San Francisco Climate by Month
San Francisco has a steady warm climate throughout the year.
It is also known for its large amounts of rainfall.
Let’s explore the climate details in depth to provide you with a complete overview.
Average day and night temperature
In San Francisco temperatures are generally consistent throughout the year. Typically, daytime temperatures range from a comfortable 23°C in August to a pleasant 22°C in the coolest month, January. Nights are cooler, with temperatures generally dropping to 13°C, particularly during the colder months.
The mean minimum and maximum temperatures throughout the year
Precipitation and rainy days
San Francisco experiences significant rainfall throughout the year, averaging 3260 mm of precipitation annually. The climate in San Francisco shows significant variation throughout the year. Expect heavy rainfall in April, with an average of 385 mm of precipitation over 18 rainy days. In contrast, August offers drier and sunnier days, with around 173 mm of rainfall over 14 rainy days.The mean monthly precipitation over the year, including rain, hail and snow
The average number of days each month with precipitation
Sunshine over the year
For those who appreciate different seasons, San Francisco serves as an ideal destination. Expect longer, more sun-filled days in January with an average of 5.2 hours of sunshine daily, and embrace the darker days in May, offering only 2.8 hours of daily sunlight.Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Average humidity
The relative humidity is moderate throughout the year in San Francisco.
Relative humidity over the year
The best time of year to visit San Francisco in Colombia
The average rainfall figures in San Francisco are quite high. Throughout the year, you have a chance of prolonged precipitation. So no matter what time of year you go, you will always have to deal with a high number of rainy days. This makes it more challenging to point out the best time of year to visit. If we needed to pick one month we would choose January which is the sunniest month of the year.Other facts from our historical weather data:
It has mild temperatures all year round ranging between 21°C and 23°C.
August has an average maximum temperature of 23°C and is the warmest month of the year.
The coldest month is January with an average maximum temperature of 22°C.
April tops the wettest month list with 385 mm of rainfall.
August is the driest month with 173 mm of precipitation.
January is the sunniest month with an average of 156 hours of sunshine.
No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.
