San Francisco Weather in October
What's the weather like in San Francisco (Morazán) in October 2025?
The climate in San Francisco during October can be summarized as hot, humid and very wet.
October is in the fall / autumn in San Francisco and is typically the 4th coldest month of the year. Daytime maximum temperatures average around a muggy 29°C (85°F), whilst at night 19°C (67°F) is normal.
| Daytime temperature | 29.4°C 84.9°F |
|---|---|
| Nightly temperature | 19.2°C 66.6°F |
| Average temperature | 24.3°C 75.7°F |
| Daily sunshine | 7 hrs |
| Avg rainfall | 217 mm 8.5 ins |
| Rainy days | 22 days |
| Sea temperature | 29.2°C 84.6°F |
| Humidity | 82% |
| Windspeed | 11.5kph 7 mph |
On average October is the 5th wettest month of the year in San Francisco with around 217mm 8.5 inches of rain making it a very wet time to visit. This rainfall is typically spread over 22 days, although this may vary considerably.
On the flip side this corresponds to an average of 7 hours of sunshine per day.
October temperatures in San Francisco
October rainfall
October hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in San Francisco in October 2025.
Other monthly averages
Best places to visit in October
San Francisco weather stats
| Hottest month: | April | 33.4°C 92.1°F |
|---|---|---|
| Driest month: | January | 4mm 0.2ins |
| Sunniest month: | February | 9.6hrs |
| Coldest month: | January | 30.7°C 87.3°F |
| Wettest month: | September | 361mm 14.2ins |
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