December weather forecastItatuba, Brazil

Weather in December

The first month of the summer, December, is still a hot month in Itatuba, Brazil, with an average temperature ranging between min 21.3°C (70.3°F) and max 30.7°C (87.3°F).

Temperature

As November transitions into December, the average high-temperature rests at a still hot 30.7°C (87.3°F), maintaining a close resemblance to the previous month. Itatuba's temperature lowers to a mean of 21.3°C (70.3°F) during the nights in December.

Heat index

The heat index in December is computed to be a sweltering 37°C (98.6°F). Greater preventive actions are needed, heat exhaustion and heat cramps are likely. Persistent activity could provoke heatstroke.
Heat index readings emphasize conditions of light breezes and shaded spots. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is found by incorporating humidity levels into the air temperature measurement. Factors including metabolic differences, physical activity, and clothing are additional elements that influence the individual's temperature experience. Under direct sun rays, the felt temperature might be heightened, with the heat index increasing by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. An upsurge in relative humidity affects normal body cooling mechanisms by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. When heat surpasses the body's release mechanisms, dehydration and overheating risks become pronounced.

Humidity

November and December, with an average relative humidity of 71%, are the least humid months in Itatuba, Brazil.

Rainfall

In Itatuba, in December, during 15.3 rainfall days, 20mm (0.79") of precipitation is typically accumulated. In Itatuba, during the entire year, the rain falls for 212.6 days and collects up to 486mm (19.13") of precipitation.

Daylight

The month with the longest days is December, with an average of 12h and 30min of daylight.
On the first day of the month, sunrise is at 04:56 and sunset at 17:27. On the last day of December, in Itatuba, sunrise is at 05:09 and sunset at 17:42 -03.

Sunshine

In Itatuba, the average sunshine in December is 6.9h.

UV index

The months with the highest UV index in Itatuba are January through June, August through December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for the average person.
Note: The UV index of 6 in December translates into these instructions:
Deflect overexposure. Sun protection is a necessity. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.