December weather forecast
Palmeirais, Brazil

The first month of the summer, December, is still a tropical month in Palmeirais, Brazil, with temperature in the range of an average low of 23.8°C (74.8°F) and an average high of 33.2°C (91.8°F).

Temperature

Palmeirais, Brazil, measures an average high-temperature of a still tropical 33.2°C (91.8°F) in December, nearly consistent with the preceding month. In Palmeirais, the average low-temperature during the month of December is a moderately hot 23.8°C (74.8°F).

Heat index

The heat index value during December is computed to be an extremely hot 42°C (107.6°F). Implement additional safety measures to avoid heat cramps and heat exhaustion. Persistent activity might trigger heatstroke.
Heat index guidelines indicate values are for light wind scenarios and shaded regions. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. When exposed to direct sunlight, it's possible for the heat index to increase by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Young ones often disregard the necessity to rest and hydrate. Thirst usually indicates advanced dehydration - hence, it is key to stay hydrated, particularly during ongoing physical activities.
To offset high temperatures, the human body releases sweat which, upon evaporation, cools it down. In the presence of elevated relative humidity, the evaporation rate decreases. This reduction leads to increased body heat retention compared to conditions of dry air. When heat surpasses the body's release mechanisms, dehydration and overheating risks become pronounced.

Humidity

In December, the average relative humidity in Palmeirais is 64%.

Rainfall

In December, the rain falls for 18.5 days. Throughout December, 65mm (2.56") of precipitation is accumulated. In Palmeirais, during the entire year, the rain falls for 157.4 days and collects up to 636mm (25.04") of precipitation.

Daylight

The month with the longest days is December, with an average of 12h and 30min of daylight.
On the first day of the month, sunrise is at 05:28 and sunset at 17:54. On the last day of December, in Palmeirais, sunrise is at 05:41 and sunset at 18:09 -03.

Sunshine

In December, the average sunshine is 9.1h.

UV index

The months with the lowest UV index in Palmeirais are January through August, October through December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for the average person.
Note: In December, the average maximum UV index of 7 translates into the following recommendations:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.