December weather forecastPiacatu, Brazil

Weather in December

December, the first month of the summer in Piacatu, is also a moderately hot month, with an average temperature fluctuating between 20.7°C (69.3°F) and 29.6°C (85.3°F).

Temperature

The start of December sees the average high-temperature at a moderately hot 29.6°C (85.3°F), showing little difference from November's 30.2°C (86.4°F). During December, the temperature in Piacatu tends to dip to an average of 20.7°C (69.3°F) at night.

Heat index

For December, the heat index is estimated at a very hot 36°C (96.8°F). Adopt heightened safety measures, heat cramps and heat exhaustion may occur. Sustained activity might cause heatstroke.
It is crucial to understand that heat index figures are for shade and gentle wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is a measure of how hot it feels when the actual air humidity is factored in. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. 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 of high significance 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.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. An increase in relative humidity retards evaporation, subsequently reducing the body's heat removal rate and leading to a sensation of being overly warm. The body is at risk of dehydration and related complications when it fails to shed excessive heat.

Humidity

In Piacatu, the average relative humidity in December is 79%.

Rainfall

In Piacatu, Brazil, in December, during 25.5 rainfall days, 160mm (6.3") of precipitation is typically accumulated. In Piacatu, during the entire year, the rain falls for 193.5 days and collects up to 1136mm (44.72") of precipitation.

Daylight

With an average of 13h and 24min of daylight, December has the longest days of the year.
On the first day of December in Piacatu, sunrise is at 05:30 and sunset at 18:52. On the last day of the month, sunrise is at 05:42 and sunset at 19:08 -03.

Sunshine

In December, the average sunshine in Piacatu, Brazil, is 7.7h.

UV index

January through March, July through December, with an average maximum UV index of 6, are months with the highest UV index in Piacatu, Brazil. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the average person.
Note: The average daily UV index of 6 in December transforms into the following instructions:
Fend off overexposure. Sun protection is vital. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.