Half Moon Bay State Beach Weather Forecast

    • 56
    • 67

    Patchy Fog

    • 58
    • 68

    Mostly Cloudy

    • 57
    • 71

    Mostly Cloudy

    • 56
    • 68

    Mostly Cloudy

    • 57
    • 66

    Mostly Cloudy

    • 59
    • 67

    Mostly Cloudy

    • 59
    • 67

    Mostly Cloudy

Today 7 Aug San Francisco Peninsula Coast

Mostly cloudy. Highs around 70. West Winds 5 to 10 Mph.

Tonight 7 Aug San Francisco Peninsula Coast

Mostly cloudy. Patchy fog after midnight. Lows in the mid 50s. West Winds up to 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Half Moon Bay State Beach Temperature Statistics

August Temperature

Half Moon Bay Airport (4.3 miles)

  • Lowest 2 August, 2026

    50 °F

  • Average August

    59.1 °F

  • Highest 2 August, 2026

    66.2 °F

Climate (2021–2026)

Half Moon Bay Airport (4.3 miles)

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  • Average Low 2021–2026

    48.6 °F

  • Average 2021–2026

    55.1 °F

  • Average High 2021–2026

    61 °F
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