coastal destination · warmest in Aug · sea ~14°C in July · mid-range
Open South San Francisco on the live value map →| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg °C | 10 | 11 | 11 | 12 | 14 | 15 | 16 | 17 | 17 | 16 | 12 | 10 |
| Sea °C | 12 | 12 | 12 | 12 | 12 | 12 | 14 | 15 | 15 | 14 | 13 | 12 |
| Rain (days) | 151 | 125 | 115 | 48 | 14 | 5 | 2 | 3 | 9 | 42 | 104 | 117 |
Warmest month: Aug. Driest: Jul.
No mild-temperature months (18–28°C) — expect extremes.