December weather forecastVertentes, Brazil

Weather in December

The first month of the summer, December, is also a hot month in Vertentes, Brazil, with an average temperature fluctuating between 30.3°C (86.5°F) and 20.9°C (69.6°F).

Temperature

The high-temperature during December, registering at a still tropical 30.3°C (86.5°F), holds the same measure as the previous month. The average temperature in Vertentes drops to a pleasant 20.9°C (69.6°F) during the night in the month of December.

Heat index

The heat index in December is calculated to be a very hot 36°C (96.8°F). Exercise increased caution, heat cramps and heat exhaustion are potential hazards. Continuous activity could lead to heatstroke.
Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. Direct sunlight exposure may cause a 15 Fahrenheit (8 Celsius) degrees rise in the heat index.
Note: The heat index, also known as 'apparent temperature' or 'feels like', arises from combining readings of air temperature and relative moisture content. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. 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 are particularly meaningful for babies and toddlers. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.
In high temperatures, perspiration kicks in, allowing the human body to cool down through the evaporation of sweat. When the level of relative humidity is elevated, evaporation diminishes, causing more warmth to be retained in the body than in dry air. Rising body temperatures due to excess heat retention could signify impending heat disorders.

Humidity

November and December, with an average relative humidity of 69%, are the least humid months in Vertentes.

Rainfall

In Vertentes, in December, it is raining for 12.5 days, with typically 14mm (0.55") of accumulated precipitation. Throughout the year, in Vertentes, there are 172.4 rainfall days, and 367mm (14.45") of precipitation is accumulated.

Daylight

With an average of 12h and 36min of daylight, December has the longest days of the year in Vertentes.
On the first day of December, sunrise is at 04:56 and sunset at 17:29. On the last day of the month, sunrise is at 05:09 and sunset at 17:44 -03.

Sunshine

The average sunshine in December is 7.6h.

UV index

January through December, with an average maximum UV index of 6, are months with the highest UV index in Vertentes. January through December, with an average maximum UV index of 6, are months with the lowest UV index in Vertentes. A UV Index estimate of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for average individuals.
Note: In December, the maximum UV index of 6 suggests these recommendations:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.