Weather in San Francisco in October 2025
Average weather
Average temperature in San Francisco in October
The expected average maximum temperature in October is +24°C with a maximum of +33°C and a minimum of +6°C.
The average maximum temperature goes up 4% by the end of the month, compared with the beginning of the month, from +21°C to +22°C.
Is San Francisco warm or cold in October?
San Francisco is typically mild in October.
Maximum temperatures go down compared to the previous month from +24°C to +22°C. The minimum temperature also goes down from +14°C to +12°C.
Pack a light jacket as it will be warm in the day and cool in the evenings.
Take a look at how October is compared to other months in San Francisco:
Water temperature in San Francisco in October
Water in San Francisco in October is Cold. It varies from +12°C to +15°C, with an average of +14°C. The air temperature averaging +22°C is higher than the water temperature.
The water temperature in October is one of the warmest of the entire year:
Can you swim in San Francisco in October?
Climate in San Francisco in October
| September | October | November | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +24°C | +22°C | +17°C | ||||
| Min. temperature | ||||||
| +9°C | +6°C | +2°C | ||||
| Max. temperature | ||||||
| +37°C | +35°C | +27°C | ||||
| Rainfall | ||||||
| 4 mm | 29 mm | 63 mm | ||||
| Wind | ||||||
| 2 m/s | 2 m/s | 2 m/s | ||||
| Avg. water temperature | ||||||
| +14°C | +14°C | +13°C | ||||
| Humidity | ||||||
| 81% | 79% | 80% | ||||
| Air pressure | ||||||
| 1012 HPa | 1014 HPa | 1017 HPa | ||||
| Sunny days | ||||||
| 9 | 10 | 7 | ||||
| Cloudy days | ||||||
| 19 | 16 | 13 | ||||
| Rainy days | ||||||
| 2 | 5 | 10 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
October weather is still as good as in September. It’s getting colder in October. From +24°C in the day, the average maximum temperature lowers to +22°C. Prepare for more rain. Average rainfall goes from 4 mm to 29 mm. It feels drier, as humidity decreases from 81% to 79%. The average wind speed doesn’t change much during October, staying around 2 m/s. The good news is there are likely to be more sunny days in October, from 9 to 10.
Next month (November) brings a further decline in the weather.
Wind
The average wind speed is 1 m/s getting up to 2 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in San Francisco is gradually increasing during October, going from 1 m/s to 2 m/s over the course of the month.
Rain
How was the weather last October in San Francisco?
Climate Change over Years
The climate in San Francisco in October has not changed much over the last 43 years.
The average temperature was the lowest in 1982 (+18°C) and the highest in 2014 (+21°C). The driest year was 2013 with only 127 mm of rainfall, and the wettest year was 1983 with 1162 mm.
FAQ
Is October a good time to visit San Francisco?
Can you sunbathe in San Francisco in October?
Can you swim in San Francisco in October?
Is San Francisco rainy in October?
Is it sunny in San Francisco in October?
Other cities in USA
Monthly weather in San Francisco
Source of the data
For this page, we’ve looked at the typical weather in San Francisco, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.