December weather forecast
Jaboatão, Brazil

The first month of the summer, December, is still a warm month in Jaboatão, Brazil, with temperature in the range of an average low of 24.5°C (76.1°F) and an average high of 29.6°C (85.3°F).

Temperature

December's commencement is accompanied by an average high-temperature of a still moderately hot 29.6°C (85.3°F), diverging marginally from November's 29.3°C (84.7°F). The average temperature during December nights dips to a still moderately hot 24.5°C (76.1°F).

Heat index

In December, the average heat index is computed to be a sweltering 35°C (95°F). Exercise increased caution, heat cramps and heat exhaustion are potential hazards. Continuous activity could lead to heatstroke.
The heat index's values are generally associated with conditions in shade and light breezes. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. One's exposure to direct sunlight has the potential to intensify the heat sensation, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.
Perspiring is how the human body naturally cools down, as sweat's evaporation takes away excess heat. When there is an excess of moisture in the atmosphere, the efficiency of the evaporation process is lessened, leading to less efficient body cooling and a sensation of overheating. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.

Humidity

November and December, with an average relative humidity of 73%, are the least humid months.

Rainfall

In Jaboatão, during December, the rain falls for 20.5 days and regularly aggregates up to 32mm (1.26") of precipitation. Throughout the year, there are 263.4 rainfall days, and 714mm (28.11") of precipitation is accumulated.

Snowfall

In Jaboatão, snow does not fall in January through August, October through December.

Sea temperature

In Jaboatão, the average seawater temperature in December is 27.6°C (81.7°F).
Note: For engaging in water activities including swimming and diving, temperatures from 25°C (77°F) to 29°C (84.2°F) are perceived as perfect, providing pleasure for extended durations.

Daylight

The month with the longest days is December, with an average of 12h and 36min of daylight.
On the first day of the month, sunrise is at 04:52 and sunset at 17:26. On the last day of December, sunrise is at 05:05 and sunset at 17:40 -03.

Sunshine

In December, the average sunshine is 7.7h.

UV index

January through March, May, October through December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the average person.
Note: In December, a daily maximum UV index of 7 leads to the following instructions:
Uphold preventive measures and conform to sun safety guidelines. Defending against skin and eye harm is crucial. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Stay vigilant! UV rays get a boost in intensity due to sand and water reflections.