December weather forecast
Volta Redonda, Brazil

December, the first month of the summer in Volta Redonda, is still a warm month, with an average temperature fluctuating between 19.3°C (66.7°F) and 28.7°C (83.7°F).

Temperature

Volta Redonda marks the arrival of December with an average high-temperature of a still warm 28.7°C (83.7°F), hardly different from November's 26.9°C (80.4°F). December in Volta Redonda sees the temperature falling to a mean low of 19.3°C (66.7°F).

Heat index

The average heat index in December is calculated to be a torrid 35°C (95°F). More preventive actions are needed, risk of heat exhaustion and heat cramps is significant. Prolonged activity may trigger heatstroke.
Bear in mind that the heat index values are determined for shaded areas and light breezes. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. Realize that direct exposure to sunlight can augment the felt heat, leading to a potential increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
Evaporation of sweat is the main factor behind the cooling effect of perspiration in the human body. With higher relative humidity, the rate of evaporation is reduced, resulting in increased heat retention in the body compared to drier air. When the heat gained surpasses the body's cooling capacity, temperatures rise, signaling potential health concerns.

Humidity

The average relative humidity in December is 84%.

Rainfall

In Volta Redonda, in December, it is raining for 26.4 days, with typically 158mm (6.22") of accumulated precipitation. Throughout the year, in Volta Redonda, there are 217.8 rainfall days, and 982mm (38.66") of precipitation is accumulated.

Daylight

With an average of 13h and 30min of daylight, December has the longest days of the year.
On the first day of December in Volta Redonda, sunrise is at 05:03 and sunset at 18:28. On the last day of the month, sunrise is at 05:14 and sunset at 18:44 -03.

Sunshine

In Volta Redonda, the average sunshine in December is 7.7h.

UV index

The months with the highest UV index are January through March, August, October and December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: A maximum daily UV index of 6 during December morphs into the following directions:
Resist extreme sun exposure. Guarding against solar damage is essential. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.