Tides Today & Tomorrow in South Dewees Island, SC

TIDE TIMES for Sunday, June 21, 2026
The tide is currently falling in South Dewees Island, SC.
Next low tide : in 19m at 8:15 pm (0.4 ft)
Next high tide (tomorrow) : 2:34 am (4.7 ft)
Sunset today : 8:30 pm
Sunrise tomorrow : 6:11 am
Moon phase : First Quarter (48% illuminated)
Tide Station Location : Station #8665111
Common Questions About Tides

South Dewees Island, SC Tides - May 2011

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun7:294.67:475.41:140.41:110.26:318:00New Moon1Sun
2Mon8:084.68:245.51:550.31:470.16:308:01New Moon2Mon
3Tue8:474.58:585.52:340.32:240.16:298:01New Moon3Tue
4Wed9:234.49:315.53:120.33:010.16:288:02New Moon4Wed
5Thu9:594.410:055.53:490.33:390.16:278:03Waxing Crescent5Thu
6Fri10:354.310:435.44:280.34:200.26:268:04Waxing Crescent6Fri
7Sat11:154.311:265.35:080.45:050.26:268:04Waxing Crescent7Sat
8Sun12:034.35:540.45:560.36:258:05Waxing Crescent8Sun
9Mon12:175.31:014.46:450.46:560.46:248:06First Quarter9Mon
10Tue1:145.22:054.67:410.38:010.46:238:07First Quarter10Tue
11Wed2:165.13:104.98:400.29:090.36:228:07First Quarter11Wed
12Thu3:205.14:155.29:380.010:160.16:218:08Waxing Gibbous12Thu
13Fri4:245.15:185.610:36-0.311:20-0.16:218:09Waxing Gibbous13Fri
14Sat5:285.16:185.911:32-0.56:208:09Waxing Gibbous14Sat
15Sun6:285.17:136.212:20-0.312:27-0.66:198:10Waxing Gibbous15Sun
16Mon7:245.18:066.31:17-0.51:19-0.76:198:11Full Moon16Mon
17Tue8:185.08:586.32:12-0.62:11-0.76:188:12Full Moon17Tue
18Wed9:125.09:506.23:04-0.63:02-0.66:178:12Full Moon18Wed
19Thu10:054.810:425.93:55-0.43:52-0.36:178:13Waning Gibbous19Thu
20Fri10:584.711:325.64:44-0.34:42-0.16:168:14Waning Gibbous20Fri
21Sat11:514.65:330.05:330.36:168:14Waning Gibbous21Sat
22Sun12:225.312:454.56:230.26:260.66:158:15Waning Gibbous22Sun
23Mon1:125.01:384.47:130.47:240.86:158:16Third Quarter23Mon
24Tue2:014.82:314.58:030.58:230.96:148:16Third Quarter24Tue
25Wed2:504.63:224.68:510.59:201.06:148:17Third Quarter25Wed
26Thu3:384.44:134.79:370.510:150.96:138:18Third Quarter26Thu
27Fri4:284.45:024.910:220.411:070.86:138:18Waning Crescent27Fri
28Sat5:194.35:505.111:060.311:560.76:128:19Waning Crescent28Sat
29Sun6:074.36:345.211:490.26:128:20Waning Crescent29Sun
30Mon6:524.37:155.412:420.512:310.26:128:20Waning Crescent30Mon
31Tue7:354.37:545.51:250.41:120.16:118:21New Moon31Tue
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8665111)

Common Questions About South Dewees Island, SC Tides

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What time does the tide turn (slack tide) in South Dewees Island, SC today?

Slack tide in South Dewees Island, SC is approximately 11:24 pm — midway between the next high and low tide, when tidal current is weakest. This is the preferred window for boat crossings, underwater visibility, and fishing in areas with strong currents.

Is this week a spring tide or neap tide in South Dewees Island, SC?

South Dewees Island, SC is currently in a neap phase. Tonight's moon is 48% illuminated. Spring tides (largest swings) occur near new and full moons; neap tides (smallest swings) occur near first and third quarter moons. Tidal ranges this week are near their weekly minimum.

What datum are South Dewees Island, SC tide heights measured from?

Tide heights on this page are measured from Mean Lower Low Water (MLLW), the U.S. NOAA standard. A height of 0 ft represents the 19-year average of each day's lower low tide. Negative values indicate a "minus tide" — water levels below that long-term reference.

What factors can affect the tide predictions for South Dewees Island, SC?

Tide predictions for South Dewees Island, SC come from NOAA's harmonic analysis and are typically accurate within about ±10 minutes on timing and ±0.5 ft on height. Actual water levels can deviate further due to sustained winds, atmospheric pressure changes, river flow, and storm surge. During major weather events, be sure to check US Harbors weather pages for factors that could impact tidal predictions.

Which NOAA station provides tide data for South Dewees Island, SC?

Tide data for South Dewees Island, SC is sourced from NOAA Station #8665111. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8665111.

What is the moon phase in South Dewees Island, SC tonight?

Tonight the moon over South Dewees Island, SC is First Quarter (48% illuminated). This places South Dewees Island, SC in a neap tide cycle, so tidal ranges are near their weekly minimum this week.

US Harbors Tidal Data

The data in our tide charts, tide tables, and tide graphs is provided by NOAA and others. These predictions are derived mathematically from numerous inputs, including data from historical tide stations and nearby locations where sensors are actively recording. As shown in the tide graph at the top of this page, “Predicted” tides (blue) are what forecasting models expect to happen. “Observed” tides (red) are those recorded by local sensors in real time, overlaid on the predictions for direct comparison. We display Observed water levels for a select group of harbors including Portland, Maine, where a physical sensor monitors water levels in real time.

LEARN MORE ABOUT OUR TIDE DATA