Santa Catalina Island - Sullivans Beach Weather Forecast

    • 69
    • 85

    Increasing Clouds

    • 70
    • 85

    Mostly Cloudy

    • 69
    • 85

    Mostly Cloudy

    • 67
    • 85

    Mostly Sunny

    • 64
    • 82

    Mostly Sunny

    • 64
    • 80

    Partly Sunny

Today 26 Aug Catalina and Santa Barbara Islands

Sunny except for patchy low Clouds and fog in the morning. Highs from around 80 near the coast to the lower to mid 90s interior.

Tonight 26 Aug Catalina and Santa Barbara Islands

Partly cloudy in the evening then mostly cloudy. Lows in the upper 60s to mid 70s.

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Santa Catalina Island - Sullivans Beach Temperature Statistics

August Temperature

Torrance, Zamperini Field Airport (25.5 miles)

  • Lowest 17 August, 2026

    63.7 °F

  • Average August

    71 °F

  • Highest 22 August, 2026

    86 °F

Climate (2021–2026)

Torrance, Zamperini Field Airport (25.5 miles)

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  • Average Low 2021–2026

    55.9 °F

  • Average 2021–2026

    65.6 °F

  • Average High 2021–2026

    72.1 °F
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