San Francisco weather
Ten-year climate averages, month by month
San Francisco in august
Current month averages, based on ten years of records. Read the full guide →
San Francisco sits at 37°46′N 122°25′W in United States, in North America. Its climate profile is shaped by these coordinates — and the ten years of records below reveal exactly how each season feels on the ground.
Below, you'll find monthly averages for temperature, rainfall and sunshine, drawn from the Open-Meteo Archive. Every month links to a full guide with what to pack, where to stay, and when to arrive.
The year in weather
San Francisco weather by month
Pick a month for the full climate guide — temperature, rainfall, sunshine, packing tips and hotel deals for San Francisco.
Places that feel like San Francisco in august
San Francisco weather — FAQ
Q01When is the best time to visit San Francisco?
When is the best time to visit San Francisco?
The best months to visit San Francisco are May, June, July, August. Ten-year daily records show these months hold the most stable mix of temperature, rainfall and sunshine.
Q02What is the hottest month in San Francisco?
What is the hottest month in San Francisco?
September runs the highest averages in San Francisco, with typical daytime highs of 22°C (71°F). Plan around midday and consider accommodation with reliable cooling.
Q03What is the coldest month in San Francisco?
What is the coldest month in San Francisco?
December brings the lowest averages, with daytime highs near 14°C (57°F). Layer up and expect shorter daylight hours if you plan sightseeing.
Q04Which month has the most rain in San Francisco?
Which month has the most rain in San Francisco?
December typically records the highest monthly rainfall — around 127mm on average. Plan indoor alternatives and pack proper rain gear if visiting this month.
Q05What is the climate like in San Francisco?
What is the climate like in San Francisco?
San Francisco, United States has mild summers, mild winters, moderate seasonal rainfall. You can read the detailed month-by-month breakdown on this page.