December weather forecast
Riachão do Bacamarte, Brazil

The first month of the summer, December, is still a tropical month in Riachão do Bacamarte, Brazil, with temperature in the range of an average low of 21.3°C (70.3°F) and an average high of 30.7°C (87.3°F).

Temperature

The start of December marks an average high-temperature of a still hot 30.7°C (87.3°F), hardly distinguishable from the conditions in November. The month of December records an average low-temperature of 21.3°C (70.3°F) in Riachão do Bacamarte.

Heat index

Throughout December, the heat index is computed to be a torrid 37°C (98.6°F). More safety actions are required, heat exhaustion and heat cramps are probable. Long-term activity may precipitate heatstroke.
Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'feels like' or 'apparent temperature', offers an insight into how hot it feels when we factor in moisture content. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. One's exposure to direct sunlight has the potential to intensify the heat sensation, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Kids often lack the knowledge about the necessity to take breaks and consume liquids. Thirst, as a late symptom of dehydration, necessitates the maintenance of hydration, particularly during enduring physical activities.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. When the level of relative humidity is elevated, evaporation diminishes, causing more warmth to be retained in the body than in dry air. Should the body fail to balance its heat gain, the escalating temperature poses health challenges.

Humidity

November and December, with an average relative humidity of 71%, are the least humid months.

Rainfall

In December, in Riachão do Bacamarte, the rain falls for 15.3 days. Throughout December, 20mm (0.79") of precipitation is accumulated. In Riachão do Bacamarte, during the entire year, the rain falls for 212.6 days and collects up to 486mm (19.13") of precipitation.

Daylight

The month with the longest days is December, with an average of 12h and 30min of daylight.
On the first day of the month, sunrise is at 04:56 and sunset at 17:27. On the last day of December, in Riachão do Bacamarte, Brazil, sunrise is at 05:09 and sunset at 17:42 -03.

Sunshine

The average sunshine in December in Riachão do Bacamarte is 6.9h.

UV index

January through June, August through December, with an average maximum UV index of 6, are months with the highest UV index in Riachão do Bacamarte. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: The daily high UV index of 6 in December translates into this advice:
Ward off overexposure. Defence against solar harm is crucial. 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. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.