Half Moon Bay State Beach Weather Forecast

    • 49
    • 64

    Partly Sunny

    • 48
    • 65

    Areas Fog

    • 49
    • 72

    Partly Sunny

    • 51
    • 68

    Partly Sunny

    • 49
    • 66

    Partly Sunny

Today 9 May San Francisco Peninsula Coast

Partly cloudy. Highs in the mid 60s. Northwest Winds 10 to 20 Mph.

Tonight 9 May San Francisco Peninsula Coast

Mostly cloudy. Patchy fog. Lows near 50. Northwest Winds 5 to 10 Mph.

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Half Moon Bay State Beach Temperature Statistics

May Temperature

Half Moon Bay Airport (4.3 miles)

  • Lowest 4 May, 2026

    51.8 °F

  • Average May

    55.9 °F

  • Highest 6 May, 2026

    62.6 °F

Climate (2021–Present)

Half Moon Bay Airport (4.3 miles)

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  • Average Low 2021–2026

    48.5 °F

  • Average 2021–2026

    54.9 °F

  • Average High 2021–2026

    60.9 °F
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