December weather forecast
Posadas, Argentina

Wrapping up the year, December in Posadas sees increased temperatures, with maximums averaging at 31.7°C (89.1°F). It is characterized by moderately high rainfall of 91mm (3.58") through the month. Furthermore, wind speeds start to decline, making for less breezy days. Despite the humidity and high temperatures, the generous daylight hours and adequate sunshine make it a delightful month. December provides an excellent close to the year with its warm and inviting weather.

Temperature

Posadas's average high-temperature marks a hot 31.7°C (89.1°F) with the advent of December, closely mirroring that of the preceding month. During the month of December, Posadas experiences a steady low-temperature average of 20°C (68°F).

Heat index

For most parts of December, the heat index is estimated at a blistering 40°C (104°F). Exercise heightened safety, heat cramps and heat exhaustion are probable. Persistent activity may provoke heatstroke.
Note that heat index values are valued for light wind and location in the shade. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', comes about by integrating the temperature readings with the humidity levels. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. Given the impact of direct sunlight, it's noteworthy that the felt temperature can rise by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
The human body keeps its cool primarily through perspiration, as this process enables sweat to evaporate, taking away the excess heat. Higher relative humidity impedes evaporation, thus reducing heat dispersion from the body, culminating in a sensation of overheating. When heat uptake goes beyond the body's cooling mechanisms, there's a surge in body temperature, posing health risks.

Humidity

With an average relative humidity of 72%, December is the least humid month.

Rainfall

In Posadas, in December, it is raining for 15.3 days, with typically 91mm (3.58") of accumulated precipitation. In Posadas, during the entire year, the rain falls for 152.6 days and collects up to 981mm (38.62") of precipitation.

Daylight

With an average of 13h and 48min of daylight, December has the longest days of the year.
On the first day of December in Posadas, sunrise is at 05:40 and sunset at 19:25. On the last day of the month, sunrise is at 05:51 and sunset at 19:42 -03.

Sunshine

In December, the average sunshine in Posadas is 10.1h.

UV index

In Posadas, the average daily maximum UV index in December is 6. A UV Index estimate of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for average individuals.
Note: A maximum high UV index of 6 in December translates into the following recommendations:
Employ safeguards and advocate sun safety protocols. Shielding against skin and eye damage is crucial. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.