South Dewees Island Weather Forecast

    • 63
    • 77

    Mostly Sunny

    • 54
    • 79

    Slight Chance Thunderstorms

    • 53
    • 62

    Chance Rain Showers

    • 58
    • 67

    Slight Chance Rain Showers

    • 61
    • 73

    Mostly Sunny

    • 56
    • 77

    Partly Sunny

Today 22 Mar Charleston

Sunny. Highs in the mid 80s, except in the upper 70s near the coast. Southwest Winds 10 to 15 Mph.

Tonight 22 Mar Charleston

Mostly clear. Lows in the lower 60s. Southwest Winds 10 to 15 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 18 March, 2026

    33.8 °F

  • Average March

    62.5 °F

  • Highest 10 March, 2026

    84.2 °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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