Average water temperature in San Francisco (fahrenheit)
- On average, August has the hottest water temperature.
- On average, March has the coldest water temperature.
Show the average water temperatures in San Francisco in Celsius »
More climate information
Weather and Climate offers all the information you need to know about the climate in San Francisco.
We collected past weather data from many thousand weather stations around the world. So find on this website the historical weather averages in other cities in United States of America and climate and forecast data for all other countries in the world.