Santiago del Estero
Argentina
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Santiago del Estero, Argentina

December, the first month of the summer, in Santiago del Estero, is still a hot month, with average temperature fluctuating between 21.4°C (70.5°F) and 33°C (91.4°F).

Temperature

In December, the average high-temperature is essentially the same as in November - a still hot 33°C (91.4°F). In Santiago del Estero, Argentina, in December, the average low-temperature is 21.4°C (70.5°F).

Heat index

The average heat index is estimated at a sweltering 38.5°C (101.3°F). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'apparent temperature', 'felt air temperature', or 'real feel', is a measure of how hot it feels when the actual air humidity is factored in. Additional factors like differences in body mass, height, and shape, metabolic differences, wind, and activity influence one's weather impression. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

In December, the average relative humidity is 57%.

Rainfall

In Santiago del Estero, it is raining for 14.5 days, with typically 100mm (3.94") of accumulated precipitation. Throughout the year, in Santiago del Estero, Argentina, there are 113.8 rainfall days, and 586mm (23.07") of precipitation is accumulated.

Daylight

With an average of 13.9h of daylight, December has the longest days of the year.

Sunshine

In Santiago del Estero, the average sunshine in December is 8.8h.

UV index

January, February and December, with an average maximum UV index of 7, are months with the highest UV index in Santiago del Estero, Argentina. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to the Sun's UV rays for the ordinary person.
Note: In December, the average maximum UV index of 7 translate into the following recommendations:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

What is the temperature in December in Santiago del Estero?

In Santiago del Estero, Argentina, in December, the average high-temperature is 33°C (91.4°F), and the average low-temperature is 21.4°C (70.5°F). In December, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), that combines air temperature and relative humidity, is appraised at 38.5°C (101.3°F).

What is the average humidity in December in Santiago del Estero?

In Santiago del Estero, Argentina, the average relative humidity in December is 57%.

How many days does it rain in December in Santiago del Estero?

In Santiago del Estero, Argentina, in December, during 14.5 rainfall days, 100mm (3.94") of precipitation is typically accumulated.

When are the longest days in Santiago del Estero?

December has the longest days of the year in Santiago del Estero, with an average of 13.9h of daylight.

How many hours of daylight does Santiago del Estero have in December?

The average length of the day in December in Santiago del Estero, Argentina, is 13.9h.

How long on average sun shines in December in Santiago del Estero?

The average sunshine in December in Santiago del Estero is 8.8h.

What are the months with the highest UV index in Santiago del Estero?

Months with the highest UV index in Santiago del Estero, Argentina, are January, February and December, with an average maximum UV index of 7.

What is the UV index intensity in December in Santiago del Estero?

In Santiago del Estero, the average daily maximum UV index in December is 7. A UV Index value of 6 to 7 symbolizes a high health threat from the exposure to the Sun's UV radiation.
Average temperature in December - Santiago del Estero, Argentina
  • Average high temperature in December: 33°C

The warmest month (with the highest average high temperature) is January (33.6°C).
The month with the lowest average high temperature is July (19.4°C).

  • Average low temperature in December: 21.4°C

The month with the highest average low temperature is January (22.1°C).
The coldest month (with the lowest average low temperature) is July (9.8°C).

Average humidity in December - Santiago del Estero, Argentina
  • Average humidity in December: 57%

The month with the highest relative humidity is May (72%).
Months with the lowest relative humidity are August and September (48%).

Average rainfall in December - Santiago del Estero, Argentina
  • Average rainfall in December: 100mm

The wettest month (with the highest rainfall) is January (105mm).
Driest months (with the lowest rainfall) are July and August (3mm).

Average rainfall days in December - Santiago del Estero, Argentina
  • Average rainfall days in December: 14.5 days

The month with the highest number of rainy days is December (14.5 days).
The month with the lowest number of rainy days is August (1.5 days).

Average daylight in December / Average sunshine in December - Santiago del Estero, Argentina
  • Average daylight in December: 13.9h

The month with the longest days is December (Average daylight: 13.9h).
The month with shortest days is June (Average daylight: 10.4h).

  • Average sunshine in December: 8.8h

The month with most sunshine is August (Average sunshine: 9.5h).
Months with least sunshine are April and May (Average sunshine: 7.3).

Average UV index in December - Santiago del Estero, Argentina
  • Average UV index in December: 7

Months with the highest UV index are January, February and December (UV index 7).
Months with the lowest UV index are May and June (UV index 4).