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When to go · San Francisco

San Francisco in August

Avoid month. Listed as a month to avoid: Jun–Aug (foggy/windy), Jan–Feb (rainy).

Key facts

Verdict
Avoid
Temperature
22°C / 15°C
average high / low
Rain days
0
Crowds
High
United States overall
Prices
High
United States overall

Verdict

AvoidBest and avoid months for San Francisco

Listed as a month to avoid: Jun–Aug (foggy/windy), Jan–Feb (rainy).

Weather in August

Long-term averages
  • San FranciscoHighs around 22 °C, lows around 15 °C, rain on about 0 days
  • California coast, United States · San Francisco, Los Angeles, San Diego, Big Surbest weather

    Mild all year; San Francisco is foggy and cool in summer; wildfire smoke possible June–November; winter storms can close Highway 1 at Big Sur.

Crowds and prices

Crowds · United States overall
High
Prices · United States overall
High

United States overall: Hot and busy; wildfire smoke in the West, hurricane peak begins in the Southeast.

High-price month: see what to book ahead.

What to pack

Nothing unusual for the weather this month.

Build the full packing list for your trip →

Across United States in August →