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December Weather in San Francisco, Bolivia

Last updated: August 22, 2025

The average temperature in San Francisco, Bolivia during December is a pleasant 16°C (60°F). Expect minimum temperatures to dip to 8°C (46°F) and soar to a maximum of 27°C (80°F). This month also sees precipitation totaling 249 mm (9.8 in) across 27 days, contributing to a high average humidity of 87%. Prepare for a mix of warmth and wetness!

December Temperature in San Francisco

In December, in San Francisco, the average temperature is 16°C (60°F). Maximum temperatures can reach 27°C (80°F), while the minimum can drop as low as 8°C (46°F). This mild climate makes San Francisco a great destination for outdoor activities and sightseeing during your travels.

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

The chart illustrates December temperature patterns in San Francisco, 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, December typically has an average temperature of 16°C (60°F), with highs reaching up to 27°C (80°F) and lows dropping to around 8°C (46°F).
JanFebMarAprMayJunJulAugSepOctNovDec616059575451505256596060
Data source: Temperature data for San Francisco 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

In San Francisco in December, the precipitation amount is 249 mm (9.8 in) during a period of 27 days.

December Precipitation Trends in San Francisco

The chart displays monthly precipitation patterns in San Francisco, 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, December typically receives around 249 mm (9.8 inches) of precipitation spread over approximately 27 days.
JanFebMarAprMayJunJulAugSepOctNovDec174225185112442124235390126249
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in San Francisco

In San Francisco in December, humidity is 87%. With an average temperature of 16°C (60°F), this humidity feels like a warm, heavy blanket enveloping you; travel can become quite uncomfortable as the air clings to your skin, making you feel sticky and fatigued.

December Average Humidity in San Francisco

This chart illustrates the average monthly humidity levels in San Francisco, 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 is approximately 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%81%78%82%82%69%49%33%42%49%78%87%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in San Francisco

In San Francisco in December, the maximum UV index is 18, which corresponds to an extreme exposure category. This means that the time to burn is just 10 minutes. For more detailed information, you can check the hourly UV index in San Francisco.

Maximum UV Index Levels in San Francisco for December

The chart shows the monthly maximum UV Index (UVI) for San Francisco 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 typically reaches 18, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec1717161411891214171818
Data source: San Francisco 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 Compares to Other Months

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

This table compares monthly weather conditions in San Francisco, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather16°C (61°F)174 mm (6.8 inches)87%extreme
February Weather15°C (60°F)225 mm (8.9 inches)81%extreme
March Weather15°C (59°F)185 mm (7.3 inches)78%extreme
April Weather14°C (57°F)112 mm (4.4 inches)82%extreme
May Weather12°C (54°F)43 mm (1.7 inches)82%extreme
June Weather11°C (52°F)21 mm (0.8 inches)69%very high
July Weather10°C (51°F)24 mm (0.9 inches)49%very high
August Weather11°C (52°F)23 mm (0.9 inches)33%extreme
September Weather14°C (57°F)53 mm (2.1 inches)42%extreme
October Weather15°C (60°F)90 mm (3.5 inches)49%extreme
November Weather16°C (60°F)126 mm (4.9 inches)78%extreme
December Weather16°C (60°F)249 mm (9.8 inches)87%extreme

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