December weather forecast
Tecoluca, El Salvador

The first month of the winter, December, is also a hot month in Tecoluca, El Salvador, with temperature in the range of an average high of 30.8°C (87.4°F) and an average low of 18.6°C (65.5°F).

Temperature

Tecoluca marks the start of December with an average high-temperature of a still hot 30.8°C (87.4°F), hinting at a slight fluctuation from November's 30.5°C (86.9°F). Tecoluca, in December, displays a significant temperature downturn during the night, with an average reading of 18.6°C (65.5°F).

Heat index

The heat index value during December is calculated to be a sweltering 37°C (98.6°F). Preventive measures are required to mitigate the risk of heat cramps and heat exhaustion. Continuous activity may precipitate heatstroke.
Records show heat index calculations are tailored for shaded regions and mild winds. The heat index can potentially augment by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'feels like' or 'real feel', marries air temperature and humidity to produce a value illustrating perceived warmth. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. Considering the impact of direct sunlight, it's possible for the heat index to surge by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. When the air holds a significant amount of moisture, the efficiency of the evaporation process is decreased, preventing the body from cooling down efficiently, leading to the sensation of overheating. Heat-related challenges, like dehydration, can be anticipated when body heat isn't managed effectively.

Humidity

In Tecoluca, the average relative humidity in December is 69%.

Rainfall

In Tecoluca, in December, it is raining for 3.3 days, with typically 5mm (0.2") of accumulated precipitation. In Tecoluca, during the entire year, the rain falls for 192.2 days and collects up to 1062mm (41.81") of precipitation.

Daylight

December has the shortest days of the year in Tecoluca, with an average of 11h and 18min of daylight.
On the first day of December, 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

January, June through December, with an average maximum UV index of 6, are months with the lowest UV index in Tecoluca. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the average person.
Note: A daily maximum UV index of 6 in December translates into the following instructions:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.