December weather forecast
Ubajara, Brazil

December, the first month of the summer in Ubajara, is still a tropical month, with temperature in the range of an average high of 32°C (89.6°F) and an average low of 21.8°C (71.2°F).

Temperature

In December, the average high-temperature registers at a still tropical 32°C (89.6°F), nearly identical to November's 33.5°C (92.3°F). Throughout December, Ubajara witnesses a consistent average low-temperature of 21.8°C (71.2°F).

Heat index

During December, the heat index is calculated to be a torrid 39°C (102.2°F). Undertake enhanced precautions, heat exhaustion and heat cramps are possible risks. Continuous activity could trigger heatstroke.
In the scope of the heat index, its values resonate with shade and light wind conditions. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', binds temperature metrics with humidity values to give a sense of the actual warmth. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Youngsters are usually more at risk than adults, considering they sweat less. Additionally, their high skin surface area compared to their little bodies and their high heat production due to activity increases their risk.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. When heat uptake goes beyond the body's cooling mechanisms, there's a surge in body temperature, posing health risks.

Humidity

The average relative humidity in December is 67%.

Rainfall

In December, the rain falls for 16.5 days. Throughout December, 64mm (2.52") of precipitation is accumulated. In Ubajara, during the entire year, the rain falls for 197.8 days and collects up to 1036mm (40.79") of precipitation.

Daylight

December has the longest days of the year in Ubajara, Brazil, with an average of 12h and 18min of daylight.
On the first day of the month, sunrise is at 05:23 and sunset at 17:42. On the last day of December, sunrise is at 05:36 and sunset at 17:57 -03.

Sunshine

The average sunshine in December in Ubajara is 8.2h.

UV index

August through December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for the average person.
Note: The maximum daily UV index of 7 in December converts into the following recommendations:
Skirt overexposure. People with light complexions might get scorched in under 20 minutes. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. A hat with a broad brim is indispensable, filtering out up to half of UV rays.