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December Weather in Santiago del Estero, Argentina

Last updated: August 22, 2025

In Santiago del Estero, Argentina, the average temperature in December is a warm 28°C (83°F). Expect a minimum of 15°C (59°F) and a scorching maximum of 45°C (113°F). With an average humidity of 77%, you’ll also encounter around 61 mm (2.4 in) of precipitation spread over 8 days. Pack accordingly and enjoy your stay!

December Temperature in Santiago del Estero

In December in Santiago del Estero, the average temperature is 28°C (83°F). Maximum temperatures can reach 45°C (113°F), while minimums can drop to as low as 15°C (59°F). Travelers should be prepared for a wide range of temperatures and plan their activities accordingly.

December Weather in Santiago del Estero: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Santiago del Estero, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Santiago del Estero, December typically has an average temperature of 28°C (83°F), with highs reaching up to 45°C (113°F) and lows dropping to around 15°C (59°F).
JanFebMarAprMayJunJulAugSepOctNovDec838077726458576370758083
Data source: Temperature data for Santiago del Estero generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Santiago del Estero

In Santiago del Estero in December, the precipitation amount is 61 mm (2.4 in) distributed over 8 days.

December Precipitation Trends in Santiago del Estero

The chart displays monthly precipitation patterns in Santiago del Estero, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Santiago del Estero, December typically receives around 61 mm (2.4 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec10895936626108322366861
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Santiago del Estero

In Santiago del Estero in December, humidity is 77%. With an average temperature of 28°C (83°F), this humidity feels like walking through a warm, damp blanket, making outdoor activities more challenging and requiring frequent hydration breaks for travelers.

December Average Humidity in Santiago del Estero

This chart illustrates the average monthly humidity levels in Santiago del Estero, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Santiago del Estero is approximately 77%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec69%67%69%82%88%78%55%42%52%50%66%77%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Santiago del Estero

In Santiago del Estero in December, the maximum UV index reaches an alarming 15, which falls into the extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take precautions. For detailed information, you can check the Hourly UV Index in Santiago del Estero.

Maximum UV Index Levels in Santiago del Estero for December

The chart shows the monthly maximum UV Index (UVI) for Santiago del Estero in December, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In December, the maximum UV index in Santiago del Estero typically reaches 15, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec15141310756710121515
Data source: Santiago del Estero December UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How December Weather in Santiago del Estero Compares to Other Months

Weather in Santiago del Estero varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Santiago del Estero, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Santiago del Estero, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather28°C (84°F)108 mm (4.3 inches)69%extreme
February Weather27°C (80°F)95 mm (3.8 inches)67%extreme
March Weather25°C (77°F)93 mm (3.7 inches)69%extreme
April Weather22°C (72°F)66 mm (2.6 inches)82%very high
May Weather18°C (64°F)26 mm (1.0 inches)88%high
June Weather15°C (58°F)10 mm (0.4 inches)78%moderate
July Weather14°C (58°F)8 mm (0.3 inches)55%high
August Weather17°C (64°F)3 mm (0.1 inches)42%high
September Weather21°C (70°F)22 mm (0.9 inches)52%very high
October Weather24°C (75°F)36 mm (1.4 inches)50%extreme
November Weather26°C (80°F)68 mm (2.7 inches)66%extreme
December Weather28°C (83°F)61 mm (2.4 inches)77%extreme

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