December weather forecast
Alto Garças, Brazil

December, the first month of the summer in Alto Garças, is still a tropical month, with an average temperature varying between 30.6°C (87.1°F) and 21.5°C (70.7°F).

Temperature

Alto Garças's weather in December displays an average high-temperature of a still tropical 30.6°C (87.1°F), showing minor disparity from November's 32.1°C (89.8°F). Alto Garças's average low-temperature for the month of December records at an agreeable 21.5°C (70.7°F).

Heat index

December's mean heat index is computed to be a blistering 40°C (104°F). Adopt heightened preventive measures, heat exhaustion and heat cramps are probable. Persistent activity could lead to heatstroke.
Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', joins air temperature with relative humidity to produce a temperature perception for humans. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.
As a reaction to high temperatures, the human body begins to perspire, using the evaporation of sweat to lower its temperature. During conditions of high air temperature and humidity (high heat index), the body's ability to perspire is inhibited, increasing the sensation of warmth. Elevated heat gain compared to the body's release capability poses risks of dehydration and potential overheating.

Humidity

The average relative humidity in December in Alto Garças is 81%.

Rainfall

In Alto Garças, in December, during 24.5 rainfall days, 116mm (4.57") of precipitation is typically accumulated. Throughout the year, in Alto Garças, there are 180 rainfall days, and 830mm (32.68") of precipitation is accumulated.

Daylight

December has the longest days of the year in Alto Garças, with an average of 13h and 6min of daylight.
On the first day of the month, sunrise is at 04:51 and sunset at 17:55. On the last day of December, in Alto Garças, sunrise is at 05:03 and sunset at 18:11 -04.

Sunshine

The average sunshine in December in Alto Garças, Brazil, is 8.5h.

UV index

The months with the lowest UV index are January through July and December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum UV index, 6 during December, leads to the following recommendations:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.