South Dewees Island Weather Forecast
- 64
- 81
Mostly Sunny
- 64
- 82
Mostly Sunny
- 70
- 81
Partly Sunny
- 70
- 83
Partly Sunny
- 70
- 84
Mostly Sunny
- 71
- 82
Partly Sunny
Today 15 Sep Charleston
Sunny. Highs in the lower 80s. Northeast Winds 5 to 10 Mph.
Tonight 15 Sep Charleston
Mostly clear. Lows in the lower 60s. Northeast Winds around 5 Mph.
South Dewees Island Temperature Statistics
September Temperature
Mount Pleasant Regional-Faison Field (5 miles)
Lowest 1 September, 2025
62.6 °FAverage September
73.3 °FHighest 7 September, 2025
89.6 °F
Climate (2020–Present)
Mount Pleasant Regional-Faison Field (5 miles)
Average Low 2020–2025
58.5 °FAverage 2020–2025
66.5 °FAverage High 2020–2025
75.4 °F