December weather forecast
Lagoa do Sítio, Brazil

The first month of the summer, December, is still a hot month in Lagoa do Sítio, Brazil, with an average temperature fluctuating between 23.7°C (74.7°F) and 33.6°C (92.5°F).

Temperature

The beginning of December records an average high-temperature of a hot 33.6°C (92.5°F), almost echoing the conditions of the previous month. During December, Lagoa do Sítio experiences a consistent low-temperature average of 23.7°C (74.7°F).

Heat index

The heat index in December is estimated at a scorching 40°C (104°F). Extra safeguards are necessary to prevent heat exhaustion and heat cramps. Prolonged activity might cause heatstroke.
Remember that heat index calculations are made for conditions in the shade with light wind. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. Awareness of direct sun exposure is crucial as it has the potential to heighten the weather's effects, pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Young people are generally more susceptible than adults because they perspire less. Furthermore, their proportionally larger skin surface to their petite bodies and the increased heat output from their actions add to the risk.
In response to overheating, the human body perspires to cool down, mainly through the evaporation of sweat. Greater relative humidity lessens the rate of evaporation, thus decreasing the body's heat dispersal, which gives rise to a sensation of overheating. As body temperatures escalate without effective heat release, one might face dehydration threats.

Humidity

In December, the average relative humidity in Lagoa do Sítio is 56%.

Rainfall

In December, in Lagoa do Sítio, the rain falls for 17.6 days. Throughout December, 78mm (3.07") of precipitation is accumulated. Throughout the year, there are 152.5 rainfall days, and 872mm (34.33") of precipitation is accumulated.

Daylight

With an average of 12h and 30min of daylight, December has the longest days of the year in Lagoa do Sítio, Brazil.
On the first day of the month, sunrise is at 05:21 and sunset at 17:49. On the last day of December, in Lagoa do Sítio, Brazil, sunrise is at 05:34 and sunset at 18:04 -03.

Sunshine

In December, the average sunshine is 9h.

UV index

The average daily maximum UV index in December in Lagoa do Sítio is 7. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for average individuals.
Note: In December, the UV index of 7 transforms into the following advice:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. Experience reduced UV exposure by about half when donning a wide-brim hat.