December weather forecastRoca Sales, Brazil

Weather in December

December, the first month of the summer in Roca Sales, is also a moderately hot month, with an average temperature ranging between max 29.2°C (84.6°F) and min 17.5°C (63.5°F).

Temperature

The onset of December notes an average high-temperature of a still moderately hot 29.2°C (84.6°F), subtly shifted from November's 26.5°C (79.7°F). Roca Sales witnesses a consistent average low-temperature of 17.5°C (63.5°F) throughout December.

Heat index

The heat index in December is evaluated at a very hot 35°C (95°F). Undertake special precautions, the probability of heat exhaustion and heat cramps is high. Prolonged activity may provoke heatstroke.
Heat index data is primarily for areas with shade and subjected to light winds. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', combines both the air temperature and the humidity level to give a perceived human temperature. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. 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. Children often overlook the necessity for resting and fluid replenishment. Thirst is a late sign of dehydration - thus, it is critical to stay hydrated, especially during extended periods of physical activities.
To cool down, the human body relies on perspiration, a process where excessive heat is eliminated as sweat evaporates. 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. Accumulating heat beyond the body's cooling measures leads to rising temperatures and potential ailments.

Humidity

December is the least humid month, with an average relative humidity of 77%.

Rainfall

In December, in Roca Sales, the rain falls for 16.5 days. Throughout December, 70mm (2.76") of precipitation is accumulated. In Roca Sales, Brazil, during the entire year, the rain falls for 169.4 days and collects up to 977mm (38.46") of precipitation.

Daylight

The month with the longest days in Roca Sales is December, with an average of 14h and 0min of daylight.
On the first day of December, sunrise is at 05:20 and sunset at 19:13. On the last day of the month, sunrise is at 05:31 and sunset at 19:30 -03.

Sunshine

The month with the most sunshine is December, with an average of 8.5h of sunshine.

UV index

The months with the highest UV index are January through March, November 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 rays for the ordinary person.
Note: In December, the average maximum UV index of 6 translates into the following recommendations:
Resist overexposure. Safeguarding from solar damage is indispensable. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.