December weather forecast
Anaurilândia, Brazil

The first month of the summer, December, is also a hot month in Anaurilândia, Brazil, with an average temperature fluctuating between 21.8°C (71.2°F) and 31°C (87.8°F).

Temperature

Anaurilândia notes an average high-temperature of a still tropical 31°C (87.8°F) in December, hardly diverging from November. Nighttime temperatures in Anaurilândia consistently average an agreeable 21.8°C (71.2°F) during December.

Heat index

The heat index for December is computed to be a blistering 40°C (104°F). Preventive measures are required to mitigate the risk of heat cramps and heat exhaustion. Continuous activity may precipitate heatstroke.
Consider that heat index readings are for situations in the shade and light wind. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', combines both the air temperature and the humidity level to give a perceived human temperature. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.
The human body has a built-in cooling mechanism through perspiration; evaporating sweat dissipates the excess heat. During conditions of high air temperature and humidity (high heat index), the body's ability to perspire is inhibited, increasing the sensation of warmth. As the body accumulates more heat than it can release, body temperature goes up, increasing the risk of heat-related health issues.

Humidity

In Anaurilândia, the average relative humidity in December is 78%.

Rainfall

In Anaurilândia, during December, the rain falls for 24.5 days and regularly aggregates up to 139mm (5.47") of precipitation. In Anaurilândia, during the entire year, the rain falls for 185.8 days and collects up to 1029mm (40.51") of precipitation.

Daylight

December has the longest days of the year, with an average of 13h and 30min of daylight.
On the first day of the month, sunrise is at 04:38 and sunset at 18:01. On the last day of December, sunrise is at 04:50 and sunset at 18:18 -04.

Sunshine

In Anaurilândia, the average sunshine in December is 8.1h.

UV index

In Anaurilândia, the average daily maximum UV index in December is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: The maximum UV index of 6 during December translates into these guidelines:
Prevent overexposure. Protection from the sun's harmful effects is needed. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.