December weather forecast
San Juan Tepezontes, El Salvador

December ushers in pleasant weather conditions in San Juan Tepezontes, serving as a relief from the preceding humid months. Temperatures hold steady, and relative humidity plunges to its lowest level since the start of the year. Rainfall returns to a remarkably lower volume of 5mm (0.2"), which underlines the arrival of the dry season. Minimal cloud coverage opens up the heavens for extended daylight hours. The weather remains refreshing all through the month, closing the year on a bright note.

Temperature

The unfolding of December in San Juan Tepezontes shows an average high-temperature of a still hot 30.8°C (87.4°F), indicating a slight variance from November's 30.5°C (86.9°F). The December nights in San Juan Tepezontes, El Salvador, bear witness to a significant drop from the daytime highs, settling at an average temperature of 18.6°C (65.5°F).

Heat index

The average heat index in December is appraised at a very hot 37°C (98.6°F). Exercise heightened safety, heat cramps and heat exhaustion are probable. Persistent activity may provoke heatstroke.
Note that heat index values are valued for light wind and location in the shade. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'feels like' or 'real feel', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Young kids are often more at risk than adults as they tend to perspire less. Besides, their skin surface is larger relative to their small bodies, and their increased heat output from their active lifestyle compounds their risk.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. When the level of relative humidity is elevated, evaporation diminishes, causing more warmth to be retained in the body than in dry air. Exceeding the body's heat disposal threshold results in a rise in body temperature and potential thermal disorders.

Humidity

In December, the average relative humidity is 69%.

Rainfall

In San Juan Tepezontes, in December, during 3.3 rainfall days, 5mm (0.2") of precipitation is typically accumulated. In San Juan Tepezontes, during the entire year, the rain falls for 192.2 days and collects up to 1062mm (41.81") of precipitation.

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 06:19 and sunset at 17:39 CST.

Sunshine

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

UV index

January, June through December, with an average maximum UV index of 6, are months with the lowest UV index in San Juan Tepezontes. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for average individuals.
Note: In December, the UV index of 6 transforms into the following advice:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.