Harbor Island Weather Forecast

    • 72
    • 83

    Increasing Clouds

    • 72
    • 85

    Patchy Fog

    • 73
    • 85

    Patchy Fog

    • 73
    • 86

    Partly Sunny

    • 72
    • 83

    Partly Sunny

    • 69
    • 81

    Partly Sunny

    • 70
    • 79

    Partly Sunny

Today 25 Aug San Diego County Coastal Areas

Partly cloudy with patchy fog this morning. Becoming mostly sunny. Highs 81 to 86 near the coast to 90 to 95 inland. Light Winds becoming west 10 Mph this afternoon.

Tonight 25 Aug San Diego County Coastal Areas

Mostly clear this evening. Becoming partly cloudy. Patchy fog overnight. Lows 68 to 72. Light Winds.

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Harbor Island Temperature Statistics

August Temperature

San Diego, San Diego International-Lindbergh Field (0.6 miles)

  • Lowest 5 August, 2026

    68.6 °F

  • Average August

    75.5 °F

  • Highest 23 August, 2026

    86 °F

Climate (2021–2026)

San Diego, San Diego International-Lindbergh Field (0.6 miles)

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  • Average Low 2021–2026

    58.1 °F

  • Average 2021–2026

    64.2 °F

  • Average High 2021–2026

    71.1 °F
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