Climate of San Francisco, California, USA
Point-value climate at San Francisco (California, United States of America). Population approximately 3,450,000.
Located in California, United States of America, San Francisco has a mild oceanic climate. Population approximately 3,450,000. Monthly average temperatures range from 10.1°C / 50.2°F in January to 17.8°C / 64°F in September, with rainfall varying from 2 mm / 0.1 in (July) to 150 mm / 5.9 in (January) — about 725 mm / 28.5 in across the year. These are point-value climate normals sampled at San Francisco's coordinates — often quite different from the surrounding region's area-weighted average.
Best sunny months: May, June, July, August, September, October.
Best time to visit San Francisco →
| Month | Temperature | Rainfall | Matches |
|---|---|---|---|
| January | 10.1°C50.2°F | 150 mm5.9″ | — |
| February | 11.8°C53.2°F | 131 mm5.2″ | — |
| March | 12.7°C54.9°F | 113 mm4.4″ | — |
| April | 13.8°C56.8°F | 45 mm1.8″ | — |
| May | 15.1°C59.2°F | 15 mm0.6″ | Sunny & Mild |
| June | 16.4°C61.5°F | 5 mm0.2″ | Sunny & Mild |
| July | 16.7°C62.1°F | 2 mm0.1″ | Sunny & Mild |
| August | 17.1°C62.8°F | 3 mm0.1″ | Sunny & Mild |
| September | 17.8°C64°F | 8 mm0.3″ | Sunny & Mild |
| October | 16.6°C61.9°F | 40 mm1.6″ | Sunny & Mild |
| November | 13.2°C55.8°F | 100 mm3.9″ | — |
| December | 10.4°C50.7°F | 113 mm4.4″ | — |
Frequently asked questions
What is the best time to visit San Francisco?
The months with the sunniest, driest weather are May, June, July, August, September, October. San Francisco's warmest month is September at an average of 17.8°C / 64°F, and its driest month is July with about 2 mm / 0.1 in of rain.
What is the climate of San Francisco?
San Francisco, in California, United States of America, has monthly average temperatures ranging from 10.1°C / 50.2°F in January to 17.8°C / 64°F in September. Annual rainfall is approximately 725 mm / 28.5 in, with the wettest month being January (150 mm / 5.9 in) and the driest July (2 mm / 0.1 in).
What is the average temperature in San Francisco in September?
The average temperature in San Francisco in September is 17.8°C / 64°F, with rainfall of about 8 mm / 0.3 in — the warmest month of the year.
When is the driest month in San Francisco?
The driest month in San Francisco is July, with about 2 mm / 0.1 in of average monthly rainfall. Average temperature that month is 16.7°C / 62.1°F.
When is the wettest month in San Francisco?
The wettest month in San Francisco is January, with approximately 150 mm / 5.9 in of average monthly rainfall.