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 3h 56m 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 - Aug 2042

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri8:084.88:466.12:200.22:13-0.26:338:18Full Moon1Fri
2Sat8:585.09:346.13:060.03:05-0.36:348:17Full Moon2Sat
3Sun9:505.210:216.13:52-0.23:57-0.36:358:16Waning Gibbous3Sun
4Mon10:435.411:095.94:37-0.44:49-0.26:358:15Waning Gibbous4Mon
5Tue11:375.55:23-0.45:440.06:368:14Waning Gibbous5Tue
6Wed12:005.712:345.76:11-0.46:430.26:378:13Waning Gibbous6Wed
7Thu12:535.41:325.77:03-0.37:470.56:378:12Third Quarter7Thu
8Fri1:505.12:325.87:58-0.28:530.66:388:11Third Quarter8Fri
9Sat2:494.83:335.88:550.09:580.76:398:10Third Quarter9Sat
10Sun3:504.64:365.89:540.111:010.76:398:09Waning Crescent10Sun
11Mon4:534.65:375.910:540.111:590.66:408:08Waning Crescent11Mon
12Tue5:544.66:335.911:520.16:418:07Waning Crescent12Tue
13Wed6:504.77:225.912:530.612:460.16:418:06Waning Crescent13Wed
14Thu7:404.88:075.91:420.51:370.16:428:05New Moon14Thu
15Fri8:274.98:485.82:280.42:250.26:438:04New Moon15Fri
16Sat9:115.09:275.73:090.43:100.36:438:03New Moon16Sat
17Sun9:545.010:045.53:470.53:520.46:448:02New Moon17Sun
18Mon10:355.010:405.34:220.54:320.66:458:01Waxing Crescent18Mon
19Tue11:155.011:165.14:540.65:120.86:458:00Waxing Crescent19Tue
20Wed11:535.011:524.95:250.75:531.16:467:59Waxing Crescent20Wed
21Thu12:335.05:570.86:381.36:477:57Waxing Crescent21Thu
22Fri12:324.71:165.06:340.97:281.46:477:56First Quarter22Fri
23Sat1:164.52:035.07:171.08:241.56:487:55First Quarter23Sat
24Sun2:054.42:555.18:071.09:221.56:497:54First Quarter24Sun
25Mon2:584.33:535.39:041.010:201.46:497:53First Quarter25Mon
26Tue3:574.44:545.510:040.811:171.26:507:51Waxing Gibbous26Tue
27Wed4:594.55:525.711:050.66:517:50Waxing Gibbous27Wed
28Thu5:594.86:456.012:110.912:050.46:517:49Waxing Gibbous28Thu
29Fri6:545.17:346.31:020.61:010.16:527:48Full Moon29Fri
30Sat7:465.58:226.41:510.21:56-0.16:537:46Full Moon30Sat
31Sun8:385.89:106.42:38-0.12:50-0.26:537:45Full Moon31Sun
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