Winyah Bay - Marsh Islands Weather Forecast

    • 54
    • 71

    Sunny

    • 60
    • 77

    Mostly Sunny

    • 63
    • 79

    Mostly Sunny

    • 67
    • 81

    Mostly Sunny

    • 70
    • 81

    Mostly Sunny

    • 72
    • 82

    Mostly Sunny

    • 73
    • 82

    Partly Sunny

Today 25 Sep Coastal Georgetown

Mostly sunny with a chance of Showers. Highs in the mid 80s. Chance of rain 30 percent.

Tonight 25 Sep Coastal Georgetown

Clear. Lows in the lower 50s. North Winds 5 to 10 Mph.

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  • Temperature Real-Time

Winyah Bay - Marsh Islands Temperature Statistics

September Temperature

Georgetown County Airport (5.6 miles)

  • Lowest 16 September, 2026

    62.6 °F

  • Average September

    77.6 °F

  • Highest 5 September, 2026

    95 °F

Climate (2021–2026)

Georgetown County Airport (5.6 miles)

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  • Average Low 2021–2026

    54.7 °F

  • Average 2021–2026

    64.1 °F

  • Average High 2021–2026

    74.5 °F
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