December weather forecast
Ubiretama, Brazil

December, the first month of the summer in Ubiretama, is a hot month, with an average temperature ranging between max 30.1°C (86.2°F) and min 19.3°C (66.7°F).

Temperature

December's weather displays an average high-temperature of a tropical 30.1°C (86.2°F), slightly varied from November's 28.6°C (83.5°F). Ubiretama reports an average low-temperature of 19.3°C (66.7°F) during the nights of December.

Heat index

December's mean heat index is calculated to be a very hot 36°C (96.8°F). Special measures are necessary to avoid heat cramps and heat exhaustion. Persistent activity could result in heatstroke.
Heat index determinations are made taking into account the shade and light air movements. 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 'feels like' or 'apparent temperature', binds temperature metrics with humidity values to give a sense of the actual warmth. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.
Evaporation of sweat is the main factor behind the cooling effect of perspiration in the human body. When relative humidity is heightened, it slows the rate of evaporation, thereby decreasing the body's ability to shed heat and creating a sensation of overheating. When the body is unable to balance heat gain, its temperature elevates, which may induce thermal illnesses.

Humidity

The months with the lowest humidity are November and December, with an average relative humidity of 74%.

Rainfall

In December, in Ubiretama, the rain falls for 16.5 days. Throughout December, 102mm (4.02") of precipitation is accumulated. In Ubiretama, during the entire year, the rain falls for 165.6 days and collects up to 1213mm (47.76") of precipitation.

Daylight

With an average of 13h and 54min of daylight, December has the longest days of the year.
On the first day of December, sunrise is at 05:34 and sunset at 19:21. On the last day of the month, sunrise is at 05:45 and sunset at 19:38 -03.

Sunshine

In December, the average sunshine is 8.6h.

UV index

January through March, October through December, with an average maximum UV index of 6, are months with the highest UV index. 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: The UV index of 6 during December translates into the following guidance:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. 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. Always opt for UVA and UVB-resistant sunglasses on radiant days.