San Clemente Island - Northwest Harbor Weather Forecast

    • 57
    • 65

    Mostly Cloudy

    • 57
    • 65

    Partly Sunny

    • 57
    • 64

    Sunny

    • 58
    • 65

    Mostly Sunny

    • 59
    • 68

    Mostly Sunny

    • 57
    • 68

    Partly Sunny

Today 3 Mar Catalina and Santa Barbara Islands

Low Clouds and fog in the morning then sunny. Highs in the 60s to around 70.

Tonight 3 Mar Catalina and Santa Barbara Islands

Low Clouds and fog. Lows in the lower to mid 50s.

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San Clemente Island - Northwest Harbor Temperature Statistics

March Temperature

San Clemente Island NALF (0.6 miles)

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  • Average March

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Climate (2021–Present)

San Clemente Island NALF (0.6 miles)

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  • Average Low 2021–2026

    57.2 °F

  • Average 2021–2026

    61.6 °F

  • Average High 2021–2026

    66.2 °F
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