December weather forecastFernandópolis, Brazil

Weather in December

December, the first month of the summer in Fernandópolis, is also a hot month, with an average temperature varying between 30.1°C (86.2°F) and 21.4°C (70.5°F).

Temperature

December's average high-temperature stands at a still tropical 30.1°C (86.2°F), showing little deviation from November's 30.5°C (86.9°F). Fernandópolis registers a consistent average low-temperature of 21.4°C (70.5°F) during December.

Heat index

The average heat index in December is calculated to be a very hot 38°C (100.4°F). Implement additional preventive actions, heat cramps and heat exhaustion are potential hazards. Heatstroke could follow prolonged activity.
The standards for the heat index are set for locations in shade and under light breezes. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is a value derived by merging air temperature with the humidity to convey how the climate feels. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.

Humidity

The average relative humidity in December in Fernandópolis is 80%.

Rainfall

In Fernandópolis, in December, during 28 rainfall days, 203mm (7.99") of precipitation is typically accumulated. Throughout the year, in Fernandópolis, Brazil, there are 207.2 rainfall days, and 1290mm (50.79") of precipitation is accumulated.

Daylight

The month with the longest days in Fernandópolis is December, with an average of 13h and 18min of daylight.
On the first day of the month, sunrise is at 05:32 and sunset at 18:48. On the last day of December, sunrise is at 05:44 and sunset at 19:04 -03.

Sunshine

In Fernandópolis, the average sunshine in December is 7.8h.

UV index

The months with the lowest UV index in Fernandópolis, Brazil, are January through July, September through December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for the ordinary person.
Note: A maximum high daily UV index of 6 during December translates into the following directions:
Prevent overexposure. Protection from the sun's harmful effects is needed. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.