Harbor Island Weather Forecast

    • 68
    • 78

    Increasing Clouds

    • 66
    • 77

    Partly Sunny

    • 66
    • 76

    Mostly Cloudy

    • 66
    • 76

    Mostly Cloudy

    • 65
    • 77

    Mostly Cloudy

    • 64
    • 76

    Mostly Cloudy

Today 24 Aug San Diego County Coastal Areas

Partly cloudy with patchy fog this morning. Becoming mostly sunny. Highs 76 to 80 near the coast to 82 to 87 inland. Areas of Winds west to 10 Mph.

Tonight 24 Aug San Diego County Coastal Areas

Partly cloudy. Patchy fog overnight. Lows 65 to 68. Areas of Winds west 10 Mph in the evening becoming light.

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Harbor Island Temperature Statistics

August Temperature

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

  • Lowest 1 August, 2025

    63.6 °F

  • Average August

    69.5 °F

  • Highest 21 August, 2025

    80.1 °F

Climate (2020–Present)

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

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  • Average Low 2020–2025

    57.8 °F

  • Average 2020–2025

    63.9 °F

  • Average High 2020–2025

    70.8 °F
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