San Francisco weather in October
October is one of the best months to visit San Francisco: highs of 21°C (70°F) and about 29 mm (1.1 in) of rain on average. Nights average 11°C (51°F) and cloud cover 44% (NASA POWER, 2001–2025 averages). The sea averages 16°C (61°F). It is the 6th driest month of the year and the 5th warmest. Compared with September, it is cooler and wetter; November brings highs of 17°C (62°F) and 62 mm (2.4 in) of rain.
Is October a good time to visit San Francisco?
best month Weather score 86/100.
Yes. October is one of the best months for weather in San Francisco.
Does it rain a lot in San Francisco in October?
No, it is usually dry: about 29 mm (1.1 in) falls in an average October. It is the 6th driest month of the year.
How warm is San Francisco in October?
Days average 21°C (70°F) and nights 11°C (51°F).
San Francisco weather by month
| Month | High | Low | Rain | Cloud | Sea | Weather |
|---|---|---|---|---|---|---|
| January | 13°C (55°F) | 6°C (42°F) | 100 mm | 58% | 13°C (55°F) | least pleasant |
| February | 14°C (57°F) | 7°C (44°F) | 102 mm | 58% | 13°C (55°F) | least pleasant |
| March | 15°C (60°F) | 8°C (46°F) | 82 mm | 58% | 13°C (56°F) | fair |
| April | 17°C (62°F) | 8°C (46°F) | 42 mm | 53% | 13°C (56°F) | fair |
| May | 19°C (65°F) | 9°C (49°F) | 18 mm | 51% | 13°C (56°F) | best |
| June | 21°C (70°F) | 11°C (51°F) | 6 mm | 44% | 14°C (57°F) | best |
| July | 22°C (72°F) | 12°C (53°F) | 1 mm | 56% | 15°C (59°F) | best |
| August | 23°C (73°F) | 12°C (54°F) | 1 mm | 57% | 15°C (60°F) | best |
| September | 23°C (74°F) | 12°C (54°F) | 4 mm | 46% | 17°C (62°F) | best |
| October | 21°C (70°F) | 11°C (51°F) | 29 mm | 44% | 16°C (61°F) | best |
| November | 17°C (62°F) | 8°C (47°F) | 62 mm | 50% | 14°C (57°F) | fair |
| December | 13°C (56°F) | 6°C (43°F) | 138 mm | 59% | 13°C (55°F) | least pleasant |
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis), sea temperature from Open-Meteo Marine. Page updated . How we rate months