The climate of San Francisco
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.
| 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 |
| Rainfall (mm) | 82 | 63 | 65 | 26 | 8,1 | 1,8 | 0,2 | 0,4 | 2,5 | 20 | 37 | 114 |
Table of contents
- 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 |
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Temperature by month in San Francisco
This graph shows the average high temperatures in degrees Celsius for each month in San Francisco, California
Rainfall by month in San Francisco
This graph shows the average monthly rainfall in millimeters in San Francisco, California.
UV index by month in San Francisco
This graph shows the average 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 total rainfall in San Francisco
This graph shows the average yearly rainfall in millimeters 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.