December weather forecast
Cachoeira Alta, Brazil

The first month of the summer, December, is also a moderately hot month in Cachoeira Alta, Brazil, with temperature in the range of an average low of 20.7°C (69.3°F) and an average high of 28.9°C (84°F).

Temperature

Cachoeira Alta's weather, upon December's arrival, documents an average high-temperature of a still moderately hot 28.9°C (84°F), nearly identical to the prior month. Cachoeira Alta reports an average low-temperature of 20.7°C (69.3°F) during the nights of December.

Heat index

The heat index value for December is computed to be a fiery hot 35°C (95°F). Exercise more precautions, heat cramps and heat exhaustion are potential risks. Continuous activity could precipitate heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. If exposed to direct sunlight, the heat index could climb by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', offers an insight into how hot it feels when we factor in moisture content. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Keep it in mind, direct sunlight can augment the heat you experience, possibly pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. Under high air temperature coupled with high humidity (high heat index), the body's perspiration is reduced, intensifying the sensation of heat. The body faces dehydration threats when its cooling efforts are outpaced by excessive heat gain.

Humidity

In Cachoeira Alta, the average relative humidity in December is 84%.

Rainfall

The month with the most rainfall in Cachoeira Alta is December, when the rain falls for 28.6 days and typically aggregates up to 206mm (8.11") of precipitation.

Daylight

The month with the longest days in Cachoeira Alta is December, with an average of 13h and 12min of daylight.
On the first day of December, sunrise is at 05:37 and sunset at 18:48. On the last day of the month, sunrise is at 05:49 and sunset at 19:04 -03.

Sunshine

The average sunshine in December in Cachoeira Alta is 7.4h.

UV index

In Cachoeira Alta, the average daily maximum UV index in December is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 6 in December interprets into the following advice:
Fend off overexposure. Sun protection is vital. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Tightly woven clothing, when worn loosely, shields effectively against the Sun.