Winyah Bay - Marsh Islands Weather Forecast

    • 69
    • 80

    Sunny

    • 73
    • 82

    Sunny

    • 73
    • 85

    Mostly Sunny

    • 73
    • 86

    Mostly Sunny

    • 72
    • 85

    Chance Thunderstorms

    • 72
    • 81

    Chance Thunderstorms

Today 3 Sep Coastal Georgetown

Sunny. Highs in the lower 80s. Northeast Winds 5 to 10 Mph.

Tonight 3 Sep Coastal Georgetown

Mostly clear. Lows in the upper 60s. Southeast Winds around 5 Mph, becoming northwest after midnight.

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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

    69.7 °F

  • Highest 1 September, 2025

    80.6 °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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