December weather forecast
Ilópolis, Brazil

The first month of the summer, December, is still a warm month in Ilópolis, Brazil, with an average temperature varying between 29.2°C (84.6°F) and 17.5°C (63.5°F).

Temperature

The commencement of December notes an average high-temperature of a still moderately hot 29.2°C (84.6°F), exhibiting little difference from the previous month. Ilópolis, in the month of December, anticipates a consistent average low-temperature of 17.5°C (63.5°F).

Heat index

December's heat index is calculated to be a very hot 35°C (95°F). Undertake special precautions, the probability of heat exhaustion and heat cramps is high. Prolonged activity may provoke heatstroke.
It is important to note that the heat index values are for shaded areas and light wind scenarios. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.
To offset high temperatures, the human body releases sweat which, upon evaporation, cools it down. Augmented relative humidity impedes typical body cooling mechanisms by lowering the evaporation rate, resulting in decreased body cooling and an amplified perception of heat. The body faces dehydration threats when its cooling efforts are outpaced by excessive heat gain.

Humidity

December is the least humid month in Ilópolis, with an average relative humidity of 77%.

Rainfall

In Ilópolis, Brazil, in December, it is raining for 16.5 days, with typically 70mm (2.76") of accumulated precipitation. Throughout the year, in Ilópolis, there are 169.4 rainfall days, and 977mm (38.46") of precipitation is accumulated.

Daylight

The month with the longest days is December, with an average of 14h and 0min of daylight.
On the first day of December in Ilópolis, Brazil, sunrise is at 05:21 and sunset at 19:13. On the last day of the month, sunrise is at 05:33 and sunset at 19:30 -03.

Sunshine

With an average of 8.5h of sunshine, December has the most sunshine of the year.

UV index

January through March, November and December, with an average maximum UV index of 6, are months with the highest UV index in Ilópolis. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: During December, 6 as the daily maximum UV index converts into the following advice:
Take precautions against overexposure. Protection against sun damage is needed. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.