December weather forecast
Macajuba, Brazil

The first month of the summer, December, is still a tropical month in Macajuba, Brazil, with an average temperature ranging between min 20.7°C (69.3°F) and max 31.6°C (88.9°F).

Temperature

With the onset of December, the average high-temperature registers at a still hot 31.6°C (88.9°F), subtly different from November's 31.3°C (88.3°F). Macajuba throughout December, records an average low-temperature of 20.7°C (69.3°F).

Heat index

December's average heat index is evaluated at a scorching 40°C (104°F). Adopt extra safety steps, risk of heat exhaustion and heat cramps is notable. Sustained activity might cause heatstroke.
It is important to note that the heat index values are for shaded areas and light wind scenarios. 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 'feels like', offers an insight into how hot it feels when we factor in moisture content. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Young individuals usually face more risks than adults due to their lower sweat production. Their large skin surface area relative to their tiny bodies and high heat production from their activities adds to their risk.
The human body keeps its cool primarily through perspiration, as this process enables sweat to evaporate, taking away the excess heat. An increase in relative humidity hinders the body's normal cooling function by reducing evaporation, thereby decreasing the rate of body cooling and enhancing the sense of warmth. When body temperature rises due to an imbalance in heat gain, there's a potential for dehydration and overheating.

Humidity

In December, the average relative humidity in Macajuba is 72%.

Rainfall

December is the month with the most rainfall in Macajuba. Rain falls for 15.1 days and accumulates 80mm (3.15") of precipitation.

Daylight

The month with the longest days in Macajuba is December, with an average of 12h and 48min of daylight.
On the first day of the month, sunrise is at 05:07 and sunset at 17:54. On the last day of December, in Macajuba, Brazil, sunrise is at 05:19 and sunset at 18:09 -03.

Sunshine

In December, the average sunshine is 7.9h.

UV index

In December, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for the average person.
Note: An average UV index of 6 in December transforms into this advice:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.