December weather forecast
Uibaí, Brazil

December, the first month of the summer in Uibaí, is still a tropical month, with an average temperature ranging between max 30.5°C (86.9°F) and min 20.3°C (68.5°F).

Temperature

The advent of December denotes an average high-temperature of a still tropical 30.5°C (86.9°F), subtly different from November's 30.7°C (87.3°F). The month of December records an average low-temperature of 20.3°C (68.5°F).

Heat index

December's mean heat index is estimated at a sweltering 35°C (95°F). Adopt extra safety steps, risk of heat exhaustion and heat cramps is notable. Sustained activity might cause heatstroke.
When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. Heat index values might soar by up to 15 Fahrenheit (8 Celsius) degrees with exposure to direct sunshine.
Note: The heat index, also known as 'felt air temperature' or 'real feel', determines the feeling of heat when you account for the relative humidity. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
Perspiring is how the human body naturally cools down, as sweat's evaporation takes away excess heat. Elevated relative humidity disrupts typical body cooling by reducing the evaporation rate, consequently decreasing the body's cooling rate and enhancing the feeling of heat. When heat surpasses the body's release mechanisms, dehydration and overheating risks become pronounced.

Humidity

The average relative humidity in December is 64%.

Rainfall

In Uibaí, in December, during 14.6 rainfall days, 78mm (3.07") of precipitation is typically accumulated. In Uibaí, during the entire year, the rain falls for 110.5 days and collects up to 525mm (20.67") of precipitation.

Daylight

December has the longest days of the year, with an average of 12h and 48min of daylight.
On the first day of the month, sunrise is at 05:15 and sunset at 18:00. On the last day of December, in Uibaí, sunrise is at 05:28 and sunset at 18:15 -03.

Sunshine

In Uibaí, the average sunshine in December is 10.3h.

UV index

January through August and December, with an average maximum UV index of 6, are months with the lowest UV index in Uibaí. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for average individuals.
Note: In December, an average UV index of 6 transforms into the following instructions:
Deflect overexposure. Sun protection is a necessity. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. 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.