San Clemente Island - Mosquito Cove Weather Forecast

    • 54
    • 65

    Mostly Sunny

    • 57
    • 68

    Partly Sunny

    • 56
    • 71

    Mostly Cloudy

    • 56
    • 68

    Rain Showers Likely

    • 56
    • 68

    Rain Showers Likely

    • 55
    • 67

    Chance Rain Showers

Today 28 Dec Catalina and Santa Barbara Islands

Sunny. Highs in the 60s.

Tonight 28 Dec Catalina and Santa Barbara Islands

Mostly clear. Lows in the lower to mid 50s.

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  • Temperature Real-Time

San Clemente Island - Mosquito Cove Temperature Statistics

December Temperature

San Clemente Island NALF (14.9 miles)

  • Lowest 2 December, 2025

    50 °F

  • Average December

    61.9 °F

  • Highest 9 December, 2025

    70 °F

Climate (2020–Present)

San Clemente Island NALF (14.9 miles)

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  • Average Low 2020–2025

    56.9 °F

  • Average 2020–2025

    61.3 °F

  • Average High 2020–2025

    66 °F
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