December weather forecast
Joya de Ceren, El Salvador

As December takes over, it welcomes the dry season's full effect. The rainfall levels continue to decline, recording only 3mm (0.12"), the lowest throughout the year. Similarly, the temperature lowers, portraying cooler weather fitting for the holiday season. The wind speeds continue to rise, bringing along pleasant breezes. Observing these weather characteristics, December in Joya de Ceren can be seen as the commencement of a refreshing and cooler phase, setting the stage for a new cycle as the year ends.

Temperature

In December, Joya de Ceren experiences a minor shift in meteorological conditions with average high-temperatures marked at a still warm 29.6°C (85.3°F), closely mirroring the climate in November. In December, the temperature in Joya de Ceren drops to an average of 20.7°C (69.3°F) at night.

Heat index

The heat index value for December is computed to be a tropical 34°C (93.2°F). Preventive measures are required to mitigate the risk of heat cramps and heat exhaustion. Continuous activity may precipitate heatstroke.
Heat index determinations are made taking into account the shade and light air movements. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is a composite of temperature and humidity figures to convey how warm it feels. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.

Humidity

In Joya de Ceren, the average relative humidity in December is 69%.

Rainfall

In Joya de Ceren, in December, during 1.7 rainfall days, 3mm (0.12") of precipitation is typically accumulated. In Joya de Ceren, during the entire year, the rain falls for 167.4 days and collects up to 855mm (33.66") 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 06:05 and sunset at 17:27. On the last day of December, in Joya de Ceren, sunrise is at 06:20 and sunset at 17:40 CST.

Sunshine

The month with the least sunshine in Joya de Ceren, El Salvador, is December, with an average of 7.5h of sunshine.

UV index

June, August through December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: In December, the UV index of 6 transforms into the following advice:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.