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December Weather in Los Altos, Argentina

Last updated: August 22, 2025

In December, the average temperature in Los Altos, Argentina hovers around 23°C (74°F). While you can enjoy some warm days with a maximum reaching up to 36°C (97°F), be prepared for cooler evenings that can drop to a minimum of 11°C (53°F). With an average humidity of 61%, you'll find the climate quite comfortable, though occasional rainfall is likely, with 152 mm (6.0 in) expected over 14 days.

December Temperature in Los Altos

In December in Los Altos, the average temperature is 23°C (74°F), with maximums reaching 36°C (97°F) and minimums dropping to as low as 11°C (53°F). This climate makes Los Altos an ideal destination for travelers seeking warm weather with a pleasant range of temperatures.

December Weather in Los Altos: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Los Altos, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Los Altos, December typically has an average temperature of 23°C (74°F), with highs reaching up to 36°C (97°F) and lows dropping to around 11°C (53°F).
JanFebMarAprMayJunJulAugSepOctNovDec757269655851505561677173
Data source: Temperature data for Los Altos 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 Los Altos

In Los Altos in December, the precipitation amount is 152 mm (6.0 in) over a span of 14 days.

December Precipitation Trends in Los Altos

The chart displays monthly precipitation patterns in Los Altos, 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 Los Altos, December typically receives around 152 mm (6.0 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec142144175171903823104384126152
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Los Altos

In Los Altos in December humidity is 61%. With an average temperature of 23°C (74°F), this humidity feels like a warm, sticky embrace, making outdoor activities enjoyable but requiring frequent breaks to stay hydrated and cool.

December Average Humidity in Los Altos

This chart illustrates the average monthly humidity levels in Los Altos, 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 Los Altos is approximately 61%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec63%66%68%83%82%72%57%42%51%47%58%62%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Los Altos

In Los Altos 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 Los Altos.

Maximum UV Index Levels in Los Altos for December

The chart shows the monthly maximum UV Index (UVI) for Los Altos 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 Los Altos typically reaches 15, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec15141310756710131515
Data source: Los Altos 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 Los Altos Compares to Other Months

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

This table compares monthly weather conditions in Los Altos, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather24°C (76°F)142 mm (5.6 inches)63%extreme
February Weather22°C (73°F)144 mm (5.7 inches)66%extreme
March Weather21°C (70°F)175 mm (6.9 inches)68%extreme
April Weather18°C (65°F)171 mm (6.7 inches)83%very high
May Weather14°C (58°F)90 mm (3.5 inches)82%high
June Weather11°C (51°F)38 mm (1.5 inches)72%moderate
July Weather10°C (51°F)23 mm (0.9 inches)57%high
August Weather13°C (55°F)10 mm (0.4 inches)42%high
September Weather16°C (62°F)43 mm (1.7 inches)51%very high
October Weather19°C (67°F)84 mm (3.3 inches)47%extreme
November Weather22°C (71°F)125 mm (4.9 inches)58%extreme
December Weather23°C (74°F)152 mm (6.0 inches)61%extreme

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