December weather forecast
Pires Ferreira, Brazil

The first month of the summer, December, is still a tropical month in Pires Ferreira, Brazil, with an average temperature varying between 22.6°C (72.7°F) and 33.2°C (91.8°F).

Temperature

Pires Ferreira observes a minor difference in average high-temperatures between November's 34.6°C (94.3°F) and December's 33.2°C (91.8°F). December nights in Pires Ferreira are marked by an average temperature drop to a pleasant 22.6°C (72.7°F).

Heat index

December's heat index is estimated at a scorching 40°C (104°F). Additional precautions are required to avert heat cramps and heat exhaustion. Persistent activity may culminate in heatstroke.
It is important to note that the heat index values are for shaded areas and light wind scenarios. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'feels like', marries air temperature and humidity to produce a value illustrating perceived warmth. The impression of weather on a person can be swayed by additional aspects, including metabolic variations, pregnancy, and activity levels. 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 great significance to children. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.
As a reaction to high temperatures, the human body begins to perspire, using the evaporation of sweat to lower its temperature. 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. If heat absorption exceeds the body's cooling ability, body temperature can elevate, resulting in potential thermal illnesses.

Humidity

In December, the average relative humidity in Pires Ferreira is 60%.

Rainfall

In December, in Pires Ferreira, the rain falls for 11.4 days. Throughout December, 50mm (1.97") of precipitation is accumulated. In Pires Ferreira, during the entire year, the rain falls for 184 days and collects up to 817mm (32.17") of precipitation.

Daylight

With an average of 12h and 24min of daylight, December has the longest days of the year.
On the first day of December, sunrise is at 05:21 and sunset at 17:42. On the last day of the month, sunrise is at 05:34 and sunset at 17:56 -03.

Sunshine

In December, the average sunshine is 8.3h.

UV index

July through December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the average person.
Note: A maximum daily UV index of 7 during December morphs into the following directions:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. A hat with a broad brim is indispensable, filtering out up to half of UV rays.