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December Weather in Mariano Moreno, Argentina

Last updated: August 22, 2025

In December, the average temperature in Mariano Moreno, Argentina hovers around 19°C (66°F), offering a pleasant atmosphere for various activities. Temperatures can range from a crisp 3°C (37°F) to a warm 36°C (98°F). Expect light rain, with a total precipitation of 15 mm (0.6 in) over just 2 days, while the average humidity sits at a comfortable 57%. Whether you're exploring or relaxing, this month provides a delightful climate to enjoy!

December Temperature in Mariano Moreno

In December in Mariano Moreno, the average temperature is 19°C (66°F). Maximums can reach 36°C (98°F), while minimums can dip to 3°C (37°F). Be prepared for a wide range of temperatures when traveling during this month in Mariano Moreno.

December Weather in Mariano Moreno: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Mariano Moreno, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mariano Moreno, December typically has an average temperature of 19°C (66°F), with highs reaching up to 36°C (98°F) and lows dropping to around 3°C (37°F).
JanFebMarAprMayJunJulAugSepOctNovDec686761544539364147516166
Data source: Temperature data for Mariano Moreno 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 Mariano Moreno

In Mariano Moreno in December, the precipitation amount is 15 mm (0.6 in) over the course of 2 days.

December Precipitation Trends in Mariano Moreno

The chart displays monthly precipitation patterns in Mariano Moreno, 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 Mariano Moreno, December typically receives around 15 mm (0.6 inches) of precipitation spread over approximately 2 days.
JanFebMarAprMayJunJulAugSepOctNovDec61711232972582615251715
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Mariano Moreno

In Mariano Moreno in December, humidity is 57%. With an average temperature of 19°C (66°F), this humidity feels like a refreshing embrace, making it ideal for leisurely sightseeing and outdoor adventures while keeping you comfortably aware of the warm climate.

December Average Humidity in Mariano Moreno

This chart illustrates the average monthly humidity levels in Mariano Moreno, 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 Mariano Moreno is approximately 57%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec53%53%60%72%86%86%88%87%79%72%62%57%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Mariano Moreno

In Mariano Moreno 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 Mariano Moreno, you can check here.

Maximum UV Index Levels in Mariano Moreno for December

The chart shows the monthly maximum UV Index (UVI) for Mariano Moreno 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 Mariano Moreno typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec151310743458111314
Data source: Mariano Moreno 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 Mariano Moreno Compares to Other Months

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

This table compares monthly weather conditions in Mariano Moreno, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather20°C (69°F)6 mm (0.2 inches)53%extreme
February Weather19°C (67°F)17 mm (0.7 inches)53%extreme
March Weather16°C (61°F)11 mm (0.4 inches)60%very high
April Weather12°C (54°F)23 mm (0.9 inches)71%high
May Weather7°C (45°F)29 mm (1.1 inches)86%moderate
June Weather4°C (39°F)71 mm (2.8 inches)86%moderate
July Weather2°C (37°F)58 mm (2.3 inches)88%moderate
August Weather5°C (41°F)26 mm (1.0 inches)87%moderate
September Weather8°C (47°F)15 mm (0.6 inches)79%very high
October Weather11°C (52°F)25 mm (1.0 inches)72%extreme
November Weather16°C (61°F)17 mm (0.7 inches)62%extreme
December Weather19°C (66°F)15 mm (0.6 inches)57%extreme

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