Santa Catalina Island - Little Harbor Weather Forecast

    • 61
    • 74

    Decreasing Clouds

    • 61
    • 74

    Mostly Cloudy

    • 62
    • 75

    Mostly Sunny

    • 63
    • 74

    Partly Sunny

    • 62
    • 73

    Partly Sunny

    • 62
    • 72

    Partly Sunny

Today 16 Sep Catalina and Santa Barbara Islands

Low Clouds and fog with drizzle in the morning then partly cloudy. Highs in the lower to mid 70s.

Tonight 16 Sep Catalina and Santa Barbara Islands

Low Clouds and fog near the coast early Spreading inland. Lows in the upper 50s to mid 60s.

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Santa Catalina Island - Little Harbor Temperature Statistics

September Temperature

San Clemente Island NALF (25.5 miles)

  • Lowest 1 September, 2026

    66.9 °F

  • Average September

    76.1 °F

  • Highest 9 September, 2026

    87.1 °F

Climate (2021–2026)

San Clemente Island NALF (25.5 miles)

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  • Average Low 2021–2026

    57.9 °F

  • Average 2021–2026

    62.4 °F

  • Average High 2021–2026

    66.7 °F
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