December weather forecast
Gualeguaychú, Argentina

December, the first month of the summer in Gualeguaychú, is a tropical month, with an average temperature fluctuating between 16.7°C (62.1°F) and 31.5°C (88.7°F).

Temperature

Gualeguaychú's weather in December presents a minor rise in the average high-temperature, moving from a warm 28.1°C (82.6°F) in November to a tropical 31.5°C (88.7°F). With the onset of night in December, Gualeguaychú reveals a significant decrease in temperature, averaging at an enjoyable 16.7°C (62.1°F).

Heat index

December's mean heat index is estimated at a sweltering 36°C (96.8°F). Adopt heightened preventive measures, heat exhaustion and heat cramps are probable. Persistent activity could lead to heatstroke.
In reference to the heat index, it's for places in shade and with a slight wind. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'felt air temperature' or 'real feel', arises from combining readings of air temperature and relative moisture content. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Kids are usually in more danger than grown-ups as they tend to sweat less. Plus, their bigger skin surface in relation to their small frames and increased heat generation due to their activity level make them more susceptible.
The body's self-cooling mechanism is rooted in perspiration, where evaporating sweat cools down excessive warmth. An elevated level of relative humidity hinders evaporation, leading to decreased heat elimination from the body, inducing a sensation of excess heat. Overheating risks increase with rising body temperatures, especially if heat release isn't efficient.

Humidity

In Gualeguaychú, the average relative humidity in December is 59%.

Rainfall

The month with the most rainfall is December, when the rain falls for 10.8 days and typically aggregates up to 83mm (3.27") of precipitation.

Daylight

The month with the longest days in Gualeguaychú is December, with an average of 14h and 18min of daylight.
On the first day of the month, sunrise is at 05:38 and sunset at 19:48. On the last day of December, in Gualeguaychú, Argentina, sunrise is at 05:48 and sunset at 20:06 -03.

Sunshine

December has the most sunshine of the year, with an average of 10.7h of sunshine.

UV index

January through March, November and December, with an average maximum UV index of 6, are months with the highest UV index in Gualeguaychú. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the average person.
Note: The UV index of 6 in December translates into these instructions:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.