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Draft data. Times, fares and step counts are desk estimates awaiting field checks. Unknown times stay unknown. How we verify

When to go · San Diego

San Diego in August

Mixed month. Outside the best window (Mar–May, Sep–Nov). Across United States: Hot and busy; wildfire smoke in the West, hurricane peak begins in the Southeast.

Key facts

Verdict
Mixed
Temperature
25°C / 19°C
average high / low
Rain days
1
Crowds
High
United States overall
Prices
High
United States overall

Verdict

MixedUnited States month rating

Outside the best window (Mar–May, Sep–Nov). Across United States: Hot and busy; wildfire smoke in the West, hurricane peak begins in the Southeast.

Weather in August

Long-term averages
  • San DiegoHighs around 25 °C, lows around 19 °C, rain on about 1 day
  • 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 →