December weather forecast
Jocoro, El Salvador

The first month of the winter, December, is still a tropical month in Jocoro, El Salvador, with temperature in the range of an average high of 32°C (89.6°F) and an average low of 20°C (68°F).

Temperature

The arrival of December marks a slight shift to an average high-temperature of a still hot 32°C (89.6°F) from November's 31.5°C (88.7°F). In December, Jocoro endures a notable temperature shift from day to night, with lows averaging at an agreeable 20°C (68°F).

Heat index

During December, the heat index is appraised at a very hot 39°C (102.2°F). Undertake additional precautions, heat cramps and heat exhaustion could happen. Heatstroke could occur from sustained activity.
Heat index values are typically calculated for conditions of shade and a light breeze. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is an aggregate value of air's warmth and moisture to show the human-felt temperature. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.
The innate cooling system of the human body revolves around perspiration, with the evaporation of sweat being central to this process. With an abundance of moisture present in the air, the process of evaporation becomes less effective, and the body fails to cool down as it should, leading to the sensation of overheating. When body temperature rises due to an imbalance in heat gain, there's a potential for dehydration and overheating.

Humidity

The average relative humidity in December is 65%.

Rainfall

In December, in Jocoro, the rain falls for 4.2 days. Throughout December, 5mm (0.2") of precipitation is accumulated. Throughout the year, there are 188.7 rainfall days, and 986mm (38.82") of precipitation is accumulated.

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 06:00 and sunset at 17:22. On the last day of December, sunrise is at 06:15 and sunset at 17:35 CST.

Sunshine

December has the least sunshine of the year, with an average of 7.4h of sunshine.

UV index

January through August, November and December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: The daily high UV index of 7 in December translates into this advice:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. Enhance your sun protection with tightly woven, yet airy clothing.