Average humidity in San Francisco
- On average, January is the most humid.
- On average, October is the least humid month.
- The average annual percentage of humidity is: 75.0%
The mean monthly relative humidity over the year in San Francisco, United States of America.
Data from nearest weather station: San Francisco, United States of America (0.0 KM).
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.