San Francisco in August
Outside Lands month
- Temperature
- 13–20°C
- Crowds
- High
- Prices
- $$$$
+The Outside Lands festival.
–Foggy, cool and busy.
August is still foggy, and the Outside Lands music festival fills Golden Gate Park.
San Francisco vs San Diego in August
San Diego edges it in August. San Francisco averages 13–20°C with high crowds; San Diego 20–25°C with high crowds.
By Daan · Last reviewed October 2026
San Francisco and San Diego
The verdict for August
- WeatherSan Diego has the better weather6/10 vs 9/10
- CrowdsVery similarHigh vs High
- PricesVery similar$$$$ vs $$$$
- OverallSan Diego comes out ahead5.5/10 vs 6.5/10
San Diego in August
Warmest beach weather
- Temperature
- 20–25°C
- Crowds
- High
- Prices
- $$$$
+Warm water and sunny days.
–Crowded beaches.
August has the best beach weather of the year, with crowds to match.
Scores and crowd levels are my own judgement; temperatures are monthly averages. Higher scores are better: quieter, cheaper and more pleasant.
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