December weather forecast
Fortín Lavalle, Argentina

The first month of the summer, December, is still a hot month in Fortín Lavalle, Argentina, with an average temperature ranging between min 21.9°C (71.4°F) and max 34.2°C (93.6°F).

Temperature

The average high-temperature during December registers at a still tropical 34.2°C (93.6°F), closely corresponding to the preceding month. Throughout December, Fortín Lavalle braces for a considerable drop from daytime highs, with an average low-temperature of 21.9°C (71.4°F).

Heat index

December's mean heat index is estimated at a scorching 44°C (111.2°F). Alert: Heat cramps and heat exhaustion are likely to occur. Prolonged exertion can lead to heatstroke.
Bear in mind that the heat index values are determined for shaded areas and light breezes. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', reflects the blend of air temperature and relative humidity to give a temperature impression. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. Taking into account that direct sunlight can boost the heat effect, the heat index may rise by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
For the human body, perspiration is the go-to method to regulate temperature, using sweat's evaporation to dissipate warmth. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. Rising body temperatures due to excess heat retention could signify impending heat disorders.

Humidity

In Fortín Lavalle, the average relative humidity in December is 63%.

Rainfall

In December, the rain falls for 12.1 days. Throughout December, 73mm (2.87") of precipitation is accumulated. In Fortín Lavalle, during the entire year, the rain falls for 114 days and collects up to 520mm (20.47") of precipitation.

Daylight

December has the longest days of the year in Fortín Lavalle, with an average of 13h and 42min of daylight.
On the first day of December in Fortín Lavalle, Argentina, sunrise is at 06:01 and sunset at 19:38. On the last day of the month, sunrise is at 06:12 and sunset at 19:55 -03.

Sunshine

The average sunshine in December is 8.6h.

UV index

The months with the highest UV index in Fortín Lavalle are January, February and December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for average individuals.
Note: During December, 7 as the daily maximum UV index converts into the following advice:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. Experience reduced UV exposure by about half when donning a wide-brim hat.