Tides Today & Tomorrow in South Dewees Island, SC

TIDE TIMES for Thursday, July 16, 2026
The tide is currently rising in South Dewees Island, SC.
Next low tide : 4:03 pm (-0.5 ft)
Next high tide : in 2h 00m at 10:23 am (5.0 ft)
Sunset today : 8:27 pm
Sunrise tomorrow : 6:22 am
Moon phase : Waxing Crescent (7% illuminated)
Tide Station Location : Station #8665111
Common Questions About Tides

South Dewees Island, SC Tides - Sep 2071

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue1:534.92:425.47:490.78:401.06:537:43First Quarter1Tue
2Wed2:454.73:345.38:430.89:341.16:547:42First Quarter2Wed
3Thu3:374.74:265.39:360.910:271.16:557:41Waxing Gibbous3Thu
4Fri4:314.75:175.410:270.911:161.06:557:39Waxing Gibbous4Fri
5Sat5:234.86:045.511:180.86:567:38Waxing Gibbous5Sat
6Sun6:134.96:495.612:020.912:050.76:577:37Waxing Gibbous6Sun
7Mon6:585.17:305.612:440.712:490.66:577:36Full Moon7Mon
8Tue7:405.28:085.71:240.61:320.66:587:34Full Moon8Tue
9Wed8:205.38:455.62:020.52:130.56:587:33Full Moon9Wed
10Thu8:575.49:205.62:380.42:530.56:597:32Full Moon10Thu
11Fri9:325.59:545.43:140.43:340.67:007:30Waning Gibbous11Fri
12Sat10:085.610:295.33:510.34:160.67:007:29Waning Gibbous12Sat
13Sun10:465.611:085.24:300.35:000.77:017:27Waning Gibbous13Sun
14Mon11:315.711:555.15:130.45:500.87:027:26Waning Gibbous14Mon
15Tue12:245.76:020.46:460.97:027:25Third Quarter15Tue
16Wed12:515.01:255.76:580.47:501.07:037:23Third Quarter16Wed
17Thu1:565.02:325.88:000.48:550.97:047:22Third Quarter17Thu
18Fri3:055.13:405.99:050.49:590.77:047:21Third Quarter18Fri
19Sat4:145.24:486.010:110.211:010.57:057:19Waning Crescent19Sat
20Sun5:225.55:516.211:150.011:580.27:067:18Waning Crescent20Sun
21Mon6:245.86:486.312:15-0.17:067:17Waning Crescent21Mon
22Tue7:206.17:406.412:520.01:12-0.37:077:15New Moon22Tue
23Wed8:136.38:306.31:42-0.22:06-0.37:077:14New Moon23Wed
24Thu9:046.49:186.22:31-0.22:58-0.27:087:13New Moon24Thu
25Fri9:546.310:055.93:17-0.13:480.07:097:11Waxing Crescent25Fri
26Sat10:426.210:525.64:020.04:360.27:097:10Waxing Crescent26Sat
27Sun11:306.011:385.44:460.35:250.57:107:08Waxing Crescent27Sun
28Mon12:195.85:300.66:140.97:117:07Waxing Crescent28Mon
29Tue12:265.11:095.66:160.97:071.17:117:06First Quarter29Tue
30Wed1:164.92:005.47:061.18:011.37:127:04First Quarter30Wed
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8665111)

Common Questions About South Dewees Island, SC Tides

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

Slack tide in South Dewees Island, SC is approximately 1:13 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 spring phase. Tonight's moon is 7% 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 Waxing Crescent (7% 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