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December Weather in San Javier, Mexico

Last updated: August 27, 2025

In December, the average temperature in San Javier, Mexico is a comfortable 17°C (62°F), with daytime highs reaching up to 31°C (88°F) and dipping as low as 1°C (33°F) at night. Expect 30 mm (1.2 in) of precipitation over approximately 3 days, contributing to an average humidity level of 85%. Perfect weather for those who enjoy warm, albeit slightly humid, climates!

December Temperature in San Javier

In December in San Javier, the average temperature is 17°C (62°F). The maximum can reach 31°C (88°F), while the minimum can drop as low as 1°C (33°F). This makes it a great time for travelers to experience a range of weather conditions, so be sure to pack accordingly!

December Weather in San Javier: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in San Javier, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Javier, December typically has an average temperature of 17°C (62°F), with highs reaching up to 31°C (88°F) and lows dropping to around 1°C (33°F).
JanFebMarAprMayJunJulAugSepOctNovDec616368758188858582797062
Data source: Temperature data for San Javier 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 San Javier

In San Javier in December, the precipitation amount is 30 mm (1.2 in) over the course of 3 days.

December Precipitation Trends in San Javier

The chart displays monthly precipitation patterns in San Javier, 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 San Javier, December typically receives around 30 mm (1.2 inches) of precipitation spread over approximately 3 days.
JanFebMarAprMayJunJulAugSepOctNovDec23202811261099789283830
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in San Javier

In San Javier in December humidity is 85%. With an average temperature of 17°C (62°F), this humidity feels like a warm, heavy blanket enveloping you, making travel somewhat uncomfortable as you navigate the thick, moist air that clings to your skin and slows your pace.

December Average Humidity in San Javier

This chart illustrates the average monthly humidity levels in San Javier, 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 San Javier is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec78%69%63%50%39%36%60%78%82%76%80%85%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in San Javier

In San Javier in December, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in San Javier.

Maximum UV Index Levels in San Javier for December

The chart shows the monthly maximum UV Index (UVI) for San Javier 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 San Javier typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec6810121212121111975
Data source: San Javier 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 San Javier Compares to Other Months

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

This table compares monthly weather conditions in San Javier, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather16°C (61°F)23 mm (0.9 inches)78%high
February Weather17°C (63°F)20 mm (0.8 inches)69%very high
March Weather20°C (69°F)28 mm (1.1 inches)63%very high
April Weather24°C (76°F)1 mm (0.0 inches)49%extreme
May Weather27°C (82°F)1 mm (0.0 inches)39%extreme
June Weather31°C (89°F)26 mm (1.0 inches)36%extreme
July Weather30°C (85°F)109 mm (4.3 inches)60%extreme
August Weather29°C (85°F)97 mm (3.8 inches)78%extreme
September Weather28°C (83°F)89 mm (3.5 inches)82%extreme
October Weather26°C (79°F)28 mm (1.1 inches)76%very high
November Weather21°C (70°F)38 mm (1.5 inches)80%high
December Weather17°C (62°F)30 mm (1.2 inches)85%moderate

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