December weather forecast
Itacajá, Brazil

The first month of the summer, December, is still a tropical month in Itacajá, Brazil, with an average temperature varying between 31°C (87.8°F) and 22.6°C (72.7°F).

Temperature

December's average high-temperature is a still hot 31°C (87.8°F), maintaining a close comparison with November's 32.3°C (90.1°F). In December, the nighttime temperature lowers to an average of 22.6°C (72.7°F).

Heat index

For December, the heat index is computed to be a blisteringly hot 40°C (104°F). Emphasize additional safety, risk of heat cramps and heat exhaustion is high. Continuous activity might result in heatstroke.
The heat index's values are generally associated with conditions in shade and light breezes. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. 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.
To offset high temperatures, the human body releases sweat which, upon evaporation, cools it down. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. Overheating dangers loom when the body's heat release mechanisms are overshadowed by excessive gain.

Humidity

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

Rainfall

In Itacajá, in December, it is raining for 27.9 days, with typically 133mm (5.24") of accumulated precipitation. In Itacajá, during the entire year, the rain falls for 220.5 days and collects up to 1134mm (44.65") of precipitation.

Daylight

December has the longest days of the year, with an average of 12h and 36min of daylight.
On the first day of the month, sunrise is at 05:42 and sunset at 18:17. On the last day of December, sunrise is at 05:56 and sunset at 18:32 -03.

Sunshine

In Itacajá, the average sunshine in December is 8.9h.

UV index

The months with the lowest UV index in Itacajá are January, April and December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum UV index of 6 during December leads to these instructions:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.