December weather forecast
Paulistana, Brazil

The first month of the summer, December, is also a hot month in Paulistana, Brazil, with an average temperature ranging between min 21.3°C (70.3°F) and max 31.1°C (88°F).

Temperature

Paulistana marks the onset of December with an average high-temperature of a still tropical 31.1°C (88°F), subtly divergent from November's 32.5°C (90.5°F). Throughout December, Paulistana records an average temperature of 21.3°C (70.3°F) at night.

Heat index

The heat index value during December is evaluated at a torrid 35°C (95°F). Incorporate extra safety measures to avoid heat exhaustion and heat cramps. Continuous activity could provoke heatstroke.
Take note of the fact that heat index values are based on shaded circumstances with light airflows. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', shows a temperature sensation when both heat and moisture conditions are combined. An individual's perception of weather can be affected by a variety of elements including metabolic differences, being pregnant, and their level of physical exertion. Taking into account that direct sunlight can boost the heat effect, the heat index may rise by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Kids often lack the knowledge about the necessity to take breaks and consume liquids. Thirst, as a late symptom of dehydration, necessitates the maintenance of hydration, particularly during enduring physical activities.
The evaporation of sweat is a natural cooling mechanism of the human body, facilitated by perspiration. During conditions of high air temperature and humidity (high heat index), the body's ability to perspire is inhibited, increasing the sensation of warmth. Accumulating more heat than the body can dissipate leads to an uptick in body temperature, with potential heat stress consequences.

Humidity

In December, the average relative humidity is 59%.

Rainfall

In Paulistana, Brazil, in December, during 18.4 rainfall days, 108mm (4.25") of precipitation is typically accumulated. In Paulistana, during the entire year, the rain falls for 155.7 days and collects up to 821mm (32.32") of precipitation.

Daylight

December has the longest days of the year, with an average of 12h and 36min of daylight.
On the first day of December in Paulistana, sunrise is at 05:16 and sunset at 17:50. On the last day of the month, sunrise is at 05:30 and sunset at 18:05 -03.

Sunshine

In December, the average sunshine in Paulistana, Brazil, is 8.5h.

UV index

January through August and December, with an average maximum UV index of 6, are months with the lowest UV index in Paulistana. A UV Index value of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: The maximum UV index of 6 during December leads to these instructions:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.