December weather forecast
Comasagua, El Salvador

Wrapping up the year, December in Comasagua embraces cooler temperatures, lower humidity, and just 4mm (0.16") of rainfall, making it a dry month. The weather showcases a drop from November's already low rainfall, setting the stage for a festive atmosphere. The city revels under the influence of swirling cool breezes, making the month ideal for tourists seeking a mild climate. A unique serenity and charm graces the city, a fitting end to the year of changing weather. Despite the capricious nature of the city's climate throughout the year, December's mild weather brings forward a harmonious close to Comasagua's annual weather cycle.

Temperature

With December's arrival, Comasagua's weather records an average high-temperature of a still warm 29.9°C (85.8°F), marking no difference from November. In Comasagua, an average temperature of 19.5°C (67.1°F) is noted during December nights.

Heat index

The heat index value for 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.
Factoring in the heat index, values are geared towards shaded areas with light breezes. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'apparent temperature' or 'real feel', quantifies the warmth felt when relative humidity is considered. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. Augmented relative humidity impedes typical body cooling mechanisms by lowering the evaporation rate, resulting in decreased body cooling and an amplified perception of heat. When the body's heat gain surpasses its removal capacity, body temperature starts to climb, leading to potential heat-related ailments.

Humidity

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

Rainfall

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

Daylight

December has the shortest days of the year in Comasagua, with an average of 11h and 18min of daylight.
On the first day of the month, sunrise is at 06:05 and sunset at 17:28. On the last day of December, sunrise is at 06:20 and sunset at 17:41 CST.

Sunshine

January and December, with an average of 7.7h of sunshine, are months with the least sunshine in Comasagua.

UV index

The months with the lowest UV index in Comasagua are January, May, June, August through December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for the average person.
Note: In December, the maximum UV index of 6 transforms into these recommendations:
Implement precautions and maintain sun safety methods. Avoidance of sunburn is demanded. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.