Climate in San Francisco (California), United States of America

The graphs below show the monthly weather averages over the year.
* Data from weather station: San Francisco, United States of America.

Average day and night temperature

The mean minimum and maximum temperatures over the year. Show in Fahrenheit

Average min and max temperatures in San Francisco, United States of America   Copyright © 2020 www.weather-and-climate.com

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Monthly hours of sunshine

The average monthly total hours of sunshine over the year

Average monthly sunhours in San Francisco, United States of America   Copyright © 2020 www.weather-and-climate.com

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Daily percent of sunshine

The mean percent of sunhours during the day over the year

Average percent of sunshine in San Francisco, United States of America   Copyright © 2020 www.weather-and-climate.com

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Average water temperature

The mean water temperature over the year. Show in Fahrenheit

Average water temperatures in San Francisco, United States of America   Copyright © 2020 www.weather-and-climate.com

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Monthly precipitation

The mean monthly precipitation over the year, including rain, snow, hail etc. Show in Inches

Average precipitation (rain/snow) in San Francisco, United States of America   Copyright © 2020 www.weather-and-climate.com

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Monthly rainy days

The average number of days each month with rain, snow, hail etc.

Average rainy days (rain/snow) in San Francisco, United States of America   Copyright © 2020 www.weather-and-climate.com

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Average humidity

The mean monthly relative humidity over the year

Average relative humidity in San Francisco, United States of America   Copyright © 2020 www.weather-and-climate.com

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Average wind speed

The mean monthly wind speed over the year (in meters per second)

Average wind speed in San Francisco, United States of America   Copyright © 2020 www.weather-and-climate.com

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Weather Forecasts for San Francisco (California)

WED Sep 30
26°C | 15°C

Partly cloudy

THU Oct 01
30°C | 17°C

Sunny

FRI Oct 02
28°C | 20°C

Sunny

The best time of year to visit San Francisco in United States of America

San Francisco has a Mediterranean climate which means warm and dry summers with mild winters. It's the perfect city in the US to visit in autumn or early spring. Most rain is seen from November until March, but with more than 150 hours of sunshine you could still consider visiting San Francisco during those months.

During winter the evening temperatures can drop, but almost never below zero.

Here are some average weather facts we collected from our historical climate data:

  • During the month of August, September and October you are most likely to experience good weather with pleasant average temperatures that fall between 20 degrees Celsius (68°F) and 25 degrees Celsius (77°F).
  • The months of January, February, March, November and December have a high chance of precipitation.
  • San Francisco has dry periods in May, June, July, August and September.
  • The warmest month is September with an average maximum temperature of 21°C (69°F).
  • The coldest month is January with an average maximum temperature of 14°C (57°F).
  • December is the most wet month. This month should be avoided if you are not a big fan of rain.
  • July is the driest month.
No idea where to travel to this year? We now have a tool which suggests which destination suits your ideal climate conditions. Find out where to go here.