December weather forecast
Ahuachapan, El Salvador

December rounds off the year in Ahuachapan with a welcoming dry spell, accompanied by negligible rainfall of just 4mm (0.16"). This month recognizes itself by the dominance of clear skies, abundant sunshine, and minimal cloud cover. Weather conditions lean towards pleasant warmth with a comfortable range of temperatures. It’s a complete 180-degree turn from the wet, humid months of mid-year, painting a perfect picture for the end of the year.

Temperature

At the onset of December, Ahuachapan records an average high-temperature of a still moderately hot 29.3°C (84.7°F), showing little deviation from the preceding month. December sees the temperature falling to a mean low of 18.1°C (64.6°F).

Heat index

In December, the heat index is estimated at a hot 34°C (93.2°F). Use additional protective measures, heat cramps and heat exhaustion are possible outcomes. Continuous activity might lead to heatstroke.
The metrics for the heat index are tailored for both shady environments and light winds. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'feels like', gauges the sensation of temperature factoring in the air's moisture content. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. Recognize that direct exposure to the sun can escalate the heat effect, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values hold particular importance 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.

Humidity

In December, the average relative humidity is 71%.

Rainfall

In Ahuachapan, in December, it is raining for 3 days, with typically 4mm (0.16") of accumulated precipitation. In Ahuachapan, during the entire year, the rain falls for 169.5 days and collects up to 865mm (34.06") of precipitation.

Daylight

With an average of 11h and 18min of daylight, December has the shortest days of the year in Ahuachapan.
On the first day of December, sunrise is at 06:07 and sunset at 17:29. On the last day of the month, sunrise is at 06:23 and sunset at 17:42 CST.

Sunshine

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

UV index

January, February, May through December, with an average maximum UV index of 6, are months with the lowest UV index in Ahuachapan. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: The maximum UV index of 6 during December translates into these guidelines:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.