December weather forecast
Marilena, Brazil

The first month of the summer, December, is also a moderately hot month in Marilena, Brazil, with an average temperature varying between 29.8°C (85.6°F) and 20.6°C (69.1°F).

Temperature

In December, Marilena notes an average high-temperature of a moderately hot 29.8°C (85.6°F), hardly different from the preceding month. Nighttime temperatures in Marilena, Brazil, hover around an average low of 20.6°C (69.1°F) in December.

Heat index

December's heat index is computed to be a very hot 37°C (98.6°F). More preventive actions are needed, risk of heat exhaustion and heat cramps is significant. Prolonged activity may trigger heatstroke.
Heat index details are generally centered around shaded locations and a mild breeze. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'feels like' 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. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. Direct exposure to sun rays can potentially augment the heat sensation, elevating the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
To offset high temperatures, the human body releases sweat which, upon evaporation, cools it down. In high relative humidity, the body's ability to evaporate heat is diminished, resulting in a heightened feeling of warmth. Excessive heat gain, when not shed effectively by the body, can result in increasing body temperatures and related hazards.

Humidity

In Marilena, the average relative humidity in December is 80%.

Rainfall

In Marilena, Brazil, in December, it is raining for 24.7 days, with typically 173mm (6.81") of accumulated precipitation. In Marilena, during the entire year, the rain falls for 188.5 days and collects up to 1243mm (48.94") of precipitation.

Daylight

December has the longest days of the year in Marilena, with an average of 13h and 30min of daylight.
On the first day of the month, sunrise is at 05:38 and sunset at 19:04. On the last day of December, sunrise is at 05:50 and sunset at 19:20 -03.

Sunshine

The average sunshine in December is 8h.

UV index

January through March, August through December, with an average maximum UV index of 6, are months with the highest UV index in Marilena. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: In December, the UV index of 6 transforms into the following advice:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.