Cayucos State Beach Weather Forecast

    • 57
    • 74

    Patchy Fog

    • 56
    • 69

    Patchy Fog

    • 57
    • 70

    Patchy Fog

    • 56
    • 67

    Partly Sunny

    • 55
    • 65

    Partly Sunny

    • 55
    • 63

    Partly Sunny

Today 11 Sep San Luis Obispo County Beaches

Sunny except for patchy low Clouds and fog in the morning. Highs from the lower to mid 70s at the Beaches to the 80s to lower 90s inland. West Winds around 15 Mph in the afternoon.

Tonight 11 Sep San Luis Obispo County Beaches

Low Clouds and fog. Lows in the mid to upper 50s. Northwest Winds around 15 Mph in the evening.

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Cayucos State Beach Temperature Statistics

September Temperature

San Luis Obispo, San Luis Obispo County-Mc Chesney Field (20.5 miles)

  • Lowest 7 September, 2026

    49.6 °F

  • Average September

    69.7 °F

  • Highest 9 September, 2026

    104 °F

Climate (2021–2026)

San Luis Obispo, San Luis Obispo County-Mc Chesney Field (20.5 miles)

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  • Average Low 2021–2026

    50.2 °F

  • Average 2021–2026

    61.1 °F

  • Average High 2021–2026

    73.3 °F
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