San Clemente Island - Mosquito Cove Weather Forecast

    • 53
    • 64

    Mostly Sunny

    • 54
    • 67

    Mostly Sunny

    • 57
    • 69

    Mostly Sunny

    • 57
    • 71

    Mostly Sunny

    • 56
    • 70

    Mostly Sunny

    • 54
    • 68

    Partly Sunny

    • 56
    • 67

    Patchy Fog

Today 6 Dec Catalina and Santa Barbara Islands

Sunny. Highs in the 60s.

Tonight 6 Dec Catalina and Santa Barbara Islands

Clear. Lows in the upper 40s to mid 50s.

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San Clemente Island - Mosquito Cove Temperature Statistics

December Temperature

San Clemente Island NALF (14.9 miles)

  • Lowest 2 December, 2025

    50 °F

  • Average December

    60.8 °F

  • Highest 4 December, 2025

    66 °F

Climate (2020–Present)

San Clemente Island NALF (14.9 miles)

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  • Average Low 2020–2025

    56.8 °F

  • Average 2020–2025

    61.3 °F

  • Average High 2020–2025

    66 °F
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