December weather forecast
Passa-Vinte, Brazil

December, the first month of the summer in Passa-Vinte, is also a moderately hot month, with temperature in the range of an average high of 29°C (84.2°F) and an average low of 19°C (66.2°F).

Temperature

With the advent of December, Passa-Vinte experiences an average high-temperature of a still moderately hot 29°C (84.2°F), mirroring a close resemblance to the previous month. Passa-Vinte, in December, observes a steady average low-temperature of 19°C (66.2°F).

Heat index

December's heat index is estimated at a very hot 36°C (96.8°F). Ensure extra safety steps, heat exhaustion and heat cramps are likely. Long activity might lead to heatstroke.
The standards for the heat index are set for locations in shade and under light breezes. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. The individual's impression of temperature can be shaped by additional aspects such as metabolic variations, physical activity, and clothing. Recognize that direct exposure to the sun can escalate the heat effect, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are quite important for babies and toddlers. Young ones often do not realize the necessity to rest and replenish their fluids. Thirst is a delayed indication of dehydration - keeping hydrated, particularly in prolonged physical activity, is crucial.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. Excessive heat gain, when not shed effectively by the body, can result in increasing body temperatures and related hazards.

Humidity

The average relative humidity in December is 84%.

Rainfall

In Passa-Vinte, during December, the rain falls for 20.7 days and regularly aggregates up to 99mm (3.9") of precipitation. Throughout the year, there are 184.5 rainfall days, and 679mm (26.73") of precipitation is accumulated.

Daylight

December has the longest days of the year, with an average of 13h and 30min of daylight.
On the first day of the month, sunrise is at 05:04 and sunset at 18:28. On the last day of December, sunrise is at 05:16 and sunset at 18:44 -03.

Sunshine

In December, the average sunshine in Passa-Vinte, Brazil, is 7.6h.

UV index

January, February, August, October and December, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: In December, an average UV index of 6 transforms into the following instructions:
Employ safeguards and advocate sun safety protocols. Shielding against skin and eye damage is crucial. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.