December weather forecast
José da Penha, Brazil

December, the first month of the summer in José da Penha, is still a tropical month, with an average temperature ranging between min 23.3°C (73.9°F) and max 34°C (93.2°F).

Temperature

A minor adjustment in José da Penha's average high-temperature is noted with the start of December, touching a still tropical 34°C (93.2°F) from November's 34.5°C (94.1°F). José da Penha observes an average low-temperature of 23.3°C (73.9°F) during December nights.

Heat index

For December, the heat index is computed to be a very hot 39°C (102.2°F). More preventive actions are needed, risk of heat exhaustion and heat cramps is significant. Prolonged activity may trigger heatstroke.
Heat index details are generally centered around shaded locations and a mild breeze. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', takes into account both air temperature and humidity to illustrate what people actually feel. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Children frequently do not comprehend the need for rest and hydration. Thirst is an advanced stage of dehydration - staying hydrated, especially during extended physical exercises, is essential.
The natural method the human body uses to remove excess heat is by perspiring and letting sweat evaporate. Excessive relative humidity disturbs the body's typical cooling process by reducing evaporation, leading to a decrease in body cooling rate and an increase in the sensation of warmth. Heat-related disorders may develop if heat gain in the body overshadows its cooling capacity, leading to elevated temperatures.

Humidity

In José da Penha, Brazil, the average relative humidity in December is 52%.

Rainfall

In José da Penha, during December, the rain falls for 12.2 days and regularly aggregates up to 35mm (1.38") of precipitation. Throughout the year, there are 161.9 rainfall days, and 582mm (22.91") of precipitation is accumulated.

Daylight

December has the longest days of the year in José da Penha, with an average of 12h and 30min of daylight.
On the first day of December, sunrise is at 05:08 and sunset at 17:36. On the last day of the month, sunrise is at 05:21 and sunset at 17:50 -03.

Sunshine

The average sunshine in December in José da Penha, Brazil, is 9.1h.

UV index

January through March, August through December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: In December, an average UV index of 7 transforms into the following instructions:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. During bright days, sunglasses that offer UVA and UVB defense are recommended.