December weather forecast
São João da Ponta, Brazil

The first month of the summer, December, is also a hot month in São João da Ponta, Brazil, with an average temperature varying between 30.5°C (86.9°F) and 24.9°C (76.8°F).

Temperature

At the onset of December, São João da Ponta records an average high-temperature of a still hot 30.5°C (86.9°F), showing little deviation from the preceding month. São João da Ponta, during the month of December, experiences an average low-temperature of 24.9°C (76.8°F).

Heat index

Throughout December, the heat index is computed to be a sweltering 39°C (102.2°F). Undertake enhanced precautions, heat exhaustion and heat cramps are possible risks. Continuous activity could trigger heatstroke.
Consider that heat index readings are for situations in the shade and light wind. 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 'apparent temperature' or 'felt air temperature', is a metric representing the sensation of warmth when air temperature and moisture come together. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. 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 highly important for children. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. An increase in relative humidity hinders the body's normal cooling function by reducing evaporation, thereby decreasing the rate of body cooling and enhancing the sense of warmth. Rising body temperatures due to excess heat retention could signify impending heat disorders.

Humidity

The average relative humidity in December in São João da Ponta is 78%.

Rainfall

In São João da Ponta, Brazil, during December, the rain falls for 24.7 days and regularly aggregates up to 172mm (6.77") of precipitation. In São João da Ponta, during the entire year, the rain falls for 315.6 days and collects up to 2313mm (91.06") of precipitation.

Daylight

December has the longest days of the year, with an average of 12h and 12min of daylight.
On the first day of the month, sunrise is at 05:55 and sunset at 18:06. On the last day of December, in São João da Ponta, sunrise is at 06:09 and sunset at 18:20 -03.

Sunshine

The average sunshine in December is 8.3h.

UV index

The months with the highest UV index are January, June through December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the average person.
Note: An average UV index of 7 in December transforms into this advice:
Ward off overexposure. Defence against solar harm is crucial. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.