December weather forecast
Arroio do Meio, Brazil

December, the first month of the summer in Arroio do Meio, is also a moderately hot month, with an average temperature ranging between max 29.2°C (84.6°F) and min 17.5°C (63.5°F).

Temperature

Arroio do Meio, Brazil, experiences a subtle adjustment in high-temperatures to a still moderately hot 29.2°C (84.6°F) with the onset of December, maintaining near parity with November's 26.5°C (79.7°F). In Arroio do Meio, in December, the average low-temperature is a comfortable 17.5°C (63.5°F).

Heat index

For December, the heat index is computed to be a very hot 35°C (95°F). Take more preventive steps, risk of heat exhaustion and heat cramps is elevated. Long activity may culminate in heatstroke.
Remember that heat index calculations are made for conditions in the shade with light wind. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'apparent temperature' or 'feels like', takes into account both air temperature and humidity to illustrate what people actually feel. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. When directly under the sun, the weather's impact can intensify, possibly boosting the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.
Perspiration and the resultant sweat evaporation are the body's natural thermostat, helping regulate temperature. Under conditions of increased relative humidity, the evaporation rate lessens, causing the body to retain more heat than under less humid conditions. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.

Humidity

December is the least humid month in Arroio do Meio, with an average relative humidity of 77%.

Rainfall

In Arroio do Meio, during December, the rain falls for 16.5 days and regularly aggregates up to 70mm (2.76") of precipitation. In Arroio do Meio, during the entire year, the rain falls for 169.4 days and collects up to 977mm (38.46") of precipitation.

Daylight

The month with the longest days in Arroio do Meio is December, with an average of 14h and 0min of daylight.
On the first day of December, sunrise is at 05:20 and sunset at 19:13. On the last day of the month, sunrise is at 05:31 and sunset at 19:30 -03.

Sunshine

December has the most sunshine of the year in Arroio do Meio, with an average of 8.5h of sunshine.

UV index

The months with the highest UV index are January through March, November and December, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: An average UV index of 6 in December transforms into this advice:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.