December weather forecast
Jaú do Tocantins, Brazil

The first month of the summer, December, is still a tropical month in Jaú do Tocantins, Brazil, with an average temperature fluctuating between 22.1°C (71.8°F) and 30.8°C (87.4°F).

Temperature

A minor adjustment in Jaú do Tocantins's average high-temperature is noted with the start of December, touching a still hot 30.8°C (87.4°F) from November's 31.9°C (89.4°F). The month of December records an average low-temperature of 22.1°C (71.8°F) in Jaú do Tocantins.

Heat index

December's average heat index is computed to be a blistering 40°C (104°F). Take more preventive steps, risk of heat exhaustion and heat cramps is elevated. Long activity may culminate in heatstroke.
It is essential to grasp that the heat index's numbers are for shade and light wind settings. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'real feel' or 'feels like', is a measure of how hot it feels when the actual air humidity is factored in. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. With direct sunlight, be aware that it might enhance the heat sensation, raising the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.
Perspiring is how the human body naturally cools down, as sweat's evaporation takes away excess heat. Under conditions of high relative humidity, the rate of evaporation decreases. This results in the body retaining more heat than under conditions of dry air. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

In Jaú do Tocantins, the average relative humidity in December is 79%.

Rainfall

In December, the rain falls for 26.3 days. Throughout December, 145mm (5.71") of precipitation is accumulated. In Jaú do Tocantins, during the entire year, the rain falls for 185.7 days and collects up to 950mm (37.4") of precipitation.

Daylight

December has the longest days of the year, with an average of 12h and 54min of daylight.
On the first day of the month, sunrise is at 05:39 and sunset at 18:28. On the last day of December, sunrise is at 05:51 and sunset at 18:43 -03.

Sunshine

The average sunshine in December is 8.7h.

UV index

February through June, November and December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: The maximum UV index of 6 during December leads to these instructions:
Skirt overexposure. People with light complexions might get scorched in under 20 minutes. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.