December weather forecast
Regente Feijó, Brazil

The first month of the summer, December, is still a hot month in Regente Feijó, Brazil, with temperature in the range of an average high of 30°C (86°F) and an average low of 21.3°C (70.3°F).

Temperature

December's onset brings an average high-temperature of a still tropical 30°C (86°F), showing a minute difference from November's 30.5°C (86.9°F). Throughout the nights in December, Regente Feijó experiences an average low-temperature of 21.3°C (70.3°F).

Heat index

December's mean heat index is appraised at a fiery hot 37°C (98.6°F). Use additional protective measures, heat cramps and heat exhaustion are possible outcomes. Continuous activity might lead to heatstroke.
Data suggests that the heat index is set for environments in shade and with a light wind. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', combines air temperature and relative humidity to represent a human perceived temperature equivalent. The individual's impression of temperature can be shaped by additional aspects such as metabolic variations, physical activity, and clothing. Direct sun exposure is noteworthy in its ability to escalate the felt temperature, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are primarily vital for children. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. When there is abundant moisture in the air, the body's cooling through the evaporation process becomes less effective, leading to the sensation of overheating. As the body gains more heat than it can dissipate, there's a risk of increasing temperatures and resultant overheating.

Humidity

In Regente Feijó, the average relative humidity in December is 78%.

Rainfall

In Regente Feijó, in December, during 25.8 rainfall days, 168mm (6.61") of precipitation is typically accumulated. Throughout the year, in Regente Feijó, there are 196.8 rainfall days, and 1260mm (49.61") of precipitation is accumulated.

Daylight

December has the longest days of the year in Regente Feijó, with an average of 13h and 30min of daylight.
On the first day of the month, sunrise is at 05:32 and sunset at 18:56. On the last day of December, sunrise is at 05:44 and sunset at 19:12 -03.

Sunshine

The average sunshine in December is 7.8h.

UV index

January through March, June through December, with an average maximum UV index of 6, are months with the highest UV index in Regente Feijó. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for the average person.
Note: In December, a daily maximum UV index of 6 leads to the following instructions:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. Tightly woven clothing, when worn loosely, shields effectively against the Sun.