December weather forecastJateí, Brazil

Weather in December

The first month of the summer, December, is also a hot month in Jateí, Brazil, with an average temperature ranging between max 30.8°C (87.4°F) and min 21°C (69.8°F).

Temperature

December denotes a minimal variation in the average high-temperature to a still tropical 30.8°C (87.4°F) from November's 31°C (87.8°F). During December, Jateí's temperature averages to an agreeable 21°C (69.8°F) at night.

Heat index

December's mean heat index is calculated to be an extremely hot 40°C (104°F). Incorporate special precautions, risk of heat exhaustion and heat cramps is substantial. Sustained activity could cause heatstroke.
Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', reflects the blend of air temperature and relative humidity to give a temperature impression. The impression of weather on a person can be swayed by additional aspects, including metabolic variations, pregnancy, and activity levels. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Kids frequently fail to realize the necessity for resting and hydrating. Thirst is an advanced indication of dehydration - hence, maintaining hydration, especially during extended physical activities, becomes essential.
In response to overheating, the human body perspires to cool down, mainly through the evaporation of sweat. When air moisture content is high, the cooling process through evaporation is not as efficient, leading to an ineffective body cooling process and a feeling of overheating. Overheating and potential dehydration arise when body heat gain eclipses its release capability.

Humidity

The average relative humidity in December in Jateí is 79%.

Rainfall

In Jateí, during December, the rain falls for 24.1 days and regularly aggregates up to 137mm (5.39") of precipitation. In Jateí, during the entire year, the rain falls for 192.3 days and collects up to 1062mm (41.81") of precipitation.

Daylight

The month with the longest days in Jateí is December, with an average of 13h and 30min of daylight.
On the first day of December in Jateí, sunrise is at 04:44 and sunset at 18:08. On the last day of the month, sunrise is at 04:55 and sunset at 18:25 -04.

Sunshine

In December, the average sunshine in Jateí is 9.5h.

UV index

The months with the highest UV index are January through April, July through December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for the average person.
Note: The daily high UV index of 6 in December translates into this advice:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.