San Clemente Island - Mosquito Cove Weather Forecast

    • 65
    • 84

    Mostly Sunny

    • 64
    • 79

    Increasing Clouds

    • 61
    • 77

    Chance Rain Showers

    • 56
    • 72

    Chance Rain Showers

    • 57
    • 69

    Chance Rain Showers

    • 58
    • 70

    Mostly Sunny

    • 61
    • 74

    Mostly Sunny

Today 8 Oct Catalina and Santa Barbara Islands

Sunny. Highs in the mid 70s to lower 80s.

Tonight 8 Oct Catalina and Santa Barbara Islands

Mostly clear in the evening then low Clouds and fog. Lows in the upper 50s to mid 60s except the lower to mid 70s in the Hills.

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San Clemente Island - Mosquito Cove Temperature Statistics

October Temperature

San Clemente Island NALF (14.9 miles)

  • Lowest 2 October, 2026

    64.9 °F

  • Average October

    76 °F

  • Highest 3 October, 2026

    95 °F

Climate (2021–2026)

San Clemente Island NALF (14.9 miles)

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  • Average Low 2021–2026

    58 °F

  • Average 2021–2026

    62.5 °F

  • Average High 2021–2026

    66.9 °F
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