December weather forecast
Guarabira, Brazil

December, the first month of the summer in Guarabira, is still a tropical month, with an average temperature ranging between min 22.6°C (72.7°F) and max 31.5°C (88.7°F).

Temperature

December's commencement is accompanied by an average high-temperature of a still tropical 31.5°C (88.7°F), diverging marginally from November's 31.3°C (88.3°F). In Guarabira, an average nighttime temperature of 22.6°C (72.7°F) is expected during December.

Heat index

During December, the heat index is computed to be a blistering 40°C (104°F). Adopt enhanced safety measures, heat exhaustion and heat cramps could occur. Continuous activity may induce heatstroke.
Know that the heat index computations account for shaded terrains and slight winds. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'feels like' or 'felt air temperature', arises from combining readings of air temperature and relative moisture content. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values hold particular significance for children. Children often overlook the necessity for resting and fluid replenishment. Thirst is a late sign of dehydration - thus, it is critical to stay hydrated, especially during extended periods of physical activities.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. Under conditions of increased relative humidity, the evaporation rate lessens, causing the body to retain more heat than under less humid conditions. Heat-related challenges, like dehydration, can be anticipated when body heat isn't managed effectively.

Humidity

In December, the average relative humidity is 72%.

Rainfall

In December, the rain falls for 14.1 days. Throughout December, 16mm (0.63") of precipitation is accumulated. Throughout the year, there are 205.7 rainfall days, and 444mm (17.48") of precipitation is accumulated.

Daylight

December has the longest days of the year, with an average of 12h and 30min of daylight.
On the first day of December in Guarabira, sunrise is at 04:56 and sunset at 17:26. On the last day of the month, sunrise is at 05:09 and sunset at 17:40 -03.

Sunshine

In Guarabira, the average sunshine in December is 6.4h.

UV index

March through September, November and December, with an average maximum UV index of 6, are months with the lowest UV index in Guarabira. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum UV index of 6 during December leads to these instructions:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.