South Dewees Island, SC Weather Forecast and Current Conditions

Day Sky High / Low Precip Wind Humidity
Tue
Jun 23 		Mostly Sunny
Close Hourly 		92º / 72º 15% WSW 16 mph 71%
5am Mostly Clear 80º 3% SW 9 mph 84%
6am Clear 80º 2% SW 9 mph 85%
7am Sunny 80º 2% SW 10 mph 87%
8am Sunny 81º 2% SW 12 mph 86%
9am Sunny 83º 2% SW 14 mph 81%
10am Mostly Sunny 84º 1% SW 15 mph 77%
11am Mostly Sunny 86º 1% SW 17 mph 73%
12pm Partly Cloudy 89º 1% SW 16 mph 67%
1pm Partly Cloudy 90º 15% WSW 16 mph 62%
2pm Partly Cloudy 90º 15% WSW 16 mph 60%
3pm Partly Cloudy 91º 15% WSW 16 mph 56%
4pm Partly Cloudy 91º 15% WSW 14 mph 54%
5pm Partly Cloudy 92º 15% WSW 12 mph 52%
6pm Partly Cloudy 91º 15% WSW 11 mph 54%
7pm Mostly Sunny 89º 2% W 10 mph 57%
8pm Sunny 86º 1% W 8 mph 62%
9pm Mostly Clear 84º 1% WNW 6 mph 66%
10pm Clear 83º 1% WNW 4 mph 69%
11pm Mostly Clear 81º 0% WNW 3 mph 70%
Wed
Jun 24 		Partly Cloudy
View Hourly 		84º / 71º 7% ENE 11 mph 72%
12am Mostly Clear 80º 1% NW 4 mph 73%
1am Mostly Clear 77º 1% NNW 3 mph 79%
2am Clear 76º 2% NNW 3 mph 80%
3am Clear 75º 2% N 3 mph 82%
4am Clear 74º 3% NNE 3 mph 86%
5am Clear 73º 4% NNE 4 mph 87%
6am Mostly Clear 73º 6% NNE 5 mph 90%
7am Partly Cloudy 73º 4% NNE 5 mph 90%
8am Mostly Sunny 76º 5% NE 7 mph 86%
9am Mostly Sunny 77º 4% NE 9 mph 79%
10am Partly Cloudy 80º 6% NE 9 mph 72%
11am Partly Cloudy 81º 8% ENE 9 mph 67%
12pm Partly Cloudy 82º 5% ENE 9 mph 67%
1pm Partly Cloudy 82º 3% E 10 mph 67%
2pm Partly Cloudy 83º 3% E 11 mph 66%
3pm Partly Cloudy 83º 3% E 10 mph 65%
4pm Partly Cloudy 83º 5% E 10 mph 65%
5pm Mostly Sunny 82º 2% E 9 mph 66%
6pm Mostly Sunny 82º 2% E 9 mph 68%
7pm Mostly Sunny 81º 3% E 7 mph 69%
8pm Mostly Sunny 79º 2% E 5 mph 76%
9pm Clear 78º 3% E 4 mph 81%
10pm Clear 77º 4% E 3 mph 84%
11pm Clear 76º 4% E 2 mph 88%
Thu
Jun 25 		Partly Cloudy
View Hourly 		87º / 76º 9% E 9 mph 73%
12am Clear 75º 5% E 1 mph 91%
1am Clear 74º 5% E 1 mph 94%
2am Clear 74º 6% ENE 0 mph 94%
3am Clear 73º 6% ENE 0 mph 96%
4am Clear 73º 6% ENE 0 mph 96%
Fri
Jun 26 		Partly Cloudy 87º / 77º 24% S 11 mph 78%
Sat
Jun 27 		Mostly Sunny 90º / 78º 22% SW 13 mph 73%
Sun
Jun 28 		PM Thunderstorms 94º / 78º 45% WSW 10 mph 69%
Mon
Jun 29 		Isolated Thunderstorms 91º / 78º 32% ENE 9 mph 70%
Tue
Jun 30 		Partly Cloudy 91º / 77º 21% E 10 mph 68%

Weather Radar for South Dewees Island, SC See Radar

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* Playback displays weather for the past 6 hours.

NOAA Weather Marine Forecast for South Dewees Island, SC

Tuesday
High : 89ºF
SW wind 14 to 17 kt increasing to 17 to 20 kt in the afternoon. Winds could gust as high as 26 kt. Sunny. Seas 2 ft building to 4 ft.
Tuesday Night
Low : 76ºF
WSW wind 9 to 12 kt becoming WNW 6 to 9 kt after midnight. Partly cloudy. Seas 2 to 3 ft.
Wednesday
High : 81ºF
N wind 10 to 12 kt becoming E in the afternoon. Sunny. Seas around 2 ft.
Wednesday Night
Low : 78ºF
E wind 5 to 7 kt becoming variable and less than 5 kt after midnight. Mostly clear. Seas around 2 ft.
Thursday
High : 82ºF
Variable winds less than 5 kt becoming ESE 5 to 9 kt in the afternoon. Sunny. Seas around 2 ft.
Thursday Night
Low : 79ºF
SE wind 5 to 7 kt becoming variable and less than 5 kt after midnight. Mostly clear. Seas around 2 ft.
Friday
High : 84ºF
Variable winds less than 5 kt becoming S 6 to 11 kt in the afternoon. Sunny. Seas around 2 ft.
Friday Night
Low : 81ºF
SW wind around 11 kt. Mostly clear. Seas 2 to 3 ft.
Saturday
High : 87ºF
SSW wind 8 to 11 kt increasing to 11 to 14 kt in the afternoon. Winds could gust as high as 22 kt. Sunny. Seas 2 to 3 ft.

NOAA Buoy Data Near South Dewees Island, SC See Map

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    Wind Speed Forecast for South Dewees Island, SC

    TuesdayWednesdayThursday
    Wind Speed (MPH) 9141612634910941
    9am1pm5pm9pm1am5am9am1pm5pm9pm1am5am
    MPH 9141612634910941
    DIR SWSWWSWWSWWNWNNWNNENEEEEE

    Current Weather Conditions In South Dewees Island, SC

    As Of: 25 minutes ago

    • 80ºF
    • 87ºF
    • 9mph
    • 0º (SW)
    • 9mph
    • Mostly Clear
    • 10mi
    • 29.99"
    • 84%
    • 0ºF

    The weather right now in South Dewees Island, SC is Mostly Clear. The current temperature is 80°F, and the expected high and low for today, Tuesday, June 23, 2026, are 92° high temperature and 72°F low temperature. The wind is currently blowing at 9 miles per hour, and coming from the Southwest. The wind is gusting to 9 mph. With the wind and the atmosphere the temperature feels like 87° Fahrenheit. Expected precipitation is 3 percent, with current humidity at 84 percent, and air pressure at 29.99 in. Visibility is 10 nautical miles. There are 1 current weather alert(s).

    Weather Alerts
    Small Craft Advisory - 1:59am Tue Jun 23 2026

    ...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 8 PM EDT THIS EVENING...

    WHAT: Southwest winds 15 to 25 kt with gusts up to 30 kt and
    seas 4 to 6 ft.

    WHERE: South Santee River to Edisto Beach out 20 NM.

    WHEN: Until 8 PM EDT this evening.

    IMPACTS: Conditions will be hazardous to small craft.

    PRECAUTIONARY / PREPAREDNESS ACTIONS:

    Inexperienced mariners, especially those operating smaller
    vessels, should avoid navigating in hazardous conditions.

    &&