October Weather in San Francisco, Mexico

Last updated: August 27, 2025

The average temperature in San Francisco, Mexico during October is a pleasant 23°C (74°F). Temperatures can vary, with a minimum of 11°C (51°F) and a maximum soaring up to 42°C (108°F). During this month, you can expect a precipitation amount of 9 mm (0.4 in) spread over just 1 day, alongside an average humidity of 71%.

October Temperature in San Francisco

In October in San Francisco, the average temperature is 23°C (74°F). Maximums can reach 42°C (108°F), while minimums can be as low as 11°C (51°F). This temperature range makes San Francisco an ideal destination for travelers seeking warm weather and diverse outdoor activities.

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 23°C (74°F), with highs reaching up to 42°C (108°F) and lows dropping to around 11°C (51°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 9 mm (0.4 in) over the course of 1 day.

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 9 mm (0.4 inches) of precipitation spread over approximately 1 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 71%. With an average temperature of 23°C (74°F), this humidity feels like a warm, enveloping embrace that can make outdoor activities feel sticky, but if you're well-hydrated and take breaks in the shade, it offers a pleasant tropical ambiance perfect for exploration.

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 71%, 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 is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, 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 9, which falls under the very high 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	16°C (61°F)	12 mm (0.5 inches)	71%	high
February Weather	16°C (62°F)	10 mm (0.4 inches)	69%	very high
March Weather	17°C (64°F)	14 mm (0.6 inches)	61%	very high
April Weather	19°C (67°F)	1 mm (0.0 inches)	58%	extreme
May Weather	19°C (67°F)	1 mm (0.0 inches)	61%	extreme
June Weather	22°C (72°F)	1 mm (0.0 inches)	61%	extreme
July Weather	26°C (79°F)	2 mm (0.1 inches)	63%	extreme
August Weather	27°C (81°F)	2 mm (0.1 inches)	70%	extreme
September Weather	26°C (79°F)	11 mm (0.4 inches)	75%	extreme
October Weather	23°C (74°F)	9 mm (0.4 inches)	71%	very high
November Weather	20°C (68°F)	15 mm (0.6 inches)	72%	high
December Weather	16°C (62°F)	12 mm (0.5 inches)	72%	moderate