December weather forecast
Rodeio Bonito, Brazil

The first month of the summer, December, is also a moderately hot month in Rodeio Bonito, Brazil, with an average temperature ranging between min 18.2°C (64.8°F) and max 29.6°C (85.3°F).

Temperature

Rodeio Bonito experiences an average high-temperature of a still warm 29.6°C (85.3°F) in December, marking an insignificant shift from 27.9°C (82.2°F) in November. During the month of December, an average low-temperature of 18.2°C (64.8°F) is recorded.

Heat index

The heat index value during December is evaluated at a sweltering 36°C (96.8°F). Emphasize additional safety, risk of heat cramps and heat exhaustion is high. Continuous activity might result in heatstroke.
Heat index guidelines indicate values are for light wind scenarios and shaded regions. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Direct exposure to sun rays can potentially augment the heat sensation, elevating the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.
Perspiration and the resultant sweat evaporation are the body's natural thermostat, helping regulate temperature. When relative humidity is on the rise, it curtails evaporation, thereby reducing the heat elimination from the body and causing the feeling of being excessively hot. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.

Humidity

December is the least humid month in Rodeio Bonito, with an average relative humidity of 78%.

Rainfall

In Rodeio Bonito, in December, it is raining for 19.1 days, with typically 114mm (4.49") of accumulated precipitation. In Rodeio Bonito, during the entire year, the rain falls for 185.1 days and collects up to 1259mm (49.57") of precipitation.

Daylight

The month with the longest days is December, with an average of 13h and 48min of daylight.
On the first day of December, sunrise is at 05:29 and sunset at 19:14. On the last day of the month, sunrise is at 05:40 and sunset at 19:31 -03.

Sunshine

November and December, with an average of 8.8h of sunshine, are months with the most sunshine.

UV index

January through March, November and December, with an average maximum UV index of 6, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for the average person.
Note: The daily high UV index of 6 in December translates into this advice:
Avert overexposure. Light-skinned people might experience burning in less than 20 minutes. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.