December weather forecastMansidão, Brazil

Weather in December

The first month of the summer, December, is still a hot month in Mansidão, Brazil, with temperature in the range of an average high of 31.3°C (88.3°F) and an average low of 20.3°C (68.5°F).

Temperature

The advent of December reveals an average high-temperature of a still hot 31.3°C (88.3°F), showing minimal difference from the prior month. Nighttime temperature in Mansidão dips to a mean of 20.3°C (68.5°F) during December.

Heat index

The average heat index in December is estimated at a fiery hot 39°C (102.2°F). Implement additional preventive actions, heat cramps and heat exhaustion are potential hazards. Heatstroke could follow prolonged activity.
In terms of the heat index, values are set with light wind and shade conditions in mind. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a measure of how hot it feels when the actual air humidity is factored in. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to their vulnerability.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. Temperature imbalances caused by excessive heat retention can trigger heat-related maladies.

Humidity

The average relative humidity in December is 73%.

Rainfall

In December, the rain falls for 16.5 days. Throughout December, 65mm (2.56") of precipitation is accumulated. In Mansidão, during the entire year, the rain falls for 134.3 days and collects up to 578mm (22.76") of precipitation.

Daylight

The month with the longest days is December, with an average of 12h and 42min of daylight.
On the first day of the month, sunrise is at 05:24 and sunset at 18:06. On the last day of December, sunrise is at 05:37 and sunset at 18:21 -03.

Sunshine

December has the most sunshine of the year, with an average of 9.9h of sunshine.

UV index

January through July, November and December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index estimate of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: The maximum UV index, 6 during December, leads to the following recommendations:
Resist overexposure. Safeguarding from solar damage is indispensable. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.