December weather forecast
Itaíba, Brazil

The first month of the summer, December, is still a hot month in Itaíba, Brazil, with an average temperature varying between 33°C (91.4°F) and 21.6°C (70.9°F).

Temperature

December's presence records an average high-temperature of a still hot 33°C (91.4°F), closely mirroring November's climate. December nights in Itaíba are marked by an average low-temperature of 21.6°C (70.9°F).

Heat index

In December, the heat index is estimated at an extremely hot 40°C (104°F). Incorporate additional preventive steps, heat exhaustion and heat cramps are possible. Long-lasting activity may cause heatstroke.
The heat index's values are generally associated with conditions in shade and light breezes. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'feels like', combines air temperature and relative humidity to represent a human perceived temperature equivalent. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. When directly under the sun, the weather's impact can intensify, possibly boosting the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. Increased relative humidity interferes with body cooling by slowing the rate of evaporation, resulting in a slower body cooling rate and a heightened feeling of heat. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.

Humidity

November and December, with an average relative humidity of 60%, are the least humid months.

Rainfall

In Itaíba, Brazil, in December, it is raining for 6.5 days, with typically 20mm (0.79") of accumulated precipitation. In Itaíba, during the entire year, the rain falls for 140.8 days and collects up to 313mm (12.32") of precipitation.

Daylight

With an average of 12h and 36min of daylight, December has the longest days of the year.
On the first day of December in Itaíba, sunrise is at 05:00 and sunset at 17:37. On the last day of the month, sunrise is at 05:13 and sunset at 17:52 -03.

Sunshine

In December, the average sunshine is 9.2h.

UV index

The months with the highest UV index are January through March, October through December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum UV index, 7 during December, leads to the following recommendations:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.