winter chill, wrapping up the climatic journey of Antiguo Cuscatlán on a dry and pleasant note.

Temperature

December's weather, recording an average high temperature of a still moderately hot 29.9°C (85.8°F), matches that of November. Antiguo Cuscatlán encounters an average low-temperature of 19.5°C (67.1°F) during December nights.

Heat index

The heat index in December is computed to be a fiery hot 35°C (95°F). Implement heightened safety measures - risk of heat exhaustion and heat cramps is increased. Prolonged activity may result in heatstroke.
Consider that heat index readings are for situations in the shade and light wind. Direct sunlight exposure may result in a rise of the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is the result of factoring in humidity to the air temperature, indicating perceived warmth. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Children frequently do not understand the need for recuperation and hydration. Thirst, being a late manifestation of dehydration, underlines the need to hydrate frequently, especially when engaging in prolonged physical exercises.
The body's inherent cooling system operates through perspiration, wherein evaporating sweat offsets excessive heat. In high relative humidity, the body's ability to evaporate heat is diminished, resulting in a heightened feeling of warmth. With body temperatures on the rise, inefficient heat shedding can lead to dehydration and its associated complications.

Humidity

In Antiguo Cuscatlán, the average relative humidity in December is 70%.

Rainfall

In Antiguo Cuscatlán, during December, the rain falls for 2.3 days and regularly aggregates up to 4mm (0.16") of precipitation. Throughout the year, in Antiguo Cuscatlán, there are 187 rainfall days, and 1106mm (43.54") of precipitation is accumulated.

Daylight

December has the shortest days of the year in Antiguo Cuscatlán, with an average of 11h and 18min of daylight.
On the first day of December in Antiguo Cuscatlán, sunrise is at 06:04 and sunset at 17:27. On the last day of the month, sunrise is at 06:20 and sunset at 17:40 CST.

Sunshine

The months with the least sunshine in Antiguo Cuscatlán 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 reading of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: A typical high UV index of 6 in December suggests the following recommendations:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.