December weather forecastCéu Azul, Brazil

Weather in December

December, the first month of the summer in Céu Azul, is a hot month, with an average temperature varying between 19.9°C (67.8°F) and 30°C (86°F).

Temperature

The beginning of December records an average high-temperature of a hot 30°C (86°F), marking a negligible difference from November's 29.3°C (84.7°F). Throughout December, Céu Azul's nights cool down to an average of 19.9°C (67.8°F).

Heat index

For most parts of December, the heat index is estimated at a fiery hot 37°C (98.6°F). Take additional safety steps, risk of heat exhaustion and heat cramps is notable. Prolonged activity may cause heatstroke.
Heat index details are generally centered around shaded locations and a mild breeze. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'real feel' or 'apparent temperature', comes about by integrating the temperature readings with the humidity levels. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Children often overlook the necessity for resting and fluid replenishment. Thirst is a late sign of dehydration - thus, it is critical to stay hydrated, especially during extended periods of physical activities.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. An increase in relative humidity retards evaporation, subsequently reducing the body's heat removal rate and leading to a sensation of being overly warm. When heat surpasses the body's release mechanisms, dehydration and overheating risks become pronounced.

Humidity

The average relative humidity in December is 79%.

Rainfall

The month with the most rainfall is December, when the rain falls for 22.4 days and typically aggregates up to 147mm (5.79") of precipitation.

Daylight

With an average of 13h and 42min of daylight, December has the longest days of the year in Céu Azul.
On the first day of the month, sunrise is at 05:36 and sunset at 19:12. On the last day of December, in Céu Azul, sunrise is at 05:48 and sunset at 19:28 -03.

Sunshine

In Céu Azul, Brazil, the average sunshine in December is 8.7h.

UV index

The months with the highest UV index are January through March, October through December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: The UV index of 6 during December leads to these advisories:
Apply measures and align with sun safety principles. Safeguarding against skin and eye injury is pivotal. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. To cut down UV radiation exposure by about half, sport a wide-brim hat.