December weather forecast
Tucano, Brazil

The first month of the summer, December, is still a hot month in Tucano, Brazil, with temperature in the range of an average low of 21.5°C (70.7°F) and an average high of 33.2°C (91.8°F).

Temperature

Tucano's transition from November to December introduces an average high-temperature of a still hot 33.2°C (91.8°F), marking an insignificant variation from the 32.9°C (91.2°F). An average temperature of 21.5°C (70.7°F) is recorded in Tucano during the nights in December.

Heat index

For December, the heat index is estimated at a blisteringly hot 42°C (107.6°F). Greater safety measures are needed, risk of heat exhaustion and heat cramps is high. Continuous activity might trigger heatstroke.
Always consider that heat index estimations are for light winds and places in the shade. 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 'felt air temperature', measures the perceived warmth when incorporating the humidity present in the air. One's perception of temperature is subjective, varying based on their activity and individual heat perception, influenced by factors like wind, clothing, and metabolic variations. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Young kids are often more at risk than adults as they tend to perspire less. Besides, their skin surface is larger relative to their small bodies, and their increased heat output from their active lifestyle compounds their risk.
The process of perspiration is vital for the human body to get rid of excess warmth by allowing sweat to evaporate. Elevated relative humidity diminishes evaporation, thereby reducing the body's ability to shed heat and creating a feeling of being too warm. Overheating dangers loom when the body's heat release mechanisms are overshadowed by excessive gain.

Humidity

November and December, with an average relative humidity of 65%, are the least humid months.

Rainfall

In Tucano, in December, it is raining for 9.1 days, with typically 29mm (1.14") of accumulated precipitation. Throughout the year, in Tucano, there are 145.3 rainfall days, and 309mm (12.17") of precipitation is accumulated.

Daylight

December has the longest days of the year in Tucano, with an average of 12h and 48min of daylight.
On the first day of the month, sunrise is at 05:02 and sunset at 17:46. On the last day of December, in Tucano, sunrise is at 05:15 and sunset at 18:01 -03.

Sunshine

In Tucano, the average sunshine in December is 7.9h.

UV index

The months with the highest UV index are January through March, October through December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: In December, a daily UV index of 7 turns into the following recommendations:
Shun overexposure. Protection from sun ravages is indispensable. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.