December weather forecast
Vargem Grande, Brazil

The first month of the summer, December, is still a tropical month in Vargem Grande, Brazil, with an average temperature ranging between min 23.2°C (73.8°F) and max 32.4°C (90.3°F).

Temperature

The ushering in of December brings an average high-temperature of a still hot 32.4°C (90.3°F), closely mirroring the 34.2°C (93.6°F) of November. During the nights in December, the temperature in Vargem Grande averages to a moderately hot 23.2°C (73.8°F).

Heat index

For December, the heat index is computed to be a blazing hot 45°C (113°F). Take caution: Heat exhaustion and heat cramps are probable. Heatstroke may be imminent with ongoing effort.
Remember that heat index calculations are made for conditions in the shade with light wind. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', integrates the air's temperature and its humidity to showcase the felt temperature by people. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. 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 largely significant for babies and toddlers. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
When faced with excessive heat, the human body begins to perspire, utilizing the cooling benefits of sweat evaporation. When relative humidity increases, the body's capacity to evaporate heat decreases, leading to a heightened sense of warmth. Rising body temperatures resulting from an imbalance in heat absorption can lead to potential thermal issues.

Humidity

In December, the average relative humidity in Vargem Grande is 78%.

Rainfall

In Vargem Grande, Brazil, in December, during 26.8 rainfall days, 122mm (4.8") of precipitation is typically accumulated. In Vargem Grande, during the entire year, the rain falls for 258.8 days and collects up to 1055mm (41.54") of precipitation.

Daylight

December has the longest days of the year, with an average of 12h and 18min of daylight.
On the first day of December in Vargem Grande, sunrise is at 05:35 and sunset at 17:54. On the last day of the month, sunrise is at 05:49 and sunset at 18:08 -03.

Sunshine

In Vargem Grande, the average sunshine in December is 7.6h.

UV index

January through April, June and December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index reading of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: The daily high UV index of 6 during December translates into the following recommendations:
Guard against overexposure. Protection from sun-induced harm is essential. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.