December weather forecast
Sastre, Argentina

The first month of the summer, December, is a tropical month in Sastre, Argentina, with an average temperature fluctuating between 32.5°C (90.5°F) and 18.5°C (65.3°F).

Temperature

As December takes hold, the average high-temperature is a hot 32.5°C (90.5°F), nearly mirroring that of the previous month. The significant decline in Sastre's temperature, from day to night, averages of 18.5°C (65.3°F) in December.

Heat index

December's mean heat index is estimated at a sweltering 36°C (96.8°F). Extra safeguards are necessary to prevent heat exhaustion and heat cramps. Prolonged activity might cause heatstroke.
Data suggests that the heat index is set for environments in shade and with a light wind. Under direct sunshine, the heat index values might be elevated 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 swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Young people are generally more susceptible than adults because they perspire less. Furthermore, their proportionally larger skin surface to their petite bodies and the increased heat output from their actions add to the risk.
The process of perspiration is vital for the human body to get rid of excess warmth by allowing sweat to evaporate. Relative humidity in excess curtails evaporation, therefore reducing heat dissipation from the body, leading to feelings of excess heat. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.

Humidity

In Sastre, the average relative humidity in December is 51%.

Rainfall

In December, in Sastre, the rain falls for 9.5 days. Throughout December, 55mm (2.17") of precipitation is accumulated. In Sastre, during the entire year, the rain falls for 91.8 days and collects up to 449mm (17.68") of precipitation.

Daylight

With an average of 14h and 12min of daylight, December has the longest days of the year.
On the first day of December in Sastre, sunrise is at 05:54 and sunset at 19:58. On the last day of the month, sunrise is at 06:05 and sunset at 20:16 -03.

Sunshine

December has the most sunshine of the year in Sastre, with an average of 10.4h of sunshine.

UV index

The months with the highest UV index in Sastre, Argentina, are January, February and December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: The daily maximum UV index of 7 in December interprets into the following advice:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. 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. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.