Tides Today & Tomorrow in Fort Sumter, SC

TIDE TIMES for Tuesday, June 23, 2026
The tide is currently falling in Fort Sumter, SC.
Next low tide : in 1h 53m at 9:42 am (0.1 ft)
Next high tide : 4:19 pm (5.2 ft)
Sunset today : 8:31 pm
Sunrise tomorrow : 6:12 am
Moon phase : First Quarter (67% illuminated)
Tide Station Location : Station #8665728
Common Questions About Tides

Fort Sumter, SC Tides - Oct 2042

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed10:016.810:276.03:43-0.44:220.07:137:04Waning Gibbous1Wed
2Thu10:566.811:215.74:31-0.35:160.37:147:02Waning Gibbous2Thu
3Fri11:526.65:210.06:130.67:157:01Waning Gibbous3Fri
4Sat12:185.412:526.46:140.37:150.97:157:00Third Quarter4Sat
5Sun1:195.11:556.17:130.68:191.17:166:59Third Quarter5Sun
6Mon2:225.02:585.98:160.99:221.27:176:57Third Quarter6Mon
7Tue3:244.93:595.89:211.010:211.27:186:56Third Quarter7Tue
8Wed4:255.04:565.710:221.011:141.27:186:55Waning Crescent8Wed
9Thu5:215.25:465.711:191.07:196:53Waning Crescent9Thu
10Fri6:125.46:305.712:021.112:110.97:206:52Waning Crescent10Fri
11Sat6:575.67:105.712:450.912:580.87:206:51Waning Crescent11Sat
12Sun7:385.77:475.71:230.81:420.87:216:50New Moon12Sun
13Mon8:165.88:235.61:580.82:230.87:226:48New Moon13Mon
14Tue8:535.98:585.42:320.83:030.87:236:47New Moon14Tue
15Wed9:285.99:335.33:030.83:420.97:236:46New Moon15Wed
16Thu10:015.810:075.13:340.94:191.07:246:45Waxing Crescent16Thu
17Fri10:335.710:414.94:060.94:571.27:256:44Waxing Crescent17Fri
18Sat11:065.611:174.74:401.05:371.37:266:43Waxing Crescent18Sat
19Sun11:455.65:191.16:221.57:266:41Waxing Crescent19Sun
20Mon12:004.612:345.56:051.27:141.57:276:40First Quarter20Mon
21Tue12:524.61:345.57:001.28:131.57:286:39First Quarter21Tue
22Wed1:534.72:395.68:051.19:121.37:296:38First Quarter22Wed
23Thu2:594.93:435.79:131.010:101.07:306:37First Quarter23Thu
24Fri4:065.24:455.910:210.811:060.67:306:36Waxing Gibbous24Fri
25Sat5:105.65:446.011:250.511:590.27:316:35Waxing Gibbous25Sat
26Sun6:096.16:386.112:260.27:326:34Waxing Gibbous26Sun
27Mon7:046.57:306.212:49-0.11:240.07:336:33Full Moon27Mon
28Tue7:566.88:216.11:39-0.42:19-0.17:346:32Full Moon28Tue
29Wed8:487.09:135.92:28-0.53:14-0.27:346:31Full Moon29Wed
30Thu9:417.010:065.73:18-0.54:070.07:356:30Waning Gibbous30Thu
31Fri10:366.811:025.44:07-0.35:000.27:366:29Waning Gibbous31Fri
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 1:00 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 Fort Sumter, SC?

Fort Sumter, SC is currently in a transitional phase. Tonight's moon is 67% 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 shifting between spring and neap.

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 (67% illuminated). This places Fort Sumter, SC in a transitional tide cycle, so tidal ranges are shifting between spring and neap 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