December weather forecastGuaçuí, Brazil

Weather in December

December, the first month of the summer in Guaçuí, is also a moderately hot month, with an average temperature varying between 19.9°C (67.8°F) and 28.7°C (83.7°F).

Temperature

Transitioning into December, Guaçuí records an average high-temperature of a still warm 28.7°C (83.7°F), almost identical to November's 27.6°C (81.7°F). In Guaçuí, December's nights observe an average temperature dip to an enjoyable 19.9°C (67.8°F).

Heat index

During December, the heat index is computed to be a fiery hot 35°C (95°F). Heightened safety actions are necessary, heat cramps and heat exhaustion are probable. Persistent activity may lead to heatstroke.
Remember that heat index calculations are made for conditions in the shade with light wind. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is the result of factoring in humidity to the air temperature, indicating perceived warmth. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. With direct sunlight, be aware that it might enhance the heat sensation, raising the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.
The physiological way the human body responds to excessive heat is by inducing perspiration, using sweat evaporation as a cooling mechanism. Higher relative humidity impedes evaporation, thus reducing heat dispersion from the body, culminating in a sensation of overheating. Accumulating heat beyond the body's cooling measures leads to rising temperatures and potential ailments.

Humidity

In Guaçuí, Brazil, the average relative humidity in December is 86%.

Rainfall

The month with the most rainfall in Guaçuí is December, when the rain falls for 26.4 days and typically aggregates up to 207mm (8.15") of precipitation.

Daylight

The month with the longest days in Guaçuí is December, with an average of 13h and 24min of daylight.
On the first day of December in Guaçuí, sunrise is at 04:56 and sunset at 18:15. On the last day of the month, sunrise is at 05:08 and sunset at 18:31 -03.

Sunshine

In Guaçuí, the average sunshine in December is 7.8h.

UV index

January, February, August, September and December, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for average individuals.
Note: The UV index of 6 during December leads to these advisories:
Resist overexposure. Safeguarding from solar damage is indispensable. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Boost your sun resistance with garments that are densely woven yet spacious.