December weather forecast
Pentecoste, Brazil

December, the first month of the summer in Pentecoste, is also a moderately hot month, with an average temperature ranging between min 26°C (78.8°F) and max 29.8°C (85.6°F).

Temperature

In the transition from November to December, Pentecoste reports an average high-temperature of a still moderately hot 29.8°C (85.6°F), indicating a close resemblance to the prior month. The nights of December in Pentecoste anticipate a slight dip from daytime high temperatures, settling to an average low-temperature of 26°C (78.8°F).

Heat index

For most parts of December, the heat index is estimated at a torrid 36°C (96.8°F). Adopt heightened safety measures, heat cramps and heat exhaustion may occur. Sustained activity might cause heatstroke.
Data suggests that the heat index is set for environments in shade and with a light wind. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is found by incorporating humidity levels into the air temperature measurement. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. Realize that direct exposure to sunlight can augment the felt heat, leading to a potential increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Younglings frequently fail to recognize the requirement to rest and rehydrate. Thirst emerges late in dehydration - it is imperative to keep hydration levels high, particularly during extended physical exertions.
In the face of high temperatures, the human body's reflex is to perspire, leveraging sweat evaporation for cooling. During conditions of high air temperature and humidity (high heat index), the body's ability to perspire is inhibited, increasing the sensation of warmth. Heat-related disorders may develop if heat gain in the body overshadows its cooling capacity, leading to elevated temperatures.

Humidity

The average relative humidity in December in Pentecoste is 74%.

Rainfall

In Pentecoste, during December, the rain falls for 13.6 days and regularly aggregates up to 27mm (1.06") of precipitation. Throughout the year, in Pentecoste, Brazil, there are 214.6 rainfall days, and 868mm (34.17") of precipitation is accumulated.

Daylight

December has the longest days of the year, with an average of 12h and 18min of daylight.
On the first day of the month, sunrise is at 05:16 and sunset at 17:36. On the last day of December, sunrise is at 05:30 and sunset at 17:50 -03.

Sunshine

In Pentecoste, Brazil, the average sunshine in December is 7.8h.

UV index

The months with the highest UV index in Pentecoste, Brazil, are January, February, April through December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 7 in December interprets into the following advice:
Shun overexposure. Protection from sun ravages is indispensable. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.