December weather forecast
Sastre, Argentina

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

Temperature

The shift into December uncovers an average high-temperature of a hot 32.5°C (90.5°F), subtly different from the previous month. Sastre experiences a significant contrast between daily highs and an average nighttime temperature of 18.5°C (65.3°F) during December.

Heat index

December's mean heat index is evaluated at a sweltering 36°C (96.8°F). Ensure additional precautions, heat exhaustion and heat cramps may be expected. Heatstroke could occur from sustained activity.
Heat index details are generally centered around shaded locations and a mild breeze. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', blends air temperature and moisture content to represent the felt temperature to humans. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. Keep aware, the sun, when shining directly, can intensify the heat experience, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.
To offset high temperatures, the human body releases sweat which, upon evaporation, cools it down. Higher relative humidity impedes evaporation, thus reducing heat dispersion from the body, culminating in a sensation of overheating. As body temperatures escalate without effective heat release, one might face dehydration threats.

Humidity

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

Rainfall

In December, 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

The month with the longest days is December, with an average of 14h and 12min of daylight.
On the first day of the month, sunrise is at 05:54 and sunset at 19:58. On the last day of December, in Sastre, 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 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 the ordinary person.
Note: The daily high UV index of 7 during December translates into the following recommendations:
Avert overexposure. Light-skinned people might experience burning in less than 20 minutes. 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.