December weather forecast
João Pessoa, Brazil

Wrapping up the year, December in João Pessoa, Brazil, sees the highest temperatures, ranging from 23.9°C (75°F) in the night to up to 30°C (86°F) during the day. While rainfall sees a marginal increase, the humidity remains steady at 74%, similar to previous months. Despite the shortening daylight hours, the city remains lively with abundant sunshine. The sea temperature also exhibits a slight rise, ending the year on a warm note.

Temperature

João Pessoa's average high-temperature marks a hot 30°C (86°F) with the advent of December, closely mirroring that of the preceding month. December's nights observe an average temperature of 23.9°C (75°F).

Heat index

The average heat index in December is evaluated at a fiery hot 36°C (96.8°F). Heightened safety actions are necessary, heat cramps and heat exhaustion are probable. Persistent activity may lead to heatstroke.
It is worth noting that heat index values are gauged for conditions in the shade and light breezes. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', arises from combining readings of air temperature and relative moisture content. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. Recognize that direct exposure to the sun can escalate the heat effect, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are largely significant for babies and toddlers. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.
Perspiration is essential for the human body; it facilitates cooling through the process of sweat evaporation. In the presence of abundant moisture in the atmosphere, the cooling process through evaporation is hindered, causing the body to feel excessively warm. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.

Humidity

In December, the average relative humidity in João Pessoa is 74%.

Rainfall

In December, in João Pessoa, the rain falls for 5 days. Throughout December, 29mm (1.14") of precipitation is accumulated. Throughout the year, there are 149 rainfall days, and 2145mm (84.45") of precipitation is accumulated.

Sea temperature

In João Pessoa, the average seawater temperature in December is 27.7°C (81.9°F).
Note: For engaging in any water activities, temperatures from 25°C (77°F) to 29°C (84.2°F) are viewed as outstanding and exceptionally pleasing for prolonged durations.

Daylight

The month with the longest days is December, with an average of 12h and 30min of daylight.
On the first day of the month, sunrise is at 04:53 and sunset at 17:23. On the last day of December, sunrise is at 05:06 and sunset at 17:38 -03.

Sunshine

In João Pessoa, the average sunshine in December is 8.8h.