Tides Today & Tomorrow in South Dewees Island, SC

TIDE TIMES for Friday, July 31, 2026
The tide is currently falling in South Dewees Island, SC.
Next low tide : in 50m at 3:31 am (0.3 ft)
Next high tide : 9:40 am (4.6 ft)
Sunset today : 8:18 pm
Sunrise tomorrow : 6:32 am
Moon phase : Waning Gibbous (96% illuminated)
Tide Station Location : Station #8665111
Common Questions About Tides

South Dewees Island, SC Tides - Nov 1962

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu9:495.610:024.83:170.64:080.96:365:28Waxing Crescent1Thu
2Fri10:295.510:474.73:580.74:540.96:375:27Waxing Crescent2Fri
3Sat11:185.511:414.74:460.75:461.06:385:26First Quarter3Sat
4Sun12:185.55:430.86:450.96:395:25First Quarter4Sun
5Mon12:444.81:245.56:480.87:450.76:405:25First Quarter5Mon
6Tue1:515.02:305.67:560.78:440.56:405:24First Quarter6Tue
7Wed2:595.23:355.79:040.59:420.26:415:23Waxing Gibbous7Wed
8Thu4:055.64:375.810:090.210:38-0.16:425:22Waxing Gibbous8Thu
9Fri5:066.05:355.911:100.011:31-0.46:435:21Waxing Gibbous9Fri
10Sat6:026.36:285.912:08-0.26:445:21Full Moon10Sat
11Sun6:556.67:215.912:23-0.61:03-0.46:455:20Full Moon11Sun
12Mon7:486.78:135.71:13-0.61:57-0.46:465:19Full Moon12Mon
13Tue8:406.69:065.52:03-0.62:49-0.26:475:19Waning Gibbous13Tue
14Wed9:326.49:585.32:52-0.43:390.06:485:18Waning Gibbous14Wed
15Thu10:236.110:525.03:41-0.14:310.36:495:18Waning Gibbous15Thu
16Fri11:155.811:474.84:310.25:240.56:495:17Waning Gibbous16Fri
17Sat12:095.55:250.56:190.76:505:16Third Quarter17Sat
18Sun12:434.71:025.26:220.87:140.96:515:16Third Quarter18Sun
19Mon1:384.61:535.07:210.98:070.96:525:15Third Quarter19Mon
20Tue2:324.72:444.98:191.08:560.96:535:15Third Quarter20Tue
21Wed3:254.83:354.99:140.99:420.86:545:15Waning Crescent21Wed
22Thu4:164.94:234.910:060.810:250.76:555:14Waning Crescent22Thu
23Fri5:045.15:104.910:550.711:060.56:565:14Waning Crescent23Fri
24Sat5:475.35:534.911:400.611:450.46:575:14Waning Crescent24Sat
25Sun6:285.56:334.912:240.46:585:13New Moon25Sun
26Mon7:075.57:124.912:220.31:050.36:585:13New Moon26Mon
27Tue7:435.67:494.812:590.21:460.36:595:13New Moon27Tue
28Wed8:195.68:264.71:370.22:260.37:005:13New Moon28Wed
29Thu8:545.59:044.62:170.13:070.37:015:12Waxing Crescent29Thu
30Fri9:325.59:454.62:580.13:490.37:025:12Waxing Crescent30Fri
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 6:35 am — 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 spring phase. Tonight's moon is 96% 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 maximum.

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 Waning Gibbous (96% illuminated). This places South Dewees Island, SC in a spring tide cycle, so tidal ranges are near their weekly maximum 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