nomadseason

October Weather in San Francisco, Mexico

Last updated: August 27, 2025

In San Francisco, Mexico, the average temperature in October is a warm 26°C (80°F), with a minimum of 16°C (61°F) and a maximum reaching 33°C (93°F). Expect significant rainfall, with a total precipitation of 174 mm (6.9 in) spread over 22 days. The climate is notably humid, boasting an average humidity of 83%.

October Temperature in San Francisco

In October in San Francisco, the average temperature is 26°C (80°F). Maximum temperatures can reach 33°C (93°F), while minimums can drop as low as 16°C (61°F). This mild climate makes it an ideal destination for outdoor activities and sightseeing.

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

The chart illustrates October 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, October typically has an average temperature of 26°C (80°F), with highs reaching up to 33°C (93°F) and lows dropping to around 16°C (61°F).
JanFebMarAprMayJunJulAugSepOctNovDec737677808282828281807674
Data source: Temperature data for San Francisco generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

October Precipitation in San Francisco

In San Francisco in October, the precipitation amount is 174 mm (6.9 in) distributed over 22 days.

October Precipitation Trends in San Francisco

The chart displays monthly precipitation patterns in San Francisco, with values for each month alongside October’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October’s conditions compare to those of other months. In San Francisco, October typically receives around 174 mm (6.9 inches) of precipitation spread over approximately 22 days.
JanFebMarAprMayJunJulAugSepOctNovDec3919153989164871101481746735
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

October Humidity in San Francisco

In San Francisco in October humidity is 83%. With an average temperature of 26°C (80°F), this humidity feels like a warm, enveloping blanket that can make traveling quite uncomfortable; you may find yourself needing frequent breaks for hydration and cool shade as the thick air clings to your skin.

October Average Humidity in San Francisco

This chart illustrates the average monthly humidity levels in San Francisco, with October’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In October, average humidity in San Francisco is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec81%78%71%70%68%69%74%81%82%83%84%86%
Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in San Francisco

In San Francisco in October, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in San Francisco.

Maximum UV Index Levels in San Francisco for October

The chart shows the monthly maximum UV Index (UVI) for San Francisco in October, 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 October, the maximum UV index in San Francisco typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec810121313131212121187
Data source: San Francisco October 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 October 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 October’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 October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather23°C (73°F)38 mm (1.5 inches)81%very high
February Weather24°C (76°F)19 mm (0.8 inches)78%very high
March Weather25°C (77°F)15 mm (0.6 inches)71%extreme
April Weather27°C (81°F)38 mm (1.5 inches)70%extreme
May Weather28°C (82°F)89 mm (3.5 inches)68%extreme
June Weather28°C (82°F)164 mm (6.5 inches)69%extreme
July Weather28°C (83°F)87 mm (3.4 inches)74%extreme
August Weather28°C (83°F)110 mm (4.3 inches)81%extreme
September Weather27°C (82°F)148 mm (5.8 inches)82%extreme
October Weather26°C (80°F)174 mm (6.9 inches)83%extreme
November Weather24°C (76°F)67 mm (2.6 inches)84%very high
December Weather23°C (74°F)35 mm (1.4 inches)86%high

Compare San Francisco's Climate with Cities Worldwide