December weather forecast
Chiltiupan, El Salvador

Wrapping up the year, December in Chiltiupan bestows a cooler climate with further diminished rainfall and relative humidity. The UV index remains constant, marking steady sunlight exposure throughout the year. With the least amount of rainfall, December proves to be an ideal time for outdoor adventures. A record low rainfall of 4mm (0.16") indicates a predominantly dry environment, perfect for engaging in various leisure activities. Wind speed elevates to an average of 7.9km/h (4.9mph), offering a pleasant breeze during the festive season.

Temperature

Chiltiupan logs a shift to a still moderately hot 29.9°C (85.8°F) as the average high temperature in December, the same as November. In Chiltiupan, the nighttime temperature averages to a comfortable 19.5°C (67.1°F) during December.

Heat index

In December, the average heat index is evaluated at a sweltering 35°C (95°F). Implement additional cautionary measures, heat cramps and heat exhaustion could occur. Prolonged activity might induce heatstroke.
Metrics for the heat index primarily focus on shaded spots and light wind conditions. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is a metric representing the sensation of warmth when air temperature and moisture come together. 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. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.
As a reaction to high temperatures, the human body begins to perspire, using the evaporation of sweat to lower its temperature. Heightened relative humidity interferes with the body's usual cooling mechanism by reducing evaporation, subsequently decreasing the body's cooling rate and increasing the sensation of heat. As the body accumulates more heat than it can release, body temperature goes up, increasing the risk of heat-related health issues.

Humidity

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

Rainfall

In Chiltiupan, El Salvador, in December, it is raining for 2.3 days, with typically 4mm (0.16") of accumulated precipitation. In Chiltiupan, during the entire year, the rain falls for 187 days and collects up to 1106mm (43.54") of precipitation.

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 06:05 and sunset at 17:28. On the last day of the month, 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.

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 threat to health from exposure to the Sun's UV radiation for average individuals.
Note: The UV index of 6 during December leads to these advisories:
Guard against overexposure. Protection from sun-induced harm is essential. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.