Winyah Bay - Marsh Islands Weather Forecast

    • 70
    • 80

    Increasing Clouds

    • 69
    • 82

    Mostly Sunny

    • 70
    • 82

    Mostly Sunny

    • 70
    • 81

    Partly Sunny

    • 70
    • 79

    Chance Rain Showers

    • 70
    • 79

    Slight Chance Thunderstorms

Today 17 Sep Coastal Georgetown

Sunny. Highs in the lower 80s. Northwest Winds around 5 Mph, becoming southwest in the afternoon.

Tonight 17 Sep Coastal Georgetown

Mostly clear. Lows in the lower 60s. North Winds around 5 Mph.

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Winyah Bay - Marsh Islands Temperature Statistics

September Temperature

Georgetown County Airport (5.6 miles)

  • Lowest 1 September, 2025

    59 °F

  • Average September

    70.8 °F

  • Highest 5 September, 2025

    87.8 °F

Climate (2020–Present)

Georgetown County Airport (5.6 miles)

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  • Average Low 2020–2025

    54.7 °F

  • Average 2020–2025

    64 °F

  • Average High 2020–2025

    74.2 °F
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