South Dewees Island, SC Weather Forecast and Current Conditions
| Day | Sky | High / Low | Precip | Wind | Humidity | |
|---|---|---|---|---|---|---|
|
Sun Aug 2 |
Heavy Thunderstorms Close Hourly |
85º / 76º | 100% | SSW 17 mph | 88% | |
| 10am | Thunderstorms | 79º | 97% | SW 8 mph | 96% | |
| 11am | Heavy Thunderstorms | 80º | 84% | SW 9 mph | 94% | |
| 12pm | Heavy Thunderstorms | 81º | 99% | SSW 13 mph | 91% | |
| 1pm | Thunderstorms | 83º | 88% | SSW 16 mph | 87% | |
| 2pm | Thunderstorms | 84º | 79% | SSW 17 mph | 85% | |
| 3pm | Cloudy | 85º | 14% | SSW 18 mph | 83% | |
| 4pm | Cloudy | 84º | 10% | SSW 18 mph | 82% | |
| 5pm | Mostly Cloudy | 84º | 17% | SSW 16 mph | 85% | |
| 6pm | Cloudy | 83º | 24% | SSW 17 mph | 87% | |
| 7pm | Cloudy | 83º | 23% | SSW 15 mph | 88% | |
| 8pm | Scattered Thunderstorms | 82º | 37% | SSW 13 mph | 89% | |
| 9pm | Scattered Thunderstorms | 81º | 37% | SSW 11 mph | 92% | |
| 10pm | Scattered Thunderstorms | 80º | 41% | SSW 10 mph | 93% | |
| 11pm | Cloudy | 81º | 21% | SSW 10 mph | 91% | |
|
Mon Aug 3 |
Scattered Thunderstorms View Hourly |
84º / 76º | 51% | SW 13 mph | 89% | |
| 12am | Mostly Cloudy | 80º | 23% | SSW 11 mph | 93% | |
| 1am | Scattered Thunderstorms | 80º | 38% | SSW 9 mph | 95% | |
| 2am | Scattered Thunderstorms | 79º | 40% | SSW 9 mph | 94% | |
| 3am | Scattered Thunderstorms | 80º | 40% | SSW 8 mph | 93% | |
| 4am | Scattered Thunderstorms | 79º | 38% | SW 8 mph | 94% | |
| 5am | Scattered Thunderstorms | 78º | 47% | SW 7 mph | 95% | |
| 6am | Scattered Thunderstorms | 77º | 36% | SW 6 mph | 97% | |
| 7am | Mostly Cloudy | 77º | 24% | SW 5 mph | 97% | |
| 8am | Mostly Cloudy | 78º | 24% | SW 6 mph | 94% | |
| 9am | Scattered Thunderstorms | 80º | 45% | SW 8 mph | 90% | |
| 10am | Scattered Thunderstorms | 81º | 45% | SW 9 mph | 89% | |
| 11am | Scattered Thunderstorms | 82º | 38% | SW 10 mph | 88% | |
| 12pm | Cloudy | 83º | 24% | SSW 10 mph | 86% | |
| 1pm | Scattered Thunderstorms | 83º | 51% | SSW 11 mph | 85% | |
| 2pm | Scattered Thunderstorms | 83º | 42% | SSW 13 mph | 87% | |
| 3pm | Scattered Thunderstorms | 83º | 40% | SSW 13 mph | 87% | |
| 4pm | Scattered Thunderstorms | 82º | 45% | SSW 12 mph | 89% | |
| 5pm | Mostly Cloudy | 82º | 24% | SSW 11 mph | 90% | |
| 6pm | Scattered Thunderstorms | 82º | 42% | SSW 11 mph | 91% | |
| 7pm | Cloudy | 80º | 24% | SSW 10 mph | 94% | |
| 8pm | Mostly Cloudy | 80º | 19% | SSW 9 mph | 94% | |
| 9pm | Mostly Cloudy | 80º | 22% | SSW 7 mph | 96% | |
| 10pm | Cloudy | 80º | 14% | SSW 7 mph | 93% | |
| 11pm | Mostly Cloudy | 80º | 18% | SSW 7 mph | 92% | |
|
Tue Aug 4 |
AM Showers View Hourly |
86º / 77º | 60% | S 11 mph | 87% | |
| 12am | Showers | 80º | 48% | SSW 7 mph | 92% | |
| 1am | Showers | 80º | 36% | SSW 7 mph | 93% | |
| 2am | Showers | 80º | 39% | SSW 8 mph | 93% | |
| 3am | Showers | 80º | 43% | SSW 6 mph | 92% | |
| 4am | Showers | 79º | 47% | SSW 5 mph | 92% | |
| 5am | Mostly Cloudy | 78º | 22% | SSW 4 mph | 94% | |
| 6am | Showers | 78º | 38% | SW 2 mph | 96% | |
| 7am | Showers | 77º | 56% | SW 1 mph | 99% | |
| 8am | Rain | 78º | 61% | SSW 3 mph | 99% | |
| 9am | Showers | 80º | 48% | SSW 4 mph | 94% | |
|
Wed Aug 5 |
AM Thundershowers | 85º / 78º | 76% | S 10 mph | 86% | |
|
Thu Aug 6 |
Scattered Thunderstorms | 87º / 79º | 68% | SSE 9 mph | 84% | |
|
Fri Aug 7 |
AM Thunderstorms | 88º / 78º | 44% | ESE 11 mph | 81% | |
|
Sat Aug 8 |
Thunderstorms | 86º / 77º | 65% | ESE 10 mph | 83% | |
|
Sun Aug 9 |
Thunderstorms | 87º / 77º | 63% | SSE 9 mph | 82% | |
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Buoy Data
For South Dewees Island, SC -
Wind Forecast
In South Dewees Island, SC -
Radar
In South Dewees Island, SC -
Marine Forecast
In South Dewees Island, SC
Weather Radar for South Dewees Island, SC See Radar
* Playback displays weather for the past 6 hours.
NOAA Weather Marine Forecast for South Dewees Island, SC
SSW wind 12 to 15 kt increasing to 18 to 21 kt in the afternoon. Winds could gust as high as 27 kt. Showers and possibly a thunderstorm, mainly before 2pm, then showers and thunderstorms likely after 2pm. Seas 3 to 4 ft.
SSW wind 18 to 21 kt decreasing to 15 to 18 kt after midnight. Showers and thunderstorms before midnight, then showers and possibly a thunderstorm, mainly after midnight. Seas 4 to 5 ft.
SW wind 13 to 18 kt, with gusts as high as 24 kt. Showers and thunderstorms before 2pm, then showers likely and possibly a thunderstorm between 2pm and 3pm, then a chance of showers and thunderstorms after 3pm. Seas around 4 ft.
SSW wind 10 to 14 kt, with gusts as high as 20 kt. Showers and possibly a thunderstorm. Seas around 3 ft.
S wind 6 to 9 kt increasing to 9 to 12 kt in the afternoon. Showers and possibly a thunderstorm, mainly before 2pm, then a slight chance of showers and thunderstorms after 2pm. Seas 2 to 3 ft.
S wind 9 to 11 kt. A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2am. Seas around 3 ft.
S wind 6 to 11 kt. Showers likely and possibly a thunderstorm before 8am, then a chance of showers and thunderstorms between 8am and 2pm. Seas around 2 ft.
S wind 7 to 9 kt. A chance of showers and thunderstorms, mainly after 2am. Seas around 2 ft.
Variable winds less than 5 kt becoming SSE 5 to 9 kt in the afternoon. A chance of showers and thunderstorms, mainly before 2pm. Seas around 2 ft.
NOAA Buoy Data Near South Dewees Island, SC See Map
Wind Speed Forecast for South Dewees Island, SC
| Sunday | Monday | Tuesday | ||||||||||
| Wind Speed (MPH) | 8 | 17 | 17 | 10 | 9 | 6 | 9 | 13 | 11 | 7 | 8 | 2 |
| 2pm | 6pm | 10pm | 2am | 6am | 10am | 2pm | 6pm | 10pm | 2am | 6am | 10am | |
| MPH | 8 | 17 | 17 | 10 | 9 | 6 | 9 | 13 | 11 | 7 | 8 | 2 |
| DIR | SW | SSW | SSW | SSW | SSW | SW | SW | SSW | SSW | SSW | SSW | SW |
Current Weather Conditions In South Dewees Island, SC
As Of: 23 minutes ago
- 79ºF
- 88ºF
- 8mph
- 0º (SW)
- 8mph
- Thunderstorms
- 6mi
- 29.86"
- 96%
- 0ºF
The weather right now in South Dewees Island, SC is Thunderstorms. The current temperature is 79°F, and the expected high and low for today, Sunday, August 2, 2026, are 85° high temperature and 76°F low temperature. The wind is currently blowing at 8 miles per hour, and coming from the Southwest. The wind is gusting to 8 mph. With the wind and the atmosphere the temperature feels like 88° Fahrenheit. Expected precipitation is 97 percent, with current humidity at 96 percent, and air pressure at 29.86 in. Visibility is 6 nautical miles. There are 3 current weather alert(s).
The National Weather Service in Charleston has issued a
* Special Marine Warning for...
Waters from South Santee River SC to Savannah GA out 20 NM...
Charleston Harbor...
* Until 1130 AM EDT.
* At 932 AM EDT, a severe thunderstorm capable of producing
waterspouts was located near Fripp Island Reef, moving northeast at
20 knots.
HAZARD...Waterspouts and wind gusts to 34 knots.
SOURCE...Radar indicated.
IMPACT...Waterspouts can easily overturn boats and create locally
hazardous seas. Small craft could be damaged in briefly
higher winds and suddenly higher waves.
* Locations impacted include...
Charleston Nearshore Reef, Joe Shuford Reef, Charleston Sixty, Air
Force Reef, Charleston Coastal Anglers, Rattlesnake Shoal, Capers
Reef, Charleston Harbor Entrance, Lowcountry Anglers, Capers Island
Buoy, Bull Breakers, Kiawah Reef, Bulls Bay, N. Edisto Nearshore
Reef and Jimmy Leland Tug.
PRECAUTIONARY / PREPAREDNESS ACTIONS:
Move to safe harbor until hazardous weather passes.
Thunderstorms can produce sudden waterspouts. Waterspouts can easily
overturn boats and create locally hazardous seas. Seek safe harbor
immediately.
&&
WATERSPOUT...POSSIBLE; MAX HAIL SIZE...0.00 IN; MAX WIND GUST...34 KTS
...HIGH RIP CURRENT RISK REMAINS IN EFFECT FROM 8 AM EDT THIS MORNING THROUGH THIS EVENING...
WHAT: Dangerous rip currents expected.
WHERE: Charleston County.
WHEN: From 8 AM EDT this morning through this evening.
IMPACTS: Rip currents can sweep even the best swimmers away
from shore into deeper water.
PRECAUTIONARY / PREPAREDNESS ACTIONS:
Swim near a lifeguard. If caught in a rip current, relax and
float. Don't swim against the current. If able, swim in a
direction following the shoreline. If unable to escape, face the
shore and call or wave for help.
&&
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM NOON TODAY TO 2 AM EDT TUESDAY...
WHAT: Southwest winds 20 to 25 kt with gusts up to 30 kt and
seas 4 to 7 ft expected.
WHERE: South Santee River to Edisto Beach out 20 NM.
WHEN: From noon today to 2 AM EDT Tuesday.
IMPACTS: Conditions will be hazardous to small craft.
PRECAUTIONARY / PREPAREDNESS ACTIONS:
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&