What’s the climate like in San Francisco?
The current climate of San Francisco features average monthly temperatures ranging from highs of 24°C during the day to lows of 15°C. The average yearly temperature is around 20°C. At night, temperatures in the colder months average around 8°C and in the warmer months around 15°C.
The highest temperature recorded in San Francisco in recent years was 38°C in September 2017. The lowest daytime temperature recorded was 8°C in December 2015.
On average, San Francisco receives 441 mm of precipitation each year. For comparison, London gets 701 mm of precipitation annually.
Best time to visit San Francisco?
The best time to visit San Francisco for sunny weather is April through November. During this period, you'll have good temperatures and not too much rain, making it a great time to visit San Francisco. In the other months of the year, there's too much rain or the temperature isn't ideal for a visit if you want sunny and pleasant weather.
Climate Table of San Francisco
The climate table of San Francisco shows the average temperatures, precipitation, and UV index per month. The table gives an overview of the average day and night temperatures in degrees Celsius, the total amount of precipitation in millimetres, the total snowfall in centimetres, and the UV index for each month. Precipitation is always measured as water, even if it's snow or hail.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
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| Temp. max (°C) | 15 | 16 | 17 | 19 | 20 | 22 | 22 | 23 | 24 | 23 | 18 | 15 |
| Temp. min (°C) | 9 | 9 | 10 | 11 | 12 | 14 | 15 | 16 | 15 | 13 | 10 | 9 |
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| Precipitation (mm) | 82 | 84 | 65 | 26 | 8,1 | 1,8 | 0,2 | 0,4 | 2,5 | 20 | 37 | 114 |
| UV Index | 3 | 5 | 5 | 6 | 6 | 7 | 7 | 6 | 6 | 5 | 4 | 2 |
Click on the month name to see more weather details, like daily averages, temperatures, and precipitation for the past years in that month.
- Average yearly temperature: 20°C
- Highest temperature: 24°C in September
- Lowest temperature: 15°C in January and December
- Precipitation: 441 mm per year, averaging 37 mm per 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, 84 mm in February and 82 mm in January
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Table of Contents
Average Temperature per Month in San Francisco
This graph shows the average maximum temperatures per month in San Francisco, California. The temperatures are shown in degrees Celsius and the average is calculated based on the recorded temperatures per month from past years.
Average Precipitation per Month in San Francisco
This graph shows how much precipitation San Francisco, California, gets on average per month. Precipitation is always measured as water, even if it's snow or hail. This makes it easy to compare how much has fallen, regardless of the form of precipitation. The amount of precipitation is measured in millimetres and the average is calculated based on the recorded precipitation per month from past years.
Average UV Index per Month in San Francisco
This graph shows the average UV index per month in San Francisco, California. The UV index indicates the intensity of ultraviolet radiation and ranges from 0 to a maximum of 11.
Yearly Temperature in San Francisco
This graph shows the average yearly temperature in San Francisco, California. The yearly temperature, expressed in degrees Celsius, is the average of all twelve monthly temperatures summed up for that year.
Total Yearly Precipitation in San Francisco
This chart shows the total yearly precipitation in San Francisco, California, over the past few years. The total yearly precipitation, measured in millimetres, is the sum of all the rain that fell in the twelve months of that year.
Weather experiences in San Francisco
The weather in San Francisco is rated an average of 0 out of 5 stars by 6 visitors. Have you been to San Francisco? Share your weather experience to help other visitors.
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Average Weather in San Francisco by Month
Click on a month below to see detailed weather info for San Francisco. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
