San Francisco Weather in October
San Francisco in October sees pleasant daytime temperatures of 22°C (72°F) and nighttime lows of 12°C (54°F). Low rainfall is typical, with around 23 mm (0.9 in) for the month.
Rainfall in San Francisco in October
Analyzing past climate data, one can expect approximately 4 days of rain, averaging 23 mm (0.9 in). When rain does fall, showers tend to be light and brief. Most days will be dry.
Temperature in San Francisco in October
October is a perfect month in San Francisco, with 22°C (72°F) during the day and 12°C (54°F) at night. Even when the weather is stable, mornings and evenings can still feel distinctly cool. With lows of 12°C (54°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.
Sunshine in San Francisco in October
Expect a lot of sunshine this month, with about 243 hours of sun. These sunny conditions add to the overall experience.
Wind Speed in San Francisco in October
Wind speeds average 4 m/s (8 knots) during October. At this speed, expect moderate winds that can raise dust and move small branches. Since this is an average, some days have gentle light winds while others experience stronger breezes that are quite noticeable.
Average water temperature in October
At 14°C (57°F), the water is cool but manageable for those who don't mind a bit of a shock getting in. Most people adjust after a few minutes.If you're a fan of comfortable temperatures and drier conditions, October is a great time to visit.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our San Francisco's climate page.
San Francisco Temperature in October
Min Temperature
12°C (54°F)
Max Temperature
22°C (72°F)
Water Temperature
14°C (57°F)
Chance of Rain
14%
Precipitation
23 mm (0.9 in)
Rainy days
4 days
Humidity
71%
Windspeed
4 m/s (8 knots)
Sunshine
243 hours
Percentage Sunshine
71%
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in San Francisco typically drop from around 23°C (73°F) at the start of October to approximately 19°C (66°F) by the end. Nights are cool, with lows typically ranging from 11°C (52°F) to 14°C (57°F).
Average temperatures in October
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in October
Historical weather for San Francisco in October
Browse day-by-day weather records for San Francisco spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
San Francisco historical weather extremes in October
Based on 49 years of weather observations in San Francisco between 1976 and 2025, these are the recorded extremes.
- The warmest day in October was on October 6, 2024, with a maximum of 37°C (99°F).
- The coldest October day was on October 30, 1996, with a maximum of 13°C (55°F).
- San Francisco registered its coldest October night on October 23, 1981, with temperatures dropping to 6°C (43°F).
Best Places in the United States of America in October
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in October →
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What to Wear in San Francisco in October
For San Francisco in October, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. Some rain is possible, so pack something to handle light showers. With water temperatures around 14°C (57°F), the water is quite cold for swimming. You can skip the swimwear unless you're particularly tough. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in San Francisco in October
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our San Francisco's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full San Francisco climate overview or explore weather in the United States of America.
