December weather forecast
Mata Grande, Brazil

The first month of the summer, December, is still a tropical month in Mata Grande, Brazil, with an average temperature varying between 22.9°C (73.2°F) and 34.5°C (94.1°F).

Temperature

November and December, when the average high-temperature reaches 34.5°C (94.1°F), are the warmest months.

Heat index

The heat index for December is evaluated at an extremely hot 42°C (107.6°F). Undertake additional safety actions, risk of heat cramps and heat exhaustion is significant. Persistent activity may induce heatstroke.
Records show heat index calculations are tailored for shaded regions and mild winds. 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 'feels like' or 'real feel', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. Always consider that direct sunlight exposure might heighten the heat's effects, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Young people are generally more susceptible than adults because they perspire less. Furthermore, their proportionally larger skin surface to their petite bodies and the increased heat output from their actions add to the risk.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. Higher relative humidity impedes evaporation, thus reducing heat dispersion 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

In Mata Grande, Brazil, the average relative humidity in December is 57%.

Rainfall

In Mata Grande, during December, the rain falls for 7.7 days and regularly aggregates up to 26mm (1.02") of precipitation. Throughout the year, in Mata Grande, there are 125 rainfall days, and 272mm (10.71") of precipitation is accumulated.

Daylight

The month with the longest days is December, with an average of 12h and 36min of daylight.
On the first day of the month, sunrise is at 05:01 and sunset at 17:38. On the last day of December, sunrise is at 05:14 and sunset at 17:53 -03.

Sunshine

In Mata Grande, the average sunshine in December is 8.7h.

UV index

January through March, September through December, with an average maximum UV index of 7, are months with the highest UV index in Mata Grande, Brazil. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for the average person.
Note: In December, the maximum UV index of 7 suggests this advice:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.