San Diego Bay Weather Forecast

    • 65
    • 70

    Decreasing Clouds

    • 67
    • 71

    Partly Sunny

    • 68
    • 71

    Mostly Cloudy

    • 67
    • 70

    Partly Sunny

    • 68
    • 70

    Partly Sunny

    • 69
    • 72

    Partly Sunny

Today 18 Sep San Diego County Coastal Areas

Partly cloudy in the morning. Becoming mostly sunny. Highs 73 to 77. Light Winds becoming west 10 to 15 Mph in the afternoon.

Tonight 18 Sep San Diego County Coastal Areas

Mostly clear in the evening. Becoming partly cloudy. Lows 58 to 63. Areas of Winds northwest to 10 Mph in the evening becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

San Diego Bay Temperature Statistics

September Temperature

San Diego, North Island, Naval Air Station (3.7 miles)

  • Lowest 3 September, 2026

    63 °F

  • Average September

    74.1 °F

  • Highest 9 September, 2026

    91 °F

Climate (2021–2026)

San Diego, North Island, Naval Air Station (3.7 miles)

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  • Average Low 2021–2026

    57.7 °F

  • Average 2021–2026

    63.5 °F

  • Average High 2021–2026

    69.6 °F
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