Tides Today & Tomorrow in Fort Sumter, SC

TIDE TIMES for Monday, June 22, 2026
The tide is currently falling in Fort Sumter, SC.
Next low tide : in 3h 51m at 9:30 pm (0.6 ft)
Next high tide (tomorrow) : 3:26 am (4.6 ft)
Sunset today : 8:30 pm
Sunrise tomorrow : 6:12 am
Moon phase : First Quarter (58% illuminated)
Tide Station Location : Station #8665728
Common Questions About Tides

Fort Sumter, SC Tides - Oct 2041

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue12:245.76:020.97:081.47:147:03First Quarter1Tue
2Wed12:414.81:265.76:571.08:101.47:147:02First Quarter2Wed
3Thu1:454.82:365.88:021.09:141.37:157:01First Quarter3Thu
4Fri2:544.93:475.99:110.910:171.17:166:59First Quarter4Fri
5Sat4:065.14:566.110:210.711:170.77:166:58Waxing Gibbous5Sat
6Sun5:155.55:576.311:270.47:176:57Waxing Gibbous6Sun
7Mon6:185.96:536.512:120.412:290.17:186:56Waxing Gibbous7Mon
8Tue7:146.37:446.51:040.01:27-0.17:186:54Full Moon8Tue
9Wed8:076.68:346.41:53-0.22:23-0.27:196:53Full Moon9Wed
10Thu8:586.89:236.22:41-0.33:16-0.17:206:52Full Moon10Thu
11Fri9:496.810:135.93:28-0.34:080.17:216:51Waning Gibbous11Fri
12Sat10:406.711:035.64:14-0.15:000.37:216:49Waning Gibbous12Sat
13Sun11:316.511:555.35:010.25:520.77:226:48Waning Gibbous13Sun
14Mon12:236.25:490.56:461.07:236:47Waning Gibbous14Mon
15Tue12:495.01:185.96:410.87:441.37:246:46Third Quarter15Tue
16Wed1:454.82:145.67:371.18:431.57:246:45Third Quarter16Wed
17Thu2:424.83:095.58:371.39:391.57:256:43Third Quarter17Thu
18Fri3:384.84:035.49:361.310:311.47:266:42Third Quarter18Fri
19Sat4:334.94:545.410:321.311:181.37:276:41Waning Crescent19Sat
20Sun5:255.15:425.511:241.27:276:40Waning Crescent20Sun
21Mon6:135.36:265.512:001.212:131.07:286:39Waning Crescent21Mon
22Tue6:565.57:065.612:391.012:580.97:296:38Waning Crescent22Tue
23Wed7:365.77:435.51:150.91:410.87:306:37New Moon23Wed
24Thu8:135.88:195.41:490.82:220.77:316:36New Moon24Thu
25Fri8:485.98:545.32:230.73:030.77:316:35New Moon25Fri
26Sat9:226.09:285.22:580.63:440.87:326:34New Moon26Sat
27Sun9:556.010:055.03:340.64:250.87:336:33Waxing Crescent27Sun
28Mon10:335.910:454.94:130.65:080.97:346:32Waxing Crescent28Mon
29Tue11:175.911:334.84:560.75:571.17:356:31Waxing Crescent29Tue
30Wed12:115.85:450.76:511.17:356:30Waxing Crescent30Wed
31Thu12:304.81:155.76:430.87:521.17:366:29First Quarter31Thu
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8665728)

Common Questions About Fort Sumter, SC Tides

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What time does the tide turn (slack tide) in Fort Sumter, SC today?

Slack tide in Fort Sumter, SC is approximately 12:28 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 Fort Sumter, SC?

Fort Sumter, SC is currently in a neap phase. Tonight's moon is 58% 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 Fort Sumter, 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 Fort Sumter, SC?

Tide predictions for Fort Sumter, 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 Fort Sumter, SC?

Tide data for Fort Sumter, SC is sourced from NOAA Station #8665728. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8665728.

What is the moon phase in Fort Sumter, SC tonight?

Tonight the moon over Fort Sumter, SC is First Quarter (58% illuminated). This places Fort Sumter, 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