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December Weather in Las Heras, Argentina

Last updated: August 22, 2025

In December, the average temperature in Las Heras, Argentina reaches a pleasant 23°C (74°F). Temperatures can vary, with a minimum of 9°C (49°F) and soaring to a maximum of 38°C (101°F). Expect an average precipitation of 43 mm (1.7 in) spread across 6 days, complemented by a comfortable average humidity of 35%.

December Temperature in Las Heras

In December in Las Heras, the average temperature is 23°C (74°F). Maximums can reach 38°C (101°F), and minimums can be as low as 9°C (49°F). Be prepared for a warm climate with occasional cool evenings, making it a great time for outdoor activities and exploration.

December Weather in Las Heras: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Las Heras, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Las Heras, December typically has an average temperature of 23°C (74°F), with highs reaching up to 38°C (101°F) and lows dropping to around 9°C (49°F).
JanFebMarAprMayJunJulAugSepOctNovDec777368625346455057637074
Data source: Temperature data for Las Heras 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 Las Heras

In Las Heras in December, the precipitation amount is 43 mm (1.7 in) over a period of 6 days.

December Precipitation Trends in Las Heras

The chart displays monthly precipitation patterns in Las Heras, 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 Las Heras, December typically receives around 43 mm (1.7 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec345443453719151421394343
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Las Heras

In Las Heras in December, humidity is 35%. With an average temperature of 23°C (74°F), this humidity feels like a comfortable, refreshing breeze, making it an ideal time for exploring the outdoors and enjoying sightseeing without feeling overwhelmed by the heat.

December Average Humidity in Las Heras

This chart illustrates the average monthly humidity levels in Las Heras, 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 Las Heras is approximately 35%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec40%46%54%65%69%64%65%60%51%49%44%36%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Las Heras

In Las Heras 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 Las Heras.

Maximum UV Index Levels in Las Heras for December

The chart shows the monthly maximum UV Index (UVI) for Las Heras 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 Las Heras typically reaches 15, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec151412864569121415
Data source: Las Heras 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 Las Heras Compares to Other Months

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

This table compares monthly weather conditions in Las Heras, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather25°C (77°F)34 mm (1.4 inches)40%extreme
February Weather23°C (73°F)54 mm (2.1 inches)46%extreme
March Weather20°C (69°F)43 mm (1.7 inches)54%extreme
April Weather17°C (62°F)45 mm (1.8 inches)65%very high
May Weather12°C (53°F)37 mm (1.4 inches)69%high
June Weather8°C (47°F)19 mm (0.7 inches)64%moderate
July Weather7°C (46°F)15 mm (0.6 inches)65%moderate
August Weather10°C (51°F)14 mm (0.6 inches)60%high
September Weather14°C (57°F)21 mm (0.8 inches)51%very high
October Weather17°C (63°F)39 mm (1.5 inches)49%extreme
November Weather21°C (70°F)43 mm (1.7 inches)44%extreme
December Weather23°C (74°F)43 mm (1.7 inches)35%extreme

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