December weather forecast
Três Fronteiras, Brazil

December, the first month of the summer in Três Fronteiras, is still a hot month, with an average temperature ranging between min 21.7°C (71.1°F) and max 30.2°C (86.4°F).

Temperature

Entering December, the average high-temperature is recorded at a still tropical 30.2°C (86.4°F), exhibiting a minimal shift from November's 30.7°C (87.3°F). During December, the average low-temperature is recorded at an agreeable 21.7°C (71.1°F).

Heat index

In December, the average heat index is evaluated at a very hot 38°C (100.4°F). Take more caution, heat exhaustion and heat cramps may occur. Long-lasting activity may cause heatstroke.
Understand that the heat index values take into account shaded locations and mild winds. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is a composite of temperature and humidity figures to convey how warm it feels. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. Sunshine, when direct, has the potential to intensify weather effects, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.
Perspiring is a crucial mechanism for the human body, allowing it to release excessive warmth through evaporating sweat. In circumstances of high air temperature and humidity (high heat index), the body's perspiration is restricted, heightening the feeling of warmth. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.

Humidity

In December, the average relative humidity is 79%.

Rainfall

In December, the rain falls for 28.5 days. Throughout December, 201mm (7.91") of precipitation is accumulated. Throughout the year, in Três Fronteiras, there are 209.8 rainfall days, and 1277mm (50.28") of precipitation is accumulated.

Daylight

The month with the longest days is December, with an average of 13h and 18min of daylight.
On the first day of December, sunrise is at 05:34 and sunset at 18:50. On the last day of the month, sunrise is at 05:46 and sunset at 19:06 -03.

Sunshine

The average sunshine in December is 7.7h.

UV index

January through July, November and December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: In December, the maximum UV index of 6 translates into these guidelines:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.