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What is the climate like in San Francisco?

The climate of San Francisco has an average yearly temperature of 20°C. Throughout the year, the average monthly temperature can drop to 15°C and rise to 24°C.

Annually, about 420 mm of rain falls. This gives a good overview of how much rain to expect in San Francisco.

The best time to visit San Francisco is April until November. During this period, you will experience pleasant temperatures and not too much rain, making it ideal to visit San Francisco.

Temperature 15 to 24°C
Rain 420 mm
The climate of San Francisco
  • Average yearly temperature: 20°C
  • Highest temperature: 24°C in September
  • Lowest temperature: 15°C in January and December
  • Rainfall: 420 mm per year, averaging 35 mm by month
  • Driest months: 0,2 mm in July, 0,4 mm in August and 1,8 mm in June
  • Wettest months: 114 mm in December, 82 mm in January and 65 mm in March

Climate table San Francisco

The climate table for San Francisco shows the average temperatures, rainfall, and UV index by month.

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daytime temperature (°C) 15 17 17 19 20 22 22 23 24 23 18 15
Nighttime temperature (°C) 9 9 10 11 12 14 15 16 15 13 10 9
Rainfall (mm) 82 63 65 26 8,1 1,8 0,2 0,4 2,5 20 37 114
UV Index 3 4 5 6 6 7 7 6 6 5 4 2
Best month No No No Yes Yes Yes Yes Yes Yes Yes Yes No

Temperature by month in San Francisco

This graph shows the average high temperatures in degrees Celsius for each month in San Francisco, California

Temperature by month in San Francisco, California

Rainfall by month in San Francisco

This graph shows the average monthly rainfall in millimeters in San Francisco, California.

Rainfall by month in San Francisco, California

UV index by month in San Francisco

This graph shows the average UV index by month in San Francisco, California.

UV index by month in San Francisco, California

Yearly temperature in San Francisco

This graph shows the average yearly temperature in San Francisco, California, measured in degrees Celsius.

Yearly temperature in San Francisco, California

Yearly total rainfall in San Francisco

This graph shows the average yearly rainfall in millimeters in San Francisco, California.

Rainfall per year in San Francisco, California

Weather experiences in San Francisco

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Average weather in San Francisco by month

Click on a month below to see in detail how the weather typically is in San Francisco and what to expect. Based on the historical weather data of San Francisco, you can view the average temperature, rainfall, wind, and UV index for each day of the month.