South Farallon Islands - Southeast Weather Forecast

    • 51
    • 55

    Chance Drizzle

    • 51
    • 54

    Breezy

    • 51
    • 54

    Breezy

    • 51
    • 55

    Mostly Cloudy

    • 51
    • 55

    Breezy

    • 51
    • 54

    Breezy

Today 25 May San Francisco

Mostly cloudy in the morning then becoming partly cloudy. A slight chance of drizzle in the morning. Highs in the mid 50s to lower 60s. West Winds 5 to 10 Mph increasing to 10 to 20 Mph in the afternoon.

Tonight 25 May San Francisco

Mostly cloudy. Lows in the lower 50s. Southwest Winds 5 to 10 Mph.

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South Farallon Islands - Southeast Temperature Statistics

May Temperature

Half Moon Bay Airport (29.8 miles)

  • Lowest 19 May, 2026

    42.8 °F

  • Average May

    55.1 °F

  • Highest 18 May, 2026

    73.4 °F

Climate (2021–Present)

Half Moon Bay Airport (29.8 miles)

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  • Average Low 2021–2026

    48.5 °F

  • Average 2021–2026

    55 °F

  • Average High 2021–2026

    60.9 °F
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