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December Weather in San Francisco Javier, Mexico

Last updated: August 26, 2025

In December, the average temperature in San Francisco Javier, Mexico hovers around 12°C (54°F). Expect minimums of -8°C (18°F) and maximums reaching up to 27°C (80°F). You'll experience a light precipitation of about 8 mm (0.3 in) over just 1 day, with an average humidity of approximately 83%.

December Temperature in San Francisco Javier

In December in San Francisco Javier, the average temperature is 12°C (54°F). The maximum can reach 27°C (80°F), and the minimum can be as low as -8°C (18°F). Therefore, be prepared for a wide range of temperatures and pack accordingly for your trip.

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

The chart illustrates December temperature patterns in San Francisco 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 Francisco Javier, December typically has an average temperature of 12°C (54°F), with highs reaching up to 27°C (80°F) and lows dropping to around -8°C (18°F).
JanFebMarAprMayJunJulAugSepOctNovDec535762667072676764635853
Data source: Temperature data for San Francisco 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 Francisco Javier

In San Francisco Javier in December, the precipitation amount is 8 mm (0.3 in) over the course of 1 day.

December Precipitation Trends in San Francisco Javier

The chart displays monthly precipitation patterns in San Francisco 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 Francisco Javier, December typically receives around 8 mm (0.3 inches) of precipitation spread over approximately 1 days.
JanFebMarAprMayJunJulAugSepOctNovDec141083166316710415348158
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in San Francisco Javier

In San Francisco Javier in December humidity is 83%. With an average temperature of 12°C (54°F), this humidity feels like a heavy blanket wrapping around you, making outdoor exploration feel sticky and uncomfortable, which can dampen the excitement of traveling.

December Average Humidity in San Francisco Javier

This chart illustrates the average monthly humidity levels in San Francisco 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 Francisco Javier is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec71%64%49%47%55%77%82%83%86%83%80%83%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in San Francisco Javier

In San Francisco Javier in December, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in San Francisco Javier.

Maximum UV Index Levels in San Francisco Javier for December

The chart shows the monthly maximum UV Index (UVI) for San Francisco 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 Francisco Javier typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec811131515141414141298
Data source: San Francisco 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 Francisco Javier Compares to Other Months

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

This table compares monthly weather conditions in San Francisco Javier, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather11°C (53°F)14 mm (0.5 inches)71%very high
February Weather14°C (57°F)10 mm (0.4 inches)64%extreme
March Weather17°C (63°F)8 mm (0.3 inches)49%extreme
April Weather19°C (66°F)3 mm (0.1 inches)47%extreme
May Weather21°C (70°F)16 mm (0.6 inches)55%extreme
June Weather22°C (72°F)63 mm (2.5 inches)77%extreme
July Weather19°C (67°F)167 mm (6.6 inches)82%extreme
August Weather20°C (68°F)104 mm (4.1 inches)83%extreme
September Weather18°C (65°F)153 mm (6.0 inches)86%extreme
October Weather17°C (63°F)48 mm (1.9 inches)83%extreme
November Weather14°C (58°F)15 mm (0.6 inches)80%very high
December Weather12°C (54°F)8 mm (0.3 inches)83%very high

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