Weather in San Francisco in August
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Book now, pay at pickup — compare Hertz, Avis, Budget, Sixt and 800+ rental companies for August in San Francisco.
Compare car hire prices → Affiliate link — we earn a commission at no extra cost to youIn August, San Francisco sees average highs of 19.8°C (67.6°F) and lows of 14.5°C. Conditions are pleasantly mild and very dry, with roughly 12.2 hours of sunshine a day. Weather-wise, this is one of the most reliable months to travel. For the complete picture, see the best time to visit San Francisco — every month compared. Once you know when to go, find your San Francisco packing list at 247PackingList.
Get ready for San Francisco in August
Search flights to San Francisco
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Search Flights →Travel clothing layers
Pack layers — temperatures can vary significantly between day and night.
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Get NordVPN →What to pack for San Francisco in August
- Warm layers
- Light jacket or fleece
- Comfortable walking shoes
Compare all months in San Francisco
| Month | High | Rain | Rating |
|---|---|---|---|
| January | 13.3°C | 98.0mm | 10/10 |
| February | 14.5°C | 33.4mm | 10/10 |
| March | 13.6°C | 88.2mm | 10/10 |
| April | 15.0°C | 21.8mm | 10/10 |
| May | 16.9°C | 15.4mm | 10/10 |
| June | 18.1°C | 2.5mm | 10/10 |
| July | 18.0°C | 0.1mm | 10/10 |
| August | 19.8°C | 0.2mm | 10/10 |
| September | 20.3°C | 4.0mm | 10/10 |
| October | 19.9°C | 42.4mm | 10/10 |
| November | 16.2°C | 42.5mm | 10/10 |
| December | 13.2°C | 182.2mm | 9/10 |
Full month-by-month guide: best time to visit San Francisco →
For facts about United States — currency, language and dialling code — see our United States country guide at 247CountryInfo. Travellers also find it useful to keep a San Francisco travel guide to hand. Check clothing sizes in United States before you shop.
Frequently Asked Questions
Is August a good time to visit San Francisco?
August rates 10/10 for visiting San Francisco — excellent time to visit. Expect average highs of 19.8°C, 0.2mm of rain across the month and about 12.2 hours of daily sunshine.
What is the temperature in San Francisco in August?
In August, San Francisco has average highs of 19.8°C (67.6°F) and average lows of 14.5°C (58.1°F).
Does it rain in San Francisco in August?
Rarely. August is one of the driest times of year in San Francisco, averaging only 0.2mm of rain.
What should I wear in San Francisco in August?
For San Francisco in August (19.8°C highs / 14.5°C lows), pack warm layers plus light jacket or fleece, comfortable walking shoes.
More essentials for San Francisco in August
Packing cubes
Keep the bag organised whatever the weather — compression cubes for every size.
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Compact TSA-friendly kit for peace of mind wherever you travel.
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Climate data sourced from Open-Meteo (open source, open data licence). Monthly averages calculated from 2020–2023 historical data. Weather can be unpredictable — always check a live forecast before travelling.