December weather forecast
Riachão das Neves, Brazil

The first month of the summer, December, is still a warm month in Riachão das Neves, Brazil, with temperature in the range of an average low of 20.2°C (68.4°F) and an average high of 29.8°C (85.6°F).

Temperature

The shift into December finds Riachão das Neves at an average high-temperature of a moderately hot 29.8°C (85.6°F), closely comparable to November's conditions. In the month of December, the temperature in Riachão das Neves generally rests at an average low of 20.2°C (68.4°F).

Heat index

During December, the heat index is computed to be a sweltering 36°C (96.8°F). Implement heightened safety measures - risk of heat exhaustion and heat cramps is increased. Prolonged activity may result in heatstroke.
Heat index readings emphasize conditions of light breezes and shaded spots. If exposed to direct sunlight, the heat index could climb by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', quantifies the warmth felt when relative humidity is considered. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. Remember, direct sunlight exposure can heighten the heat impact and might increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
In high temperatures, perspiration kicks in, allowing the human body to cool down through the evaporation of sweat. When air moisture content is high, the cooling process through evaporation is not as efficient, leading to an ineffective body cooling process and a feeling of overheating. Increasing body temperatures can be a precursor to dehydration if the body can't shed the extra heat.

Humidity

In Riachão das Neves, the average relative humidity in December is 76%.

Rainfall

In Riachão das Neves, during December, the rain falls for 20.9 days and regularly aggregates up to 119mm (4.69") of precipitation. In Riachão das Neves, during the entire year, the rain falls for 162.9 days and collects up to 816mm (32.13") of precipitation.

Daylight

With an average of 12h and 48min of daylight, December has the longest days of the year in Riachão das Neves.
On the first day of the month, sunrise is at 05:25 and sunset at 18:11. On the last day of December, in Riachão das Neves, sunrise is at 05:38 and sunset at 18:27 -03.

Sunshine

In Riachão das Neves, the average sunshine in December is 9.8h.

UV index

The months with the lowest UV index are January through July, November and December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: A maximum UV index of 6 in December translates into the following recommendations:
Adhere to precautions and respect sun safety doctrines. Avoiding sunburn is vital. 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. Employ a wide-brim hat for potent defense against up to 50% of UV rays.