San Diego Bay - National City Weather Forecast

    • 47
    • 64

    Mostly Sunny

    • 51
    • 67

    Mostly Sunny

    • 53
    • 71

    Mostly Sunny

    • 52
    • 72

    Mostly Sunny

    • 54
    • 73

    Mostly Sunny

    • 56
    • 75

    Mostly Sunny

Today 9 Jan San Diego County Coastal Areas

Mostly sunny. Highs around 65. Areas of Winds northeast 10 to 20 Mph. Gusts to 30 Mph. Becoming 35 Mph this afternoon.

Tonight 9 Jan San Diego County Coastal Areas

Mostly clear. Lows 43 to 47. Areas of Winds northeast 10 to 15 Mph with Gusts to 30 Mph.

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San Diego Bay - National City Temperature Statistics

January Temperature

San Diego, North Island, Naval Air Station (5 miles)

  • Lowest 6 January, 2026

    54 °F

  • Average January

    60.7 °F

  • Highest 1 January, 2026

    66 °F

Climate (2021–Present)

San Diego, North Island, Naval Air Station (5 miles)

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  • Average Low 2021–2026

    57.4 °F

  • Average 2021–2026

    63 °F

  • Average High 2021–2026

    69.1 °F
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