Kiawah and Seabrook Islands Weather Forecast

    • 78
    • 90

    Chance Thunderstorms

    • 74
    • 91

    Thunderstorms Likely

    • 74
    • 84

    Chance Thunderstorms

    • 75
    • 84

    Slight Chance Thunderstorms

    • 75
    • 85

    Slight Chance Thunderstorms

    • 76
    • 87

    Mostly Sunny

Today 5 Sep Charleston

Sunny. Highs in the mid 90s, except around 90 near the coast. Heat index Values up to 109. West Winds around 5 Mph, becoming southwest with Gusts up to 20 Mph this afternoon.

Tonight 5 Sep Charleston

Mostly clear in the Evening, then partly cloudy with a slight chance of Showers and Thunderstorms after midnight. Lows in the upper 70s. Heat index Values up to 105 early in the evening. Southwest Winds 5 to 10 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Kiawah and Seabrook Islands Temperature Statistics

September Temperature

Charleston Executive Airport (9.9 miles)

  • Lowest 1 September, 2026

    75.2 °F

  • Average September

    82 °F

  • Highest 2 September, 2026

    91.4 °F

Climate (2021–2026)

Charleston Executive Airport (9.9 miles)

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  • Average Low 2021–2026

    59 °F

  • Average 2021–2026

    67.3 °F

  • Average High 2021–2026

    76.2 °F
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