Santa Catalina Island - Avalon Bay Weather Forecast

    • 57
    • 67

    Sunny

    • 57
    • 65

    Sunny

    • 59
    • 66

    Sunny

    • 62
    • 69

    Sunny

    • 62
    • 69

    Mostly Sunny

    • 62
    • 70

    Mostly Sunny

    • 62
    • 69

    Mostly Sunny

Today 5 Dec Catalina and Santa Barbara Islands

Sunny. Highs in the mid to upper 60s.

Tonight 5 Dec Catalina and Santa Barbara Islands

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

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  • Temperature Real-Time

Santa Catalina Island - Avalon Bay Temperature Statistics

December Temperature

San Clemente Island NALF (26.7 miles)

  • Lowest 2 December, 2025

    50 °F

  • Average December

    60 °F

  • Highest 1 December, 2025

    64 °F

Climate (2020–Present)

San Clemente Island NALF (26.7 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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