December weather forecast
Pederneiras, Brazil

December, the first month of the summer in Pederneiras, is also a moderately hot month, with an average temperature varying between 29.2°C (84.6°F) and 19.7°C (67.5°F).

Temperature

December is marked by an average high-temperature of a still moderately hot 29.2°C (84.6°F), almost identical to the preceding month. In Pederneiras, the average low-temperature during the month of December is a refreshing 19.7°C (67.5°F).

Heat index

December's heat index is computed to be a torrid 35°C (95°F). More safety actions are required, heat exhaustion and heat cramps are probable. Long-term activity may precipitate heatstroke.
Factoring in the heat index, values are geared towards shaded areas with light breezes. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', evaluates the perceived heat by adding the effect of moisture in the air. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. Under direct sun rays, the felt temperature might be heightened, with the heat index increasing by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Children frequently do not understand the need for recuperation and hydration. Thirst, being a late manifestation of dehydration, underlines the need to hydrate frequently, especially when engaging in prolonged physical exercises.
The evaporation of sweat is a natural cooling mechanism of the human body, facilitated by perspiration. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. Rising body temperatures due to excess heat retention could signify impending heat disorders.

Humidity

In December, the average relative humidity in Pederneiras is 80%.

Rainfall

In December, in Pederneiras, the rain falls for 25.5 days. Throughout December, 161mm (6.34") of precipitation is accumulated. Throughout the year, in Pederneiras, there are 192.9 rainfall days, and 1119mm (44.06") of precipitation is accumulated.

Daylight

December has the longest days of the year in Pederneiras, with an average of 13h and 30min of daylight.
On the first day of the month, sunrise is at 05:22 and sunset at 18:46. On the last day of December, in Pederneiras, sunrise is at 05:34 and sunset at 19:02 -03.

Sunshine

The average sunshine in December in Pederneiras is 7.9h.

UV index

The months with the highest UV index are January, March, August through December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for average individuals.
Note: The maximum UV index, 6 during December, leads to the following recommendations:
Resist extreme sun exposure. Guarding against solar damage is essential. 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. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.