December weather forecast
Sátiro Dias, Brazil

The first month of the summer, December, is still a hot month in Sátiro Dias, Brazil, with an average temperature fluctuating between 32.3°C (90.1°F) and 21.2°C (70.2°F).

Temperature

December denotes a minimal variation in the average high-temperature to a still hot 32.3°C (90.1°F) from November's 31.8°C (89.2°F). In Sátiro Dias, the expected average low-temperature for December is a pleasant 21.2°C (70.2°F).

Heat index

In December, the average heat index is computed to be a scorching 41°C (105.8°F). Adopt special protective actions against heat exhaustion and heat cramps. Long-duration activity risks heatstroke.
Heat index values are typically calculated for conditions of shade and a light breeze. The heat index can potentially augment by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'real feel' or 'felt air temperature', arises from combining readings of air temperature and relative moisture content. Additional elements encompassing metabolic differences, the degree of physical activity, and attire can impact the individual's perception of temperature. Direct sunlight can potentially raise the heat index by 15 Fahrenheit (8 Celsius) degrees, so it's crucial to consider. Heat index values hold particular significance for children. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.
Sweat evaporation, driven by perspiration, is the method the human body uses to rid itself of excessive warmth. Increased relative humidity slows down evaporation, thereby decreasing the rate of heat removal from the body, culminating in a sensation of overheating. Exceeding the body's heat disposal threshold results in a rise in body temperature and potential thermal disorders.

Humidity

The months with the lowest humidity are February, November and December, with an average relative humidity of 69%.

Rainfall

In December, the rain falls for 12.1 days. Throughout December, 36mm (1.42") of precipitation is accumulated. In Sátiro Dias, during the entire year, the rain falls for 176.7 days and collects up to 347mm (13.66") of precipitation.

Daylight

The month with the longest days is December, with an average of 12h and 48min of daylight.
On the first day of the month, sunrise is at 05:00 and sunset at 17:46. On the last day of December, sunrise is at 05:13 and sunset at 18:01 -03.

Sunshine

In Sátiro Dias, Brazil, the average sunshine in December is 7.6h.

UV index

The months with the highest UV index are January through March, November and December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for the average person.
Note: The maximum UV index of 7 during December leads to these instructions:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.