San Clemente Island - Mosquito Cove Weather Forecast

    • 66
    • 86

    Mostly Sunny

    • 67
    • 86

    Mostly Sunny

    • 69
    • 87

    Mostly Sunny

    • 68
    • 87

    Partly Sunny

    • 68
    • 87

    Mostly Sunny

    • 67
    • 86

    Mostly Sunny

Today 24 Aug Catalina and Santa Barbara Islands

Sunny. Highs from the mid 70s to around 80 near the coast to the mid 80s to around 90 interior.

Tonight 24 Aug Catalina and Santa Barbara Islands

Mostly clear except for patchy low Clouds and fog after midnight. Lows in the mid 60s to mid 70s.

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San Clemente Island - Mosquito Cove Temperature Statistics

August Temperature

San Clemente Island NALF (14.9 miles)

  • Lowest 3 August, 2026

    66 °F

  • Average August

    74.4 °F

  • Highest 14 August, 2026

    81 °F

Climate (2021–2026)

San Clemente Island NALF (14.9 miles)

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  • Average Low 2021–2026

    57.8 °F

  • Average 2021–2026

    62.3 °F

  • Average High 2021–2026

    66.7 °F
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