Weather in San Francisco in August 2024
- August is usually the wettest month of the year in San Francisco;
Average weather
Average temperature in San Francisco in August
The temperature in August is +75°F on average, with a range between a maximum of +84°F during the day and a minimum of +55°F at night.
The average maximum temperature goes up 6% by the end of the month, compared with the beginning of the month, from +72°F to +73°F.
Is San Francisco warm or cold in August?
San Francisco is typically warm in August.
Maximum temperatures go down compared to the previous month from +73°F to +75°F. The minimum temperature also goes up from +55°F to +57°F.
It’s generally warm, but pack a long-sleeve shirt for evenings.
August is one of the warmest months in San Francisco, here is the comparison with other months:
Climate in San Francisco in August
| July | August | September | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +73°F | +75°F | +75°F | ||||
| Min. temperature | ||||||
| +50°F | +50°F | +48°F | ||||
| Max. temperature | ||||||
| +95°F | +93°F | +99°F | ||||
| Rainfall | ||||||
| 0 mm | 1 mm | 4 mm | ||||
| Wind | ||||||
| 2 m/s | 2 m/s | 2 m/s | ||||
| Humidity | ||||||
| 82% | 83% | 81% | ||||
| Air pressure | ||||||
| 1012 HPa | 1012 HPa | 1012 HPa | ||||
| Sunny days | ||||||
| 7 | 7 | 10 | ||||
| Cloudy days | ||||||
| 24 | 24 | 19 | ||||
| Rainy days | ||||||
| 0 | 0 | 1 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
August weather is still as good as in July. It’s getting warmer as August arrives. The average maximum temperature goes up from +73°F to +75°F during the day. Prepare for more rain. Average rainfall goes from 0 mm to 1 mm. Humidity rises from 82% to 83%. The average wind speed doesn’t change much during August, staying around 2 m/s. The amount of sunny days stay about the same, averaging 7 sunny days during the month.
September brings much the same weather, it remains good.
Wind
The average wind speed is 1 m/s getting up to 2 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in San Francisco is gradually decreasing during August, going from 2 m/s to 1 m/s over the course of the month.
How was the weather last August in San Francisco?
Climate Change Over the Years
The climate in San Francisco in August has not changed that much over the last 43 years.
The average temperature was the lowest in 2016 (+79°F) and the highest in 1998 (+88°F). The driest year was 1990 with only 0 mm of rainfall, and the wettest year was 2022 with 0 mm.
FAQ
Is August a good time to visit San Francisco?
Can you sunbathe in San Francisco in August?
Is San Francisco rainy in August?
Is it sunny in San Francisco in August?
Other cities in USA
Monthly weather in San Francisco
Source of the data
For this page, we’ve looked at the typical weather in San Francisco, based on historical hourly weather data from January 1, 1979, to December 31, 2022.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.