December weather forecast
Patos, Brazil

The first month of the summer, December, is also a hot month in Patos, Brazil, with an average temperature fluctuating between 33.8°C (92.8°F) and 22.5°C (72.5°F).

Temperature

With the transition into December, Patos notes an average high-temperature of a still tropical 33.8°C (92.8°F), closely resembling November. In December, Patos's temperature tends to fall to an average low of 22.5°C (72.5°F) during the night.

Heat index

The heat index in December is calculated to be an extremely hot 40°C (104°F). Implement more safety precautions, heat cramps and heat exhaustion may happen. Persistent activity could induce heatstroke.
It is emphasized that the heat index's values are meant for shaded zones with mild winds. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', marries air temperature and humidity to produce a value illustrating perceived warmth. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. 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.
Evaporating sweat, an outcome of perspiration, is key in assisting the human body to moderate its temperature. In situations of high air temperature combined with high humidity (significant heat index), the body's ability to perspire is reduced, heightening the sense of warmth. If heat absorption exceeds the body's cooling ability, body temperature can elevate, resulting in potential thermal illnesses.

Humidity

In December, the average relative humidity is 55%.

Rainfall

In Patos, Brazil, in December, during 9.6 rainfall days, 22mm (0.87") of precipitation is typically accumulated. Throughout the year, there are 126.4 rainfall days, and 401mm (15.79") of precipitation is accumulated.

Daylight

December has the longest days of the year, with an average of 12h and 30min of daylight.
On the first day of December in Patos, sunrise is at 05:03 and sunset at 17:33. On the last day of the month, sunrise is at 05:16 and sunset at 17:48 -03.

Sunshine

In Patos, the average sunshine in December is 9.3h.

UV index

January through March, August through December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: A daily high UV index of 7 in December leads to these guidelines:
Act on precautions and pay attention to sun safety recommendations. Avoidance of sunburn is obligatory. 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. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.