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December Weather in Monte Caseros, Argentina

Last updated: August 22, 2025

In Monte Caseros, Argentina, the average temperature in December hovers around 25°C (77°F). Expect a temperature range where the minimum dips to 9°C (49°F), while the maximum can soar up to 38°C (101°F). Be prepared for light showers, as the region receives approximately 74 mm (2.9 in) of precipitation over 6 days. The air tends to be quite moist, with an average humidity of 68%.

December Temperature in Monte Caseros

In December in Monte Caseros, the average temperature is 25°C (77°F). Maximums can reach 38°C (101°F), while minimums can drop to as low as 9°C (49°F). Pack accordingly for both warm days and cool evenings while enjoying your travels!

December Weather in Monte Caseros: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Monte Caseros, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Monte Caseros, December typically has an average temperature of 25°C (77°F), with highs reaching up to 38°C (101°F) and lows dropping to around 9°C (49°F).
JanFebMarAprMayJunJulAugSepOctNovDec797773696157565963687377
Data source: Temperature data for Monte Caseros 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 Monte Caseros

In Monte Caseros in December, the total precipitation amount is 74 mm (2.9 in), spread over a period of 6 days.

December Precipitation Trends in Monte Caseros

The chart displays monthly precipitation patterns in Monte Caseros, 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 Monte Caseros, December typically receives around 74 mm (2.9 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec150999911813893619413711810674
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Monte Caseros

In Monte Caseros in December, humidity is 68%. With an average temperature of 25°C (77°F), this humidity feels like a warm embrace that can quickly become stifling for traveling, making outdoor activities feel more strenuous and the air thick and heavy.

December Average Humidity in Monte Caseros

This chart illustrates the average monthly humidity levels in Monte Caseros, 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 Monte Caseros is approximately 68%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec59%57%69%78%82%81%66%54%61%59%58%68%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Monte Caseros

In Monte Caseros in December, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in Monte Caseros, you can check here.

Maximum UV Index Levels in Monte Caseros for December

The chart shows the monthly maximum UV Index (UVI) for Monte Caseros 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 Monte Caseros typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec151312964579121414
Data source: Monte Caseros 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 Monte Caseros Compares to Other Months

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

This table compares monthly weather conditions in Monte Caseros, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather26°C (79°F)150 mm (5.9 inches)59%extreme
February Weather25°C (78°F)99 mm (3.9 inches)56%extreme
March Weather23°C (74°F)99 mm (3.9 inches)69%extreme
April Weather20°C (69°F)118 mm (4.7 inches)78%very high
May Weather16°C (61°F)138 mm (5.4 inches)82%high
June Weather14°C (57°F)93 mm (3.7 inches)81%moderate
July Weather13°C (56°F)61 mm (2.4 inches)66%moderate
August Weather15°C (59°F)94 mm (3.7 inches)54%high
September Weather17°C (64°F)137 mm (5.4 inches)60%very high
October Weather20°C (68°F)117 mm (4.6 inches)59%extreme
November Weather23°C (73°F)106 mm (4.2 inches)57%extreme
December Weather25°C (77°F)74 mm (2.9 inches)68%extreme

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