December weather forecast
Riachuelo, Argentina

December, the first month of the summer in Riachuelo, is also a hot month, with temperature in the range of an average low of 20.7°C (69.3°F) and an average high of 32.8°C (91°F).

Temperature

With the arrival of December, Riachuelo's average high-temperature registers at a still hot 32.8°C (91°F), indicating a subtle variation from the previous month. Riachuelo measures a considerable dip from daytime highs with an average low-temperature of 20.7°C (69.3°F) during December.

Heat index

For December, the heat index is appraised at a blistering 41°C (105.8°F). Exercise enhanced safety steps, heat cramps and heat exhaustion are probable. Heatstroke could be a result of sustained activity.
For clarity, heat index numbers account for light winds and areas under shade. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', determines the feeling of heat when you account for the relative humidity. An individual's perception of weather can be affected by a variety of elements including metabolic differences, being pregnant, and their level of physical exertion. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Young ones are generally more prone to risk than adults due to their reduced ability to sweat. Their large skin surface area relative to their diminutive bodies and elevated heat production from their activities further enhance this risk.
To achieve cooling, the human body employs perspiration, relying on the subsequent evaporation of sweat. When relative humidity is heightened, it slows the rate of evaporation, thereby decreasing the body's ability to shed heat and creating a sensation of overheating. Exceeding the body's heat disposal threshold results in a rise in body temperature and potential thermal disorders.

Humidity

The average relative humidity in December is 65%.

Rainfall

In Riachuelo, in December, during 11.5 rainfall days, 75mm (2.95") of precipitation is typically accumulated. In Riachuelo, during the entire year, the rain falls for 122.9 days and collects up to 741mm (29.17") of precipitation.

Daylight

With an average of 13h and 54min of daylight, December has the longest days of the year.
On the first day of the month, sunrise is at 05:51 and sunset at 19:37. On the last day of December, sunrise is at 06:02 and sunset at 19:53 -03.

Sunshine

With an average of 10.3h of sunshine, December has the most sunshine of the year in Riachuelo.

UV index

January, February and December, with an average maximum UV index of 7, are months with the highest UV index in Riachuelo. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for the average person.
Note: The maximum UV index, 7 during December, leads to the following recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. Boost your sun resistance with garments that are densely woven yet spacious.