Weather in San Francisco in August
San Francisco, United States averages a high of 21.3°C (70.3°F) and low of 13.5°C (56.3°F) in August, with 0 rain days and 12.7 hours of daily sunshine. Travel score: 88.8/100 (Excellent). The best time to visit San Francisco is September.
High
21°C70°F
Low
14°C56°F
🌧️
0
rain days
☀️
12.7
hrs/day sunshine
💧
78%
humidity
89— Excellent
August in San Francisco is mild and dry — ideal for sightseeing and outdoor activities.
What are the average temperatures in San Francisco?
How much does it rain in San Francisco in August?
San Francisco receives an average of 1mm of rainfall across 0 rainy days in August. The annual total is 499.2mm.
What should I pack for San Francisco in August?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
🧥
Mix of light and warm layers
Mild temperatures around 21°C
🧴
Sunscreen SPF 30+
13 hours of sunshine daily
🕶️
Sunglasses
Protect your eyes from bright sun
Traveling to United States in August?
Don't let a public holiday surprise you — restaurants, shops, and attractions may be closed.
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Data based on 1994–2024 averages · Last updated: 2024-12-31