December weather forecast
Guadalupe, El Salvador

December, the first month of the winter in Guadalupe, is also a hot month, with an average temperature fluctuating between 31.4°C (88.5°F) and 18.9°C (66°F).

Temperature

The advent of December brings an average high-temperature of a still hot 31.4°C (88.5°F), exhibiting minor difference from the previous month. Guadalupe observes a dramatic plunge from daytime highs in December, settling at an average low-temperature of 18.9°C (66°F).

Heat index

The average heat index in December is computed to be a fiery hot 38°C (100.4°F). Adopt extra preventive measures, the occurrence of heat cramps and heat exhaustion is likely. Heatstroke may follow extended activity.
One should be cognizant that the heat index values are tailored for shaded spots and mild winds. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', shows a temperature sensation when both heat and moisture conditions are combined. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. Direct exposure to sun rays can potentially augment the heat sensation, elevating the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Juveniles often do not understand the need to recuperate and rehydrate. Thirst is a delayed symptom of dehydration - hence, it is vital to maintain hydration, particularly during ongoing physical activities.
The body's inherent cooling system operates through perspiration, wherein evaporating sweat offsets excessive heat. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. When heat uptake goes beyond the body's cooling mechanisms, there's a surge in body temperature, posing health risks.

Humidity

In Guadalupe, the average relative humidity in December is 68%.

Rainfall

In December, in Guadalupe, the rain falls for 5.1 days. Throughout December, 10mm (0.39") of precipitation is accumulated. Throughout the year, in Guadalupe, there are 219.1 rainfall days, and 1259mm (49.57") of precipitation is accumulated.

Daylight

December has the shortest days of the year in Guadalupe, 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 06:18 and sunset at 17:39 CST.

Sunshine

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

UV index

The months with the lowest UV index in Guadalupe, El Salvador, are June, August through December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: In December, the maximum UV index of 6 transforms into these recommendations:
Uphold preventive measures and conform to sun safety guidelines. Defending against skin and eye harm is crucial. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.