December weather forecastJaciara, Brazil

Weather in December

The first month of the summer, December, is still a hot month in Jaciara, Brazil, with an average temperature ranging between min 21.5°C (70.7°F) and max 30.6°C (87.1°F).

Temperature

December's arrival brings an average high-temperature of a still tropical 30.6°C (87.1°F), demonstrating subtle variation from the preceding month. An average nighttime temperature of 21.5°C (70.7°F) is observed during December.

Heat index

The heat index value during December is computed to be a blistering 40°C (104°F). Implement additional cautionary measures, heat cramps and heat exhaustion could occur. Prolonged activity might induce heatstroke.
Consider that heat index readings are for situations in the shade and light wind. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', combines both the air temperature and the humidity level to give a perceived human temperature. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. 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 hold particular importance for children. Young ones generally face higher dangers than adults since they sweat less. Along with their large skin surface area compared totheir small bodies and increased heat production from their activities, the risks are heightened.
For the human body, perspiration is the go-to method to regulate temperature, using sweat's evaporation to dissipate warmth. With high air temperature and humidity (high heat index) conditions, sweat production is restricted, leading to an amplified perception of heat. Temperature imbalances caused by excessive heat retention can trigger heat-related maladies.

Humidity

In Jaciara, Brazil, the average relative humidity in December is 81%.

Rainfall

In Jaciara, during December, the rain falls for 24.5 days and regularly aggregates up to 116mm (4.57") of precipitation. In Jaciara, during the entire year, the rain falls for 180 days and collects up to 830mm (32.68") of precipitation.

Daylight

With an average of 13h and 6min of daylight, December has the longest days of the year.
On the first day of December in Jaciara, sunrise is at 04:58 and sunset at 17:59. On the last day of the month, sunrise is at 05:11 and sunset at 18:14 -04.

Sunshine

In December, the average sunshine is 8.5h.

UV index

The months with the lowest UV index are January through July and December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: A maximum daily UV index of 6 during December morphs into the following directions:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.