When to go · San Diego
San Diego in July
Mixed month. Outside the best window (Mar–May, Sep–Nov). Across United States: Peak season: parks full, 4 July crowds, 40 °C (104 °F)+ in the desert, humid East. Alaska and the Pacific Northwest are at their best.Mixed month. Outside the best window (Mar–May, Sep–Nov). Across United States: Peak season: parks full, 4 July crowds, 104 °F (40 °C)+ in the desert, humid East. Alaska and the Pacific Northwest are at their best.
Key facts
- Verdict
- Mixed
- Temperature
- 24°C (75°F)75°F (24°C) / 19°C (66°F)66°F (19°C)
- average high / low
- Rain days
- 1
- Crowds
- High
- United States overall
- Prices
- High
- United States overall
Verdict
Outside the best window (Mar–May, Sep–Nov). Across United States: Peak season: parks full, 4 July crowds, 40 °C (104 °F)+ in the desert, humid East. Alaska and the Pacific Northwest are at their best.Outside the best window (Mar–May, Sep–Nov). Across United States: Peak season: parks full, 4 July crowds, 104 °F (40 °C)+ in the desert, humid East. Alaska and the Pacific Northwest are at their best.
Is another month better than July?
July is rated mixed. These months rate higher:
Weather in July
- San DiegoHighs around 24 °C (75 °F), lows around 19 °C (66 °F), rain on about 1 dayHighs around 75 °F (24 °C), lows around 66 °F (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.
Festivals and holidays
Dates as our data lists them. Moving holidays (lunar and Islamic calendars, Easter) shift every year: check the date for your year before you build a trip on it.
Independence Day big impact
4 Jul · United States
Fireworks and parades; parks, beaches and flights busy.
Crowds and prices
- Crowds · United States overall
- High
- Prices · United States overall
- High
United States overall: Peak season: parks full, 4 July crowds, 40 °C+ in the desert, humid East. Alaska and the Pacific Northwest are at their best.
High-price month: see what to book ahead.
Compare two months
Weather, crowds and prices for any two months in San Diego, side by side.
Verdict
Jul: Mixed
Mar: Great (better)
Daytime high
Jul: 24 °C (75 °F)75 °F (24 °C)
Mar: 19 °C (66 °F)66 °F (19 °C)
Night low
Jul: 19 °C (66 °F)66 °F (19 °C)
Mar: 13 °C (55 °F)55 °F (13 °C)
Rain days
Jul: 1 (better)
Mar: 6
Crowds
Jul: High
Mar: Medium
Prices
Jul: High
Mar: Medium
Festivals listed
Jul: 1
Mar: 2
July: Outside the best window (Mar–May, Sep–Nov). Across United States: Peak season: parks full, 4 July crowds, 40 °C+ in the desert, humid East. Alaska and the Pacific Northwest are at their best.
March: Inside San Diego's best window: Mar–May, Sep–Nov.
San Diego: figures are long-term averages from this guide, not a forecast.
What to pack
Nothing unusual for the weather this month.