December weather forecast
Santa Ana, Argentina

The first month of the summer, December, is a hot month in Santa Ana, Argentina, with temperature in the range of an average high of 31.5°C (88.7°F) and an average low of 20.5°C (68.9°F).

Temperature

Santa Ana, Argentina, marks the arrival of December with an average high-temperature of a hot 31.5°C (88.7°F), hardly different from November's 29.6°C (85.3°F). Throughout December, Santa Ana's nights cool down to an average of 20.5°C (68.9°F).

Heat index

For most parts of December, the heat index is computed to be a blistering 40°C (104°F). Emphasize additional safety, risk of heat cramps and heat exhaustion is high. Continuous activity might result in heatstroke.
Be advised, the heat index considers values for conditions in shade and with a light breeze. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', stands as a testimony to how temperature and humidity combine to impact our sense of warmth. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. Direct sun exposure is noteworthy in its ability to escalate the felt temperature, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are quite important for babies and toddlers. Children often overlook the necessity for resting and fluid replenishment. Thirst is a late sign of dehydration - thus, it is critical to stay hydrated, especially during extended periods of physical activities.
To offset high temperatures, the human body releases sweat which, upon evaporation, cools it down. Excessive relative humidity disturbs the body's typical cooling process by reducing evaporation, leading to a decrease in body cooling rate and an increase in the sensation of warmth. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

December is the least humid month, with an average relative humidity of 73%.

Rainfall

In Santa Ana, during December, the rain falls for 17.4 days and regularly aggregates up to 102mm (4.02") of precipitation. In Santa Ana, during the entire year, the rain falls for 154.8 days and collects up to 946mm (37.24") of precipitation.

Daylight

December has the longest days of the year, with an average of 13h and 48min of daylight.
On the first day of December, sunrise is at 05:39 and sunset at 19:23. On the last day of the month, sunrise is at 05:50 and sunset at 19:40 -03.

Sunshine

November and December, with an average of 10.6h of sunshine, are months with the most sunshine in Santa Ana.

UV index

January, February and December, with an average maximum UV index of 7, are months with the highest UV index in Santa Ana. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: An average UV index of 7 in December transforms into this advice:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.