December weather forecast
Matias Olímpio, Brazil

The first month of the summer, December, is still a hot month in Matias Olímpio, Brazil, with an average temperature fluctuating between 34.5°C (94.1°F) and 24°C (75.2°F).

Temperature

As Matias Olímpio, Brazil, steps into December, the average high-temperature is measured at a hot 34.5°C (94.1°F), displaying minor differences from November's 36.8°C (98.2°F). During December nights, Matias Olímpio records an average temperature of 24°C (75.2°F).

Heat index

The heat index for December is computed to be a burning hot 47°C (116.6°F). Alert: Heat cramps and heat exhaustion are likely to occur. Prolonged exertion can lead to heatstroke.
It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is achieved by amalgamating air temperature with the relative humidity readings. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. 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 of high significance for children. Young ones are generally more prone to risk than adults due to their reduced ability to sweat. Their large skin surface area relative to their diminutive bodies and elevated heat production from their activities further enhance this risk.
Perspiration is essential for the human body; it facilitates cooling through the process of sweat evaporation. Relative humidity in excess curtails evaporation, therefore reducing heat dissipation from the body, leading to feelings of excess heat. Heat-related complications, like dehydration, can manifest if the body's heat gain exceeds its dissipation capacity.

Humidity

In December, the average relative humidity is 68%.

Rainfall

In Matias Olímpio, during December, the rain falls for 18.2 days and regularly aggregates up to 78mm (3.07") of precipitation. In Matias Olímpio, during the entire year, the rain falls for 221.9 days and collects up to 1140mm (44.88") of precipitation.

Daylight

With an average of 12h and 18min of daylight, December has the longest days of the year.
On the first day of the month, sunrise is at 05:29 and sunset at 17:49. On the last day of December, in Matias Olímpio, sunrise is at 05:43 and sunset at 18:03 -03.

Sunshine

In Matias Olímpio, the average sunshine in December is 8.6h.

UV index

January, April through December, with an average maximum UV index of 7, are months with the highest UV index in Matias Olímpio. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: A daily high UV index of 7 in December leads to these guidelines:
Deflect overexposure. Sun protection is a necessity. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.