December weather forecast
Rodelas, Brazil

December, the first month of the summer in Rodelas, is also a hot month, with temperature in the range of an average high of 33.6°C (92.5°F) and an average low of 22.7°C (72.9°F).

Temperature

The arrival of December sees a recorded average high-temperature of a still tropical 33.6°C (92.5°F), showing little divergence from the previous month's conditions. Rodelas experiences a steady low-temperature of 22.7°C (72.9°F) throughout December.

Heat index

The heat index value for December is estimated at a torrid 39°C (102.2°F). Undertake enhanced precautions, heat exhaustion and heat cramps are possible risks. Continuous activity could trigger heatstroke.
For clarity, heat index numbers account for light winds and areas under shade. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', blends air temperature and moisture content to represent the felt temperature to humans. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Youngsters frequently overlook the need for breaks and fluid intake. Thirst is an advanced sign of dehydration - thereby highlighting the importance of keeping hydrated, particularly during long physical activities.
Perspiration, which is the evaporation of sweat, is a primary way the human body manages and dispels excessive warmth. When air moisture content is high, the cooling process through evaporation is not as efficient, leading to an ineffective body cooling process and a feeling of overheating. Heat disorders may be on the horizon when body temperatures rise from inadequate heat management.

Humidity

The average relative humidity in December is 55%.

Rainfall

In Rodelas, in December, during 9.3 rainfall days, 36mm (1.42") of precipitation is typically accumulated. Throughout the year, in Rodelas, there are 132.1 rainfall days, and 324mm (12.76") of precipitation is accumulated.

Daylight

With an average of 12h and 36min of daylight, December has the longest days of the year.
On the first day of the month, sunrise is at 05:06 and sunset at 17:42. On the last day of December, sunrise is at 05:19 and sunset at 17:57 -03.

Sunshine

In Rodelas, Brazil, the average sunshine in December is 9h.

UV index

January through March, September 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 threat to health from exposure to the Sun's UV radiation for the average person.
Note: In December, the maximum UV index of 7 suggests this advice:
Prevent overexposure. Protection from the sun's harmful effects is needed. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.