December weather forecastSan Javier, Argentina

Weather in December

The first month of the summer, December, is a tropical month in San Javier, Argentina, with an average temperature fluctuating between 31.9°C (89.4°F) and 18.5°C (65.3°F).

Temperature

With the transition into December, San Javier notes an average high-temperature of a tropical 31.9°C (89.4°F), closely resembling November. San Javier, in December, experiences a marked contrast from daytime zeniths to a steady average low-temperature of 18.5°C (65.3°F).

Heat index

The average heat index in December is evaluated at a fiery hot 37°C (98.6°F). Implement additional cautionary measures, heat cramps and heat exhaustion could occur. Prolonged activity might induce heatstroke.
Realize that the values for the heat index are set for shaded places and light winds. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Young ones often do not realize the necessity to rest and replenish their fluids. Thirst is a delayed indication of dehydration - keeping hydrated, particularly in prolonged physical activity, is crucial.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. Higher relative humidity impedes evaporation, thus reducing heat dispersion from the body, culminating in a sensation of overheating. The body is at risk of dehydration and related complications when it fails to shed excessive heat.

Humidity

The average relative humidity in December is 60%.

Rainfall

In December, in San Javier, the rain falls for 9.7 days. Throughout December, 83mm (3.27") of precipitation is accumulated. Throughout the year, there are 104.2 rainfall days, and 701mm (27.6") of precipitation is accumulated.

Daylight

December has the longest days of the year in San Javier, with an average of 14h and 6min of daylight.
On the first day of the month, sunrise is at 05:49 and sunset at 19:48. On the last day of December, sunrise is at 06:00 and sunset at 20:05 -03.

Sunshine

With an average of 11.2h of sunshine, December has the most sunshine of the year in San Javier.

UV index

The months with the highest UV index in San Javier, Argentina, are January and December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for average individuals.
Note: A maximum high daily UV index of 7 during December translates into the following directions:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. 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. Stay sun-safe with clothing that is both closely woven and worn loosely.