San Clemente Island - Pyramid Head Weather Forecast

    • 69
    • 76

    Mostly Cloudy

    • 67
    • 74

    Mostly Cloudy

    • 67
    • 72

    Mostly Sunny

    • 70
    • 77

    Mostly Sunny

    • 70
    • 78

    Partly Sunny

    • 69
    • 76

    Partly Sunny

Today 26 Sep Catalina and Santa Barbara Islands

Cloudy in the morning then partly cloudy. Highs from the mid 70s to around 80 near the coast to the mid to upper 80s interior.

Tonight 26 Sep Catalina and Santa Barbara Islands

Low Clouds and fog. Lows in the upper 50s and 60s.

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San Clemente Island - Pyramid Head Temperature Statistics

September Temperature

San Clemente Island NALF (19.3 miles)

  • Lowest 23 September, 2026

    66 °F

  • Average September

    73.8 °F

  • Highest 9 September, 2026

    87.1 °F

Climate (2021–2026)

San Clemente Island NALF (19.3 miles)

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  • Average Low 2021–2026

    57.9 °F

  • Average 2021–2026

    62.4 °F

  • Average High 2021–2026

    66.8 °F
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