December weather forecast
San Pedro Masahuat, El Salvador

December ushers in the dry season in its full swing in San Pedro Masahuat. Despite the decreased daylight hours, the weather remains pleasant and warm with lower cloud cover. Reduced relative humidity coupled with a decline in rainfall makes it one of the driest months of the year. The city enjoys increased visibility and wind gust reaching a high 14.7km/h (9.1mph) in this month. Temperatures fluctuate moderately, maintaining a comfortable range for both locals and visitors.

Temperature

As December unfolds in San Pedro Masahuat, the average high-temperature reaches a still tropical 31.5°C (88.7°F), showing no fluctuation from the previous month. San Pedro Masahuat's average low-temperature is measured at a pleasant 21.6°C (70.9°F) during December.

Heat index

In December, the heat index is computed to be a very hot 38°C (100.4°F). Incorporate additional safety actions, heat cramps and heat exhaustion are possible. Long-term activity may induce heatstroke.
From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Direct sun exposure is noteworthy in its ability to escalate the felt temperature, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are particularly important for children. Young ones often do not realize the necessity to rest and replenish their fluids. Thirst is a delayed indication of dehydration - keeping hydrated, particularly in prolonged physical activity, is crucial.
Evaporating sweat, thanks to perspiration, acts as a natural air conditioner for the human body. A surge in relative humidity can disrupt the body's normal cooling function by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. When heat surpasses the body's release mechanisms, dehydration and overheating risks become pronounced.

Humidity

The average relative humidity in December is 67%.

Rainfall

In San Pedro Masahuat, El Salvador, in December, during 3.7 rainfall days, 5mm (0.2") of precipitation is typically accumulated. In San Pedro Masahuat, during the entire year, the rain falls for 200.6 days and collects up to 971mm (38.23") of precipitation.

Daylight

December has the shortest days of the year in San Pedro Masahuat, 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 06:19 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 highest UV index are January through August, October through December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: In December, a daily UV index of 7 turns into the following recommendations:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.