December weather forecast
Apopa, El Salvador

December brings to Apopa the return of a much drier season with only 6mm (0.24") of recorded rainfall. As the year wraps up, the weather takes on a gentler nature with moderate temperatures, low rainfall and overall pleasant climate conditions. Adding to the charm of the holidays, the wind speed increases to 7.3km/h (4.5mph) in December, adding a crispness to the air. The end of the year highlights December’s return to low rainfall, moderate temperatures, and increased wind speeds.

Temperature

The ushering in of December in Apopa brings an average high-temperature of a still tropical 30.8°C (87.4°F), closely mirroring the 30.3°C (86.5°F) of November. The mean low-temperature during December nights in Apopa is a refreshing 19.1°C (66.4°F).

Heat index

In December, the heat index is appraised at a very hot 37°C (98.6°F). Ensure extra safety steps, heat exhaustion and heat cramps are likely. Long activity might lead to heatstroke.
Observations indicate that the heat index values are for shady locations with light wind. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', reflects the feeling of heat when considering both air temperature and humidity. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. When there is abundant moisture in the air, the body's cooling through the evaporation process becomes less effective, leading to the sensation of overheating. If heat absorption exceeds the body's cooling ability, body temperature can elevate, resulting in potential thermal illnesses.

Humidity

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

Rainfall

In December, the rain falls for 2.8 days. Throughout December, 6mm (0.24") of precipitation is accumulated. Throughout the year, there are 196.7 rainfall days, and 1216mm (47.87") of precipitation is accumulated.

Daylight

With an average of 11h and 18min of daylight, December has the shortest days of the year.
On the first day of December, sunrise is at 06:04 and sunset at 17:27. On the last day of the month, sunrise is at 06:20 and sunset at 17:39 CST.

Sunshine

The months with the least sunshine in Apopa are January and December, with an average of 7.7h of sunshine.

UV index

May through December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for average individuals.
Note: In December, the UV index of 6 transforms into the following advice:
Skirt overexposure. People with light complexions might get scorched in under 20 minutes. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.