San Clemente Island - Mosquito Cove Weather Forecast

    • 64
    • 81

    Partly Sunny

    • 64
    • 81

    Partly Sunny

    • 64
    • 81

    Patchy Fog

    • 65
    • 82

    Partly Sunny

    • 65
    • 83

    Partly Sunny

    • 64
    • 82

    Partly Sunny

Today 7 Aug Catalina and Santa Barbara Islands

Areas of low Clouds and fog in the morning then partly cloudy. Highs from the lower to mid 70s near the coast to the lower to mid 80s interior.

Tonight 7 Aug Catalina and Santa Barbara Islands

Partly cloudy except for Areas of low Clouds and fog. Fog locally dense with visibility one quarter mile or less. Lows in the lower to mid 60s.

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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

    72.7 °F

  • Highest 5 August, 2026

    77 °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

    62.2 °F

  • Average High 2021–2026

    66.6 °F
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