San Francisco weather in August
Long-run climate averages for San Francisco, CA in August, plus what the forecast models say for the days ahead.
In August, San Francisco averages 70°F by day and 57°F at night. The wettest month is usually January.
August in San Francisco averages a daytime high of 70°F and an overnight low of 57°F, which reads as mild for this part of the world. It is among the three warmest months of the year here. Across the whole year San Francisco sees roughly 33 inches of precipitation.
Climate averages tell you what to pack. They do not tell you what next Tuesday looks like — for that, see the live San Francisco forecast with every model compared and how much they currently agree.
San Francisco weather by month
what to expect in San Francisco through the yearHere is San Francisco's typical weather in each month: the average daytime high and overnight low in °F, how each month feels, and the wettest month marked. Use it to plan any trip to San Francisco by season.