Ideal weather days in San Francisco
The best time to visit San Francisco for warm, dry weather is September and October, with about 23 such days a month.
How many days here suit you?
Set your ideal day. Each day measured at San Francisco's weather station in 2023–2025 is checked against it.
They're most common in September and October.
This station doesn't record cloud cover, so the sky setting is left out here.
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Your ideal days in San Francisco, month by month
Why the other days don't count
- Too windy109
- Too cold106
- Too wet50
- Too hot4
A day can fail more than one test.
Warm and dry, beach and mild days
With the Warm & dry preset (a high of 18–33 °C, no more than 1 mm of rain, wind under 20 km/h), San Francisco averaged 162 days a year in 2023–2025. Every number here is counted from real measured days in the United States, not from climate averages.
Beach days (a high of 26–35 °C, almost no rain, mostly sunny) are most common in July, August and October (up to 7 a month, 30 a year). Mild, still days (16–26 °C, light wind) are most common in November and December (up to 16 a month, 62 a year).
What spoils the other days
Most of the days that don't count are windy (mean wind over 20 km/h): 109 a year, mostly in April to August. Another 106 are too cold (a high under 18 °C), mostly in December to March. A day can fail more than one test.
San Francisco weather, month by month
| Month | Typical high | Rain days | Windy days | Clear days | Warm & dry days |
|---|---|---|---|---|---|
| January | 16 °C 61 °F | 9 | 3 | 12 | 6 of 31 |
| February | 16 °C 61 °F | 10 | 5 | 6 | 7 of 28 |
| March | 16 °C 61 °F | 14 | 10 | 5 | 6 of 31 |
| April | 19 °C 66 °F | 3 | 12 | 11 | 13 of 30 |
| May | 20 °C 68 °F | 2 | 16 | 14 | 14 of 31 |
| June | 21 °C 70 °F | 0 | 18 | 14 | 12 of 30 |
| July | 22 °C 72 °F | 0 | 15 | 18 | 16 of 31 |
| August | 24 °C 74 °F | 1 | 16 | 16 | 15 of 31 |
| September | 24 °C 74 °F | 0 | 8 | 17 | 23 of 30 |
| October | 24 °C 74 °F | 0 | 4 | 16 | 23 of 31 |
| November | 20 °C 68 °F | 7 | 3 | 14 | 18 of 30 |
| December | 17 °C 63 °F | 11 | 1 | 10 | 10 of 31 |
| Year | 56 | 109 | 152 | 162 of 365 |
Typical high is the median daily maximum. A rain day has 1 mm or more; a windy day a mean wind above 20 km/h; a clear day a daytime cloud cover of 2/8 or less on average (9:00–17:00). Days are averaged over 2023–2025 and scaled to the length of each month.
Year by year
- 2023 168 warm, dry days
- 2024 147 warm, dry days
- 2025 incomplete (8 of 12 months)
Questions
When is the best time to visit San Francisco for good weather?
The best time to visit San Francisco for warm, dry weather is September and October, with about 23 such days a month. Beach days (a high of 26–35 °C, almost no rain, mostly sunny) are most common in July, August and October (up to 7 a month, 30 a year). Counted from measured days at San Francisco International Airport station, 2023–2025.
Does it rain a lot in San Francisco?
On average 56 days a year had 1 mm of rain or more in 2023–2025. The wettest month was March (14 rain days), the driest June (0).
How many sunny days does San Francisco get a year?
About 152 days a year had mostly clear skies (daytime cloud cover of 2/8 or less on average, 9:00–17:00), most of them in July (18).
How warm does San Francisco get?
The median daily high ranged from 16 °C (61 °F) in January to 24 °C (74 °F) in August.
Nearby
- Sacramento120 km169 days
- Los Angeles560 km296 days
- Las Vegas670 km126 days
- San Diego740 km317 days
- Honolulu3890 km224 days
More cities in the United States
- Tijuana 311 days
- Orlando 203 days
- Tampa 194 days
- Miami 181 days
- Charlotte 177 days
- Atlanta 168 days
- Phoenix 166 days
- San Antonio 157 days
- Denver 151 days
- Nashville 150 days
- New Orleans 144 days
- St. Louis 143 days
- Seattle 142 days
- Houston 141 days
- Kansas City 135 days
- Austin 134 days
- Albuquerque 132 days
- Detroit 131 days
- Dallas 129 days
- New York 129 days
- Chicago 120 days
- Minneapolis 120 days
- Boise 117 days
- Billings 116 days
- Boston 116 days
- Salt Lake City 107 days
- Fairbanks 81 days
- Anchorage 55 days
- Juneau 45 days
Where is the best climate in the United States?
Open San Francisco on the map Set your own temperature, rain and wind limits.
Source: San Francisco International Airport weather station (72494023234), 17 km from the centre of San Francisco, 3 m above sea level. Daily records from NOAA's Global Surface Summary of the Day, 2023–2025; 89% of days have a complete record. A single station may not represent every part of a city, and three years is a short record.