South Dewees Island Weather Forecast

    • 59
    • 70

    Increasing Clouds

    • 35
    • 65

    Partly Sunny

    • 37
    • 50

    Partly Sunny

    • 45
    • 56

    Partly Sunny

    • 42
    • 59

    Chance Rain Showers

    • 33
    • 52

    Chance Rain Showers

    • 40
    • 53

    Mostly Sunny

Today 10 Jan Charleston

Mostly sunny. Highs in the mid 70s, except around 70 near the coast. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 10 Jan Charleston

Partly cloudy this Evening, then mostly cloudy with a slight chance of Showers after midnight. Lows in the upper 50s. Southwest Winds 5 to 10 Mph with Gusts up to 25 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

South Dewees Island Temperature Statistics

January Temperature

Mount Pleasant Regional-Faison Field (5 miles)

  • Lowest 1 January, 2026

    39.2 °F

  • Average January

    54.3 °F

  • Highest 7 January, 2026

    71.6 °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

    75.3 °F
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