Tides Today & Tomorrow in Fort Sumter, SC

TIDE TIMES for Monday, June 29, 2026
The tide is currently rising in Fort Sumter, SC.
Next low tide : 2:05 pm (0.3 ft)
Next high tide : in 4h 18m at 8:09 am (4.3 ft)
Sunset today : 8:31 pm
Sunrise tomorrow : 6:14 am
Moon phase : Full Moon (100% illuminated)
Tide Station Location : Station #8665728
Common Questions About Tides

Fort Sumter, SC Tides - Sep 2051

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri5:395.26:106.011:380.26:547:44Waning Crescent1Fri
2Sat6:325.46:586.012:250.512:310.26:557:43Waning Crescent2Sat
3Sun7:215.57:406.01:130.41:210.26:557:42New Moon3Sun
4Mon8:055.68:205.91:560.42:070.26:567:40New Moon4Mon
5Tue8:485.68:585.82:370.42:510.36:567:39New Moon5Tue
6Wed9:285.69:355.73:150.43:320.56:577:38New Moon6Wed
7Thu10:085.610:125.53:500.54:120.66:587:36Waxing Crescent7Thu
8Fri10:465.510:485.34:220.64:500.86:587:35Waxing Crescent8Fri
9Sat11:235.411:255.14:550.85:291.06:597:34Waxing Crescent9Sat
10Sun12:015.35:280.96:111.27:007:32Waxing Crescent10Sun
11Mon12:055.012:435.36:061.06:571.47:007:31First Quarter11Mon
12Tue12:484.81:305.36:511.17:501.57:017:30First Quarter12Tue
13Wed1:374.82:225.37:431.18:461.57:027:28First Quarter13Wed
14Thu2:314.83:195.48:411.09:421.37:027:27First Quarter14Thu
15Fri3:294.94:175.69:420.910:381.17:037:26Waxing Gibbous15Fri
16Sat4:305.15:165.810:430.711:330.87:037:24Waxing Gibbous16Sat
17Sun5:305.46:116.111:430.47:047:23Waxing Gibbous17Sun
18Mon6:275.87:026.312:250.412:410.17:057:21Waxing Gibbous18Mon
19Tue7:206.27:516.51:160.01:36-0.17:057:20Full Moon19Tue
20Wed8:126.58:416.52:05-0.22:30-0.27:067:19Full Moon20Wed
21Thu9:056.79:336.42:54-0.43:24-0.37:077:17Full Moon21Thu
22Fri9:596.810:266.23:43-0.54:18-0.27:077:16Waning Gibbous22Fri
23Sat10:556.711:226.04:33-0.45:120.07:087:15Waning Gibbous23Sat
24Sun11:536.65:24-0.26:090.37:097:13Waning Gibbous24Sun
25Mon12:205.712:536.46:190.07:100.67:097:12Third Quarter25Mon
26Tue1:215.51:556.27:180.38:130.87:107:11Third Quarter26Tue
27Wed2:235.42:576.08:210.59:150.97:117:09Third Quarter27Wed
28Thu3:245.33:565.99:230.610:140.97:117:08Third Quarter28Thu
29Fri4:245.44:535.910:230.711:090.97:127:07Waning Crescent29Fri
30Sat5:215.55:445.911:200.77:137:05Waning Crescent30Sat
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 11:07 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 spring phase. Tonight's moon is 100% 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 (100% 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