Harbor Island Weather Forecast

    • 59
    • 72

    Mostly Sunny

    • 60
    • 75

    Partly Sunny

    • 59
    • 75

    Mostly Cloudy

    • 59
    • 74

    Mostly Cloudy

    • 59
    • 71

    Mostly Cloudy

    • 58
    • 69

    Mostly Cloudy

    • 59
    • 69

    Partly Sunny

Today 19 May San Diego County Coastal Areas

Partly cloudy this morning. Becoming mostly sunny. Warmer. Highs 70 to 73 near the coast to 77 inland. Areas of Winds west to 10 Mph.

Tonight 19 May San Diego County Coastal Areas

Mostly clear this evening. Becoming partly cloudy. Lows 53 to 58. Areas of Winds west to 10 Mph this evening becoming light.

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Harbor Island Temperature Statistics

May Temperature

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

  • Lowest 4 May, 2025

    57.7 °F

  • Average May

    64.6 °F

  • Highest 10 May, 2025

    85.6 °F

Climate (2020–Present)

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

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  • Average Low 2020–2025

    57.9 °F

  • Average 2020–2025

    63.9 °F

  • Average High 2020–2025

    70.9 °F
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