San Clemente Island - Sun Point Weather Forecast

    • 65
    • 73

    Patchy Fog

    • 67
    • 75

    Increasing Clouds

    • 66
    • 75

    Chance Rain Showers

    • 66
    • 75

    Chance Rain Showers

    • 66
    • 74

    Partly Sunny

    • 66
    • 74

    Partly Sunny

    • 66
    • 74

    Partly Sunny

Today 15 Sep Catalina and Santa Barbara Islands

Low Clouds and fog in the morning then sunny. Highs from the lower 70s near the coast to the lower 80s interior.

Tonight 15 Sep Catalina and Santa Barbara Islands

Mostly clear in the evening then low Clouds and fog. Lows in the upper 50s and 60s.

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San Clemente Island - Sun Point Temperature Statistics

September Temperature

San Clemente Island NALF (18 miles)

  • Lowest 5 September, 2025

    62.1 °F

  • Average September

    67.1 °F

  • Highest 7 September, 2025

    75 °F

Climate (2020–Present)

San Clemente Island NALF (18 miles)

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  • Average Low 2020–2025

    56.8 °F

  • Average 2020–2025

    61.3 °F

  • Average High 2020–2025

    66.1 °F
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