December weather forecast
Porto da Folha, Brazil

The first month of the summer, December, is still a hot month in Porto da Folha, Brazil, with an average temperature varying between 22.3°C (72.1°F) and 33.8°C (92.8°F).

Temperature

Temperatures reach their maximum during March and December, recording an average high-temperature of 33.8°C (92.8°F).

Heat index

For most parts of December, the heat index is computed to be an extremely hot 42°C (107.6°F). Undertake special precautions, the probability of heat exhaustion and heat cramps is high. Prolonged activity may provoke heatstroke.
Heat index specifics point out values are for conditions of shade and a slight breeze. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is an amalgamation of air temperature and humidity to express the equivalent perceived temperature. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. Direct sunlight can potentially raise the heat index by 15 Fahrenheit (8 Celsius) degrees, so it's crucial to consider. Heat index values are particularly relevant to 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.
The body's innate mechanism to counteract overheating is through perspiration, as it leverages the cooling effects of sweat evaporation. 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. When body heat isn't effectively managed, risks of dehydration and overheating amplify.

Humidity

November and December, with an average relative humidity of 60%, are the least humid months.

Rainfall

In December, the rain falls for 5.8 days. Throughout December, 18mm (0.71") of precipitation is accumulated. In Porto da Folha, during the entire year, the rain falls for 130.4 days and collects up to 289mm (11.38") of precipitation.

Daylight

The month with the longest days is December, with an average of 12h and 42min of daylight.
On the first day of December, sunrise is at 04:58 and sunset at 17:38. On the last day of the month, sunrise is at 05:11 and sunset at 17:53 -03.

Sunshine

The average sunshine in December in Porto da Folha, Brazil, is 9h.

UV index

The months with the highest UV index in Porto da Folha are January through March, October through December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: In December, the maximum UV index of 7 transforms into these recommendations:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.