October Weather in San Francisco, Mexico

Last updated: August 26, 2025

In San Francisco, Mexico, the average temperature in October is a warm 28°C (83°F), with daily highs reaching up to 32°C (89°F) and lows dipping to 25°C (77°F). This month typically experiences 197 mm (7.7 in) of rainfall spread over 18 days, contributing to an average humidity level of 75%. Whether you're lounging under the sun or seeking respite from the rain, this climate offers a unique blend of warmth and moisture.

October Temperature in San Francisco

In October in San Francisco, the average temperature is 28°C (83°F), with maximums reaching up to 32°C (89°F) and minimums dropping as low as 25°C (77°F). This makes it an ideal time for travelers to enjoy warm, pleasant weather while exploring all that San Francisco has to offer.

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 28°C (83°F), with highs reaching up to 32°C (89°F) and lows dropping to around 25°C (77°F).

Data source: Temperature data for San Francisco generated using information from the Copernicus Climate Change Service.

October Precipitation in San Francisco

In San Francisco in October, the precipitation amount is 197 mm (7.7 in) over the course of 18 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 197 mm (7.7 inches) of precipitation spread over approximately 18 days.

Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

October Humidity in San Francisco

In San Francisco in October humidity is 75%. With an average temperature of 28°C (83°F), this humidity feels like a warm blanket enveloping you, making outdoor activities feel particularly heavy, and prompting frequent breaks in the shade to stay comfortable while traveling.

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 75%, offering insight into how humid the weather typically is during this month.

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.

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.
	Temperature	Precipitation	Humidity	UV
January Weather	24°C (75°F)	23 mm (0.9 inches)	71%	very high
February Weather	23°C (74°F)	22 mm (0.9 inches)	69%	very high
March Weather	23°C (74°F)	0 mm (0.0 inches)	67%	extreme
April Weather	24°C (76°F)	0 mm (0.0 inches)	66%	extreme
May Weather	25°C (78°F)	3 mm (0.1 inches)	69%	extreme
June Weather	27°C (81°F)	67 mm (2.6 inches)	78%	extreme
July Weather	29°C (84°F)	130 mm (5.1 inches)	79%	extreme
August Weather	29°C (84°F)	225 mm (8.9 inches)	78%	extreme
September Weather	28°C (83°F)	266 mm (10.5 inches)	78%	extreme
October Weather	28°C (83°F)	197 mm (7.7 inches)	75%	extreme
November Weather	27°C (81°F)	19 mm (0.8 inches)	74%	very high
December Weather	25°C (77°F)	15 mm (0.6 inches)	74%	high