Cayucos State Beach Weather Forecast

    • 61
    • 64

    Increasing Clouds

    • 57
    • 63

    Mostly Cloudy

    • 58
    • 61

    Partly Sunny

    • 61
    • 63

    Partly Sunny

    • 62
    • 74

    Partly Sunny

    • 63
    • 76

    Partly Sunny

    • 62
    • 74

    Partly Sunny

Today 22 Aug San Luis Obispo County Beaches

Areas of low Clouds and fog in the morning then sunny. Highs from the 60s at the Beaches to the upper 70s and 80s inland. Northwest Winds 15 to 25 Mph in the afternoon.

Tonight 22 Aug San Luis Obispo County Beaches

Mostly clear except for patchy low Clouds and fog after midnight. Lows in the upper 50s to mid 60s. Northwest Winds around 15 Mph in the evening.

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Cayucos State Beach Temperature Statistics

August Temperature

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

  • Lowest 1 August, 2026

    52.6 °F

  • Average August

    69.1 °F

  • Highest 9 August, 2026

    85.6 °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 °F

  • Average High 2021–2026

    73.2 °F
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