December weather forecast
São Gabriel da Cachoeira, Brazil

The first month of the summer, December, is still a hot month in São Gabriel da Cachoeira, Brazil, with an average temperature ranging between max 31.1°C (88°F) and min 22.3°C (72.1°F).

Temperature

Upon the beginning of December, São Gabriel da Cachoeira's high-temperatures register at a still tropical 31.1°C (88°F), closely mirroring the preceding month. During December nights, São Gabriel da Cachoeira witnesses a consistent average temperature of 22.3°C (72.1°F).

Heat index

For December, the heat index is appraised at an extremely hot 44°C (111.2°F). Take caution: Heat exhaustion and heat cramps are probable. Heatstroke may be imminent with ongoing effort.
Factoring in the heat index, values are geared towards shaded areas with light breezes. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', provides an understanding of perceived warmth by combining temperature and relative humidity. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. 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 extremely significant for babies and toddlers. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.
To combat high temperatures, the human body perspires and relies on sweat evaporation for cooling. With higher relative humidity, the rate of evaporation is reduced, resulting in increased heat retention in the body compared to drier air. Accumulating heat beyond the body's cooling measures leads to rising temperatures and potential ailments.

Humidity

In São Gabriel da Cachoeira, the average relative humidity in December is 88%.

Rainfall

In December, in São Gabriel da Cachoeira, the rain falls for 29.7 days. Throughout December, 223mm (8.78") of precipitation is accumulated. In São Gabriel da Cachoeira, during the entire year, the rain falls for 338.5 days and collects up to 2316mm (91.18") of precipitation.

Daylight

The month with the longest days is December, with an average of 12h and 6min of daylight.
On the first day of the month, sunrise is at 06:13 and sunset at 18:21. On the last day of December, sunrise is at 06:27 and sunset at 18:35 -04.

Sunshine

In São Gabriel da Cachoeira, the average sunshine in December is 6.2h.

UV index

The months with the highest UV index in São Gabriel da Cachoeira, Brazil, are July, September and December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for the average person.
Note: A maximum daily UV index of 7 during December morphs into the following directions:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.