December weather forecast
Amatitán, El Salvador

December, the first month of the winter in Amatitán, is still a hot month, with an average temperature varying between 30.8°C (87.4°F) and 19.1°C (66.4°F).

Temperature

December's beginning signals an average high-temperature of a still hot 30.8°C (87.4°F), barely different from November's 30.3°C (86.5°F). Amatitán usually reports an average low-temperature of 19.1°C (66.4°F) during the month of December.

Heat index

During December, the heat index is evaluated at a sweltering 37°C (98.6°F). Greater safety measures are needed, risk of heat exhaustion and heat cramps is high. Continuous activity might trigger heatstroke.
Evaluating the heat index requires understanding its values in the shade and with gentle winds. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
The natural method the human body uses to remove excess heat is by perspiring and letting sweat evaporate. Under conditions of increased relative humidity, the evaporation rate lessens, causing the body to retain more heat than under less humid conditions. Potential thermal conditions emerge as the body's heat gain outpaces its cooling mechanisms.

Humidity

The average relative humidity in December is 69%.

Rainfall

In December, in Amatitán, the rain falls for 2.8 days. Throughout December, 6mm (0.24") of precipitation is accumulated. Throughout the year, in Amatitán, El Salvador, 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 in Amatitán.
On the first day of December in Amatitán, sunrise is at 06:04 and sunset at 17:26. On the last day of the month, sunrise is at 06:19 and sunset at 17:39 CST.

Sunshine

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

UV index

The months with the lowest UV index in Amatitán, El Salvador, are May through December, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: In December, a daily maximum UV index of 6 leads to the following instructions:
Apply measures and align with sun safety principles. Safeguarding against skin and eye injury is pivotal. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.