Half Moon Bay Weather Forecast

    • 56
    • 68

    Mostly Cloudy

    • 56
    • 70

    Mostly Cloudy

    • 57
    • 72

    Mostly Cloudy

    • 58
    • 73

    Mostly Cloudy

    • 57
    • 71

    Mostly Cloudy

    • 57
    • 69

    Mostly Cloudy

Today 5 Aug San Francisco Peninsula Coast

Mostly cloudy in the morning then becoming partly cloudy. A slight chance of drizzle in the morning. Highs in the upper 60s. South Winds 5 to 10 Mph.

Tonight 5 Aug San Francisco Peninsula Coast

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

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Half Moon Bay Temperature Statistics

August Temperature

Half Moon Bay Airport (5 miles)

  • Lowest 2 August, 2026

    50 °F

  • Average August

    58.4 °F

  • Highest 2 August, 2026

    66.2 °F

Climate (2021–2026)

Half Moon Bay Airport (5 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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