San Clemente Island - Mosquito Cove Weather Forecast

    • 56
    • 71

    Partly Sunny

    • 57
    • 66

    Increasing Clouds

    • 59
    • 71

    Mostly Sunny

    • 59
    • 72

    Partly Sunny

    • 59
    • 72

    Patchy Fog

    • 59
    • 73

    Partly Sunny

    • 60
    • 73

    Mostly Sunny

Today 21 Oct Catalina and Santa Barbara Islands

Sunny. Highs in the mid 60s to mid 70s.

Tonight 21 Oct Catalina and Santa Barbara Islands

Mostly cloudy. Lows in the mid 40s to mid 50s.

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San Clemente Island - Mosquito Cove Temperature Statistics

October Temperature

San Clemente Island NALF (14.9 miles)

  • Lowest 17 October, 2025

    53.1 °F

  • Average October

    66.2 °F

  • Highest 18 October, 2025

    75 °F

Climate (2020–Present)

San Clemente Island NALF (14.9 miles)

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  • Average Low 2020–2025

    56.7 °F

  • Average 2020–2025

    61.2 °F

  • Average High 2020–2025

    66 °F
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