December weather forecast
Aracatu, Brazil

The first month of the summer, December, is still a warm month in Aracatu, Brazil, with an average temperature ranging between max 29.5°C (85.1°F) and min 19.5°C (67.1°F).

Temperature

Transitioning into December, Aracatu records an average high-temperature of a still warm 29.5°C (85.1°F), almost identical to November's 29.6°C (85.3°F). An average low-temperature of 19.5°C (67.1°F) is common during the nights of December.

Heat index

December's average heat index is computed to be a sweltering 35°C (95°F). Take more safety measures, heat exhaustion and heat cramps are potential outcomes. Persistent activity might lead to heatstroke.
It is important to note that the heat index values are for shaded areas and light wind scenarios. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is found by incorporating humidity levels into the air temperature measurement. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. Elevated heat gain compared to the body's release capability poses risks of dehydration and potential overheating.

Humidity

The average relative humidity in December is 76%.

Rainfall

December is the month with the most rainfall in Aracatu. Rain falls for 17.7 days and accumulates 102mm (4.02") of precipitation.

Daylight

With an average of 13h and 0min of daylight, December has the longest days of the year in Aracatu.
On the first day of the month, sunrise is at 05:07 and sunset at 18:02. On the last day of December, in Aracatu, sunrise is at 05:20 and sunset at 18:18 -03.

Sunshine

In December, the average sunshine is 9.3h.

UV index

In December, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A maximum UV index of 6 in December translates into the following recommendations:
Persist in precautions and follow sun safety policies. Keeping sunburn at bay is imperative. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.