December weather forecastChã Grande, Brazil

Weather in December

December, the first month of the summer in Chã Grande, is also a moderately hot month, with temperature in the range of an average low of 21°C (69.8°F) and an average high of 29.9°C (85.8°F).

Temperature

December is marked by an average high-temperature of a still warm 29.9°C (85.8°F), almost identical to the preceding month. The low-temperature averages to an agreeable 21°C (69.8°F) during the nights of December.

Heat index

December's mean heat index is calculated to be a sweltering 36°C (96.8°F). Use additional protective measures, heat cramps and heat exhaustion are possible outcomes. Continuous activity might lead to heatstroke.
Take note of the fact that heat index values are based on shaded circumstances with light airflows. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is found by incorporating humidity levels into the air temperature measurement. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. In conditions of both high temperature and humidity (a high heat index), sweating is limited and the perception of heat is enhanced. Accumulating heat beyond the body's cooling measures leads to rising temperatures and potential ailments.

Humidity

With an average relative humidity of 76%, December is the least humid month in Chã Grande.

Rainfall

In Chã Grande, in December, it is raining for 16 days, with typically 21mm (0.83") of accumulated precipitation. Throughout the year, in Chã Grande, Brazil, there are 224.2 rainfall days, and 472mm (18.58") of precipitation is accumulated.

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 Chã Grande, sunrise is at 04:53 and sunset at 17:28. On the last day of the month, sunrise is at 05:07 and sunset at 17:42 -03.

Sunshine

In Chã Grande, the average sunshine in December is 6.6h.

UV index

The months with the highest UV index are January through May, August through December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for the average person.
Note: In December, a daily UV index of 6 turns into the following recommendations:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.