Normal weather for San Francisco in August
It's hot in August in San Francisco with an average temperature of 32°C. Temperatures this month range from a low of 31°C to a high of 33°C. At night, you can expect temperatures between 24°C and 25°C.
In August, there is an average of 164 mm of precipitation, spread over 19 days. The wind speed is around 3 Bft, mostly coming from the East.
San Francisco in August |
New York | ||
|---|---|---|---|
 Average Temperature |
32°C | 30°C | |
 High Temp |
33°C | 31°C | |
| Low Temp |
31°C | 28°C | |
 Total Precipitation |
164 mm | 79 mm | |
| Rainy Days |
19 days | 13 days | |
Start of August
The month of August starts in San Francisco with hot temps, averaging around 33°C during the day and nights around 25°C. You can expect regular precipitation, but there will also be some sunny days in the early part of the month. Light clothing like shorts or a dress, and a hat and sunglasses are perfect.
Mid August
By mid-August, daytime temps drop to around 32°C, with nights around 25°C. During this part of the month, you might see regular precipitation, but there will also be some sunny days. Light clothing like shorts or a dress, and a hat and sunglasses are perfect.
End of August
By the end of August, the average daytime temperature in San Francisco is around 32°C, while nighttime temps are about 25°C. There’s a significant chance of many days with precipitation. Light clothing like shorts or a dress, and a hat and sunglasses are perfect.
UV index
The UV index is a maximum of 9 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Is August a good time to visit San Francisco?
Looking for sun? August isn’t a good month to be in San Francisco. The temperature is nice, but there’s too much chance of rain.
The hurricane season in San Francisco runs from June to November.
Temperature records for San Francisco in August
Check out the climate of San Francisco for all months and discover the best travel time
July
Daily Temperature in August in San Francisco
This chart shows the average daily high and low temperatures in August for San Francisco, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in August in San Francisco
The chart below shows the average daily precipitation in August for San Francisco, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for August, you can expect about 19 days of precipitation in San Francisco.
Daily UV Index in August in San Francisco
This chart shows the average daily UV index in August in San Francisco, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in August in San Francisco Over the Years
This chart shows the average temperature in August in San Francisco, measured in degrees Celsius, over the past few years.
Total Precipitation in August in San Francisco Over the Years
This chart shows the average precipitation in August in San Francisco, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Daily Climate in August for San Francisco
Click on any day in August to get detailed info about the usual weather on that day in San Francisco. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in August in San Francisco
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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.
Or check out the climate of San Francisco for all months at once
