Dunes Beach Weather Forecast

    • 56
    • 69

    Increasing Clouds

    • 56
    • 67

    Mostly Cloudy

    • 57
    • 65

    Mostly Cloudy

    • 56
    • 64

    Mostly Cloudy

    • 56
    • 64

    Mostly Cloudy

    • 56
    • 64

    Mostly Cloudy

Today 20 Aug San Francisco Peninsula Coast

Partly cloudy. A slight chance of drizzle in the morning. Highs around 70. West Winds 5 to 10 Mph.

Tonight 20 Aug San Francisco Peninsula Coast

Partly cloudy in the evening then becoming mostly cloudy. Lows in the mid 50s. Northwest Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

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Dunes Beach Temperature Statistics

August Temperature

Half Moon Bay Airport (3.1 miles)

  • Lowest 6 August, 2025

    48.2 °F

  • Average August

    58.8 °F

  • Highest 6 August, 2025

    69.8 °F

Climate (2020–Present)

Half Moon Bay Airport (3.1 miles)

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  • Average Low 2020–2025

    47.9 °F

  • Average 2020–2025

    54.5 °F

  • Average High 2020–2025

    60.3 °F
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