December weather forecast
São João do Araguaia, Brazil

The first month of the summer, December, is also a hot month in São João do Araguaia, Brazil, with an average temperature ranging between max 31.8°C (89.2°F) and min 22.1°C (71.8°F).

Temperature

Transitioning into December, São João do Araguaia records an average high-temperature of a still hot 31.8°C (89.2°F), almost identical to November's 33.5°C (92.3°F). In December, São João do Araguaia experiences an average nighttime temperature of 22.1°C (71.8°F).

Heat index

During December, the heat index is calculated to be an extremely hot 44°C (111.2°F). Watchful: Heat cramps and heat exhaustion are predicted. Continued exertion could lead to heatstroke.
Heat index specifics point out values are for conditions of shade and a slight breeze. Being exposed to direct sunshine might trigger a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', combines both the air temperature and the humidity level to give a perceived human temperature. The influence of weather is personal, differing among a variety of individuals based on differences in body mass, stature, and the level of physical activity. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.
When the body gets too warm, it perspires, leading to sweat evaporation which cools it down. In high relative humidity, the body's ability to evaporate heat is diminished, resulting in a heightened feeling of warmth. The body faces dehydration threats when its cooling efforts are outpaced by excessive heat gain.

Humidity

The average relative humidity in December is 82%.

Rainfall

In December, in São João do Araguaia, the rain falls for 28 days. Throughout December, 176mm (6.93") of precipitation is accumulated. Throughout the year, there are 250.8 rainfall days, and 1478mm (58.19") of precipitation is accumulated.

Daylight

With an average of 12h and 24min of daylight, December has the longest days of the year.
On the first day of December in São João do Araguaia, sunrise is at 05:52 and sunset at 18:16. On the last day of the month, sunrise is at 06:05 and sunset at 18:31 -03.

Sunshine

In December, the average sunshine in São João do Araguaia is 7.8h.

UV index

January through April, November and December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index reading of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index, 6 in December, converts into the following recommendations:
Resist extreme sun exposure. Guarding against solar damage is essential. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.