Tides Today & Tomorrow in Fort Sumter, SC

TIDE TIMES for Sunday, June 28, 2026
The tide is currently falling in Fort Sumter, SC.
Next low tide : in 4h 17m at 1:25 pm (0.3 ft)
Next high tide : 8:04 pm (5.5 ft)
Sunset today : 8:31 pm
Sunrise tomorrow : 6:14 am
Moon phase : Full Moon (98% illuminated)
Tide Station Location : Station #8665728
Common Questions About Tides

Fort Sumter, SC Tides - Aug 2050

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon6:435.07:266.212:540.112:54-0.46:338:17Full Moon1Mon
2Tue7:395.38:186.41:46-0.21:50-0.66:348:17Full Moon2Tue
3Wed8:355.59:106.42:37-0.52:45-0.76:358:16Full Moon3Wed
4Thu9:315.710:026.33:26-0.73:40-0.76:358:15Full Moon4Thu
5Fri10:285.910:556.24:16-0.84:35-0.66:368:14Waning Gibbous5Fri
6Sat11:245.911:485.95:05-0.85:30-0.36:378:13Waning Gibbous6Sat
7Sun12:225.95:55-0.76:280.06:378:12Waning Gibbous7Sun
8Mon12:435.61:215.96:48-0.57:300.36:388:11Third Quarter8Mon
9Tue1:405.32:205.87:44-0.28:340.56:398:10Third Quarter9Tue
10Wed2:385.03:195.78:41-0.19:360.66:398:09Third Quarter10Wed
11Thu3:354.94:175.79:390.110:360.76:408:08Waning Crescent11Thu
12Fri4:334.85:135.710:350.211:320.76:418:07Waning Crescent12Fri
13Sat5:304.86:055.711:300.26:418:06Waning Crescent13Sat
14Sun6:224.96:515.712:230.612:210.26:428:05Waning Crescent14Sun
15Mon7:105.07:335.71:090.51:090.26:438:04New Moon15Mon
16Tue7:545.18:125.71:520.51:530.26:448:03New Moon16Tue
17Wed8:365.18:495.72:320.42:360.36:448:02New Moon17Wed
18Thu9:175.29:265.63:080.43:160.46:458:01New Moon18Thu
19Fri9:565.210:015.43:420.53:550.56:468:00Waxing Crescent19Fri
20Sat10:335.110:345.34:140.54:330.76:467:58Waxing Crescent20Sat
21Sun11:085.111:085.14:450.65:110.86:477:57Waxing Crescent21Sun
22Mon11:435.111:434.95:170.65:521.06:487:56Waxing Crescent22Mon
23Tue12:215.15:540.76:381.16:487:55First Quarter23Tue
24Wed12:244.81:065.26:370.77:311.26:497:54First Quarter24Wed
25Thu1:124.82:005.37:280.78:301.26:507:53First Quarter25Thu
26Fri2:074.72:595.48:260.69:301.16:507:51First Quarter26Fri
27Sat3:084.84:035.69:280.510:310.96:517:50Waxing Gibbous27Sat
28Sun4:135.05:075.910:320.311:300.66:517:49Waxing Gibbous28Sun
29Mon5:205.26:086.211:360.16:527:48Waxing Gibbous29Mon
30Tue6:235.67:036.412:260.212:36-0.26:537:46Waxing Gibbous30Tue
31Wed7:205.97:566.61:20-0.11:34-0.46:537:45Full Moon31Wed
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 4:44 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 spring phase. Tonight's moon is 98% 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 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 Full Moon (98% illuminated). This places Fort Sumter, 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