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December Weather in Los Altos, Mexico

Last updated: August 26, 2025

In December, the average temperature in Los Altos, Mexico is a pleasant 21°C (69°F). Expect a minimum of 8°C (46°F) and a maximum of 33°C (92°F). The region typically experiences 21 mm (0.8 in) of precipitation over 4 days, alongside an average humidity level of 91%. Perfect for enjoying the local sights while staying prepared for the occasional shower!

December Temperature in Los Altos

In December in Los Altos, the average temperature is 21°C (69°F). Maximum temperatures can reach 33°C (92°F), while minimums can drop to as low as 8°C (46°F). This pleasant climate makes Los Altos an ideal destination for travelers seeking both warmth and comfort during their trip.

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 21°C (69°F), with highs reaching up to 33°C (92°F) and lows dropping to around 8°C (46°F).
JanFebMarAprMayJunJulAugSepOctNovDec687074798383848482797369
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 21 mm (0.8 in) over a span of 4 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 21 mm (0.8 inches) of precipitation spread over approximately 4 days.
JanFebMarAprMayJunJulAugSepOctNovDec4528354411112694891611664721
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 91%. With an average temperature of 21°C (69°F), this humidity feels like walking through a warm, damp embrace, making travel a sweaty endeavor as the air clings to your skin and the slightest movement requires extra effort.

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 91%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%86%83%80%82%79%72%74%84%92%91%91%
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 is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more 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 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec710111212121312121087
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 Weather20°C (68°F)45 mm (1.8 inches)88%high
February Weather21°C (70°F)28 mm (1.1 inches)86%very high
March Weather23°C (74°F)35 mm (1.4 inches)83%extreme
April Weather26°C (79°F)44 mm (1.7 inches)80%extreme
May Weather28°C (83°F)111 mm (4.4 inches)82%extreme
June Weather29°C (84°F)126 mm (5.0 inches)79%extreme
July Weather29°C (84°F)94 mm (3.7 inches)72%extreme
August Weather29°C (85°F)89 mm (3.5 inches)74%extreme
September Weather28°C (83°F)161 mm (6.3 inches)84%extreme
October Weather26°C (79°F)166 mm (6.5 inches)92%very high
November Weather23°C (73°F)47 mm (1.8 inches)91%very high
December Weather21°C (69°F)21 mm (0.8 inches)91%high

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