South Dewees Island Weather Forecast

    • 44
    • 69

    Rain Showers

    • 53
    • 65

    Mostly Sunny

    • 59
    • 70

    Mostly Sunny

    • 63
    • 73

    Rain Showers Likely

    • 42
    • 72

    Rain Showers Likely

    • 41
    • 55

    Partly Sunny

Today 12 Mar Charleston

Partly sunny in the Morning, then becoming mostly cloudy. A slight chance of Thunderstorms. A chance of Showers in the Morning, then Showers in the afternoon. Highs in the lower 70s. Temperature falling to around 60 in the afternoon. Southwest Winds 10 to 15 Mph, becoming northwest 15 to 20 Mph in the afternoon. Gusts up to 35 Mph. Chance of rain 90 percent.

Tonight 12 Mar Charleston

Mostly cloudy. Lows in the mid 60s. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

South Dewees Island Temperature Statistics

March Temperature

Mount Pleasant Regional-Faison Field (5 miles)

  • Lowest 2 March, 2026

    46.4 °F
  • Average March

    63.6 °F
  • Highest 9 March, 2026

    82.4 °F

Climate (2021–Present)

Mount Pleasant Regional-Faison Field (5 miles)

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  • Average Low 2021–2026

    58.3 °F
  • Average 2021–2026

    66.4 °F
  • Average High 2021–2026

    75.4 °F
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