December weather forecast
El Tránsito, El Salvador

The first month of the winter, December, is still a tropical month in El Tránsito, El Salvador, with an average temperature varying between 31.1°C (88°F) and 20.7°C (69.3°F).

Temperature

As El Tránsito steps into December, the average high-temperature holds at a still tropical 31.1°C (88°F), hinting at a minor fluctuation from the prior month. El Tránsito's average low-temperature during December nights is observed to be a pleasant 20.7°C (69.3°F).

Heat index

December's average heat index is computed to be a fiery hot 38°C (100.4°F). Incorporate special precautions, risk of heat exhaustion and heat cramps is substantial. Sustained activity could cause heatstroke.
In terms of the heat index, values are set with light wind and shade conditions in mind. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a metric representing the sensation of warmth when air temperature and moisture come together. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children often fail to recognize the requirement to rest and rehydrate. Thirst, being a late symptom of dehydration, underlines the importance of maintaining hydration, especially during ongoing physical activities.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. When there is an excess of moisture in the atmosphere, the efficiency of the evaporation process is lessened, leading to less efficient body cooling and a sensation of overheating. Exceeding the body's heat disposal threshold results in a rise in body temperature and potential thermal disorders.

Humidity

In El Tránsito, El Salvador, the average relative humidity in December is 69%.

Rainfall

In El Tránsito, in December, it is raining for 4.8 days, with typically 11mm (0.43") of accumulated precipitation. Throughout the year, there are 206.2 rainfall days, and 1242mm (48.9") of precipitation is accumulated.

Daylight

December has the shortest days of the year, with an average of 11h and 24min of daylight.
On the first day of December in El Tránsito, sunrise is at 06:00 and sunset at 17:24. On the last day of the month, sunrise is at 06:15 and sunset at 17:37 CST.

Sunshine

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

UV index

January through September and December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: During December, 7 as the daily maximum UV index converts into the following advice:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.