South Dewees Island Weather Forecast

    • 47
    • 59

    Cloudy

    • 49
    • 64

    Gradual Clearing

    • 42
    • 63

    Chance Rain

    • 38
    • 49

    Rain Likely

    • 36
    • 52

    Rain Showers

    • 24
    • 45

    Partly Sunny

    • 29
    • 41

    Mostly Sunny

Today 21 Jan Charleston

Partly sunny. Highs around 60. East Winds around 5 Mph.

Tonight 21 Jan Charleston

Cloudy. Not as cool with Lows in the mid 40s. East Winds around 5 Mph this Evening, becoming light and variable.

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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 16 January, 2026

    24.8 °F

  • Average January

    51 °F

  • Highest 9 January, 2026

    77 °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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