December weather forecast
Bernardo Sayão, Brazil

December, the first month of the summer in Bernardo Sayão, is still a tropical month, with an average temperature fluctuating between 22.2°C (72°F) and 31.6°C (88.9°F).

Temperature

Bernardo Sayão's average high-temperature marks a still hot 31.6°C (88.9°F) with the advent of December, closely mirroring that of the preceding month. Bernardo Sayão records an average low of 22.2°C (72°F) throughout the nights in December.

Heat index

The average heat index in December is computed to be a blisteringly hot 43°C (109.4°F). Eyes open: Heat cramps and heat exhaustion are expected. Prolonged exertion could lead to heatstroke.
Given the heat index, its values are aligned with shaded sites and gentle winds. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is a numerical representation of warmth when taking temperature and moisture levels into account. Factors including metabolic differences, physical activity, and clothing are additional elements that influence the individual's temperature experience. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.
The process of perspiration is vital for the human body to get rid of excess warmth by allowing sweat to evaporate. Greater relative humidity lessens the rate of evaporation, thus decreasing the body's heat dispersal, which gives rise to a sensation of overheating. If heat absorption isn't effectively countered by the body's cooling methods, body temperature surges, hinting at potential problems.

Humidity

In Bernardo Sayão, Brazil, the average relative humidity in December is 79%.

Rainfall

In Bernardo Sayão, during December, the rain falls for 26.8 days and regularly aggregates up to 143mm (5.63") of precipitation. In Bernardo Sayão, Brazil, during the entire year, the rain falls for 213.3 days and collects up to 1154mm (45.43") of precipitation.

Daylight

The month with the longest days in Bernardo Sayão is December, with an average of 12h and 36min of daylight.
On the first day of December in Bernardo Sayão, sunrise is at 05:48 and sunset at 18:21. On the last day of the month, sunrise is at 06:01 and sunset at 18:36 -03.

Sunshine

In Bernardo Sayão, the average sunshine in December is 8.8h.

UV index

The months with the lowest UV index in Bernardo Sayão are January through April, October and December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for the average person.
Note: In December, the UV index of 6 transforms into the following advice:
Deflect overexposure. Sun protection is a necessity. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. To cut down UV radiation exposure by about half, sport a wide-brim hat.