Seabrook Island Weather Forecast

    • 74
    • 88

    Chance Thunderstorms

    • 75
    • 85

    Chance Thunderstorms

    • 75
    • 86

    Chance Thunderstorms

    • 73
    • 84

    Rain Showers Likely

    • 71
    • 82

    Chance Thunderstorms

    • 69
    • 81

    Slight Chance Thunderstorms

Today 19 Sep Charleston

Mostly sunny. A chance of Showers and Thunderstorms this afternoon. Highs in the upper 80s. Northwest Winds around 5 Mph, becoming east this afternoon. Chance of rain 50 percent.

Tonight 19 Sep Charleston

Partly cloudy. A chance of Showers and Thunderstorms, mainly in the evening. Lows in the lower 70s. East Winds around 5 Mph in the Evening, becoming light and variable. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Seabrook Island Temperature Statistics

September Temperature

Charleston Executive Airport (12.4 miles)

  • Lowest 17 September, 2026

    68 °F

  • Average September

    81.5 °F

  • Highest 13 September, 2026

    93.2 °F

Climate (2021–2026)

Charleston Executive Airport (12.4 miles)

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  • Average Low 2021–2026

    59 °F

  • Average 2021–2026

    67.4 °F

  • Average High 2021–2026

    76.3 °F
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