December weather forecastAreial, Brazil

Weather in December

December, the first month of the summer in Areial, is still a hot month, with an average temperature ranging between min 21.3°C (70.3°F) and max 30.7°C (87.3°F).

Temperature

December's commencement is accompanied by an average high-temperature of a still hot 30.7°C (87.3°F), diverging marginally from November's 30.5°C (86.9°F). During December, Areial sees a mean low-temperature of 21.3°C (70.3°F).

Heat index

For December, the heat index is estimated at a sweltering 37°C (98.6°F). Ensure extra safety measures, heat exhaustion and heat cramps are likely. Continuous activity might result in heatstroke.
Heat index details are generally centered around shaded locations and a mild breeze. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. Awareness of direct sun exposure is crucial as it has the potential to heighten the weather's effects, pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Children often overlook the necessity for resting and fluid replenishment. Thirst is a late sign of dehydration - thus, it is critical to stay hydrated, especially during extended periods of physical activities.
The natural method the human body uses to remove excess heat is by perspiring and letting sweat evaporate. Increased relative humidity slows down evaporation, thereby decreasing the rate of heat removal from the body, culminating in a sensation of overheating. Exceeding the body's heat disposal threshold results in a rise in body temperature and potential thermal disorders.

Humidity

The months with the lowest humidity are November and December, with an average relative humidity of 71%.

Rainfall

In December, the rain falls for 15.3 days. Throughout December, 20mm (0.79") of precipitation is accumulated. In Areial, during the entire year, the rain falls for 212.6 days and collects up to 486mm (19.13") of precipitation.

Daylight

December has the longest days of the year in Areial, Brazil, with an average of 12h and 30min of daylight.
On the first day of the month, sunrise is at 04:57 and sunset at 17:28. On the last day of December, in Areial, Brazil, sunrise is at 05:11 and sunset at 17:42 -03.

Sunshine

In December, the average sunshine is 6.9h.

UV index

January through June, August through December, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: An average maximum UV index of 6 in December leads to these recommendations:
Resist overexposure. Safeguarding from solar damage is indispensable. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.