December weather forecast
Tecapán, El Salvador

December, the first month of the winter in Tecapán, is still a hot month, with an average temperature ranging between max 31.1°C (88°F) and min 20.7°C (69.3°F).

Temperature

The shift into December finds Tecapán at an average high-temperature of a still hot 31.1°C (88°F), closely comparable to November's conditions. December nights in Tecapán are marked by an average temperature drop to a pleasant 20.7°C (69.3°F).

Heat index

Throughout December, the heat index is evaluated at a fiery hot 38°C (100.4°F). Adopt heightened safety measures, heat cramps and heat exhaustion may occur. Sustained activity might cause heatstroke.
Heat index guidelines indicate values are for light wind scenarios and shaded regions. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.
Perspiration is essential for the human body; it facilitates cooling through the process of sweat evaporation. An increase in relative humidity retards evaporation, subsequently reducing the body's heat removal rate and leading to a sensation of being overly warm. Should the body fail to balance its heat gain, the escalating temperature poses health challenges.

Humidity

The average relative humidity in December in Tecapán is 69%.

Rainfall

In Tecapán, El Salvador, during December, the rain falls for 4.8 days and regularly aggregates up to 11mm (0.43") of precipitation. In Tecapán, during the entire year, the rain falls for 206.2 days and collects up to 1242mm (48.9") 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 the month, sunrise is at 06:01 and sunset at 17:24. On the last day of December, sunrise is at 06:16 and sunset at 17:37 CST.

Sunshine

With an average of 7.6h of sunshine, December has the least sunshine of the year.

UV index

The months with the highest UV index are January through September and December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: A maximum daily UV index of 7 during December morphs into the following directions:
Inhibit overexposure. Warding off sun damage is of utmost importance. 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. A hat with a broad brim is indispensable, filtering out up to half of UV rays.