Tides Today & Tomorrow in Fort Sumter, SC

TIDE TIMES for Saturday, August 8, 2026
The tide is currently rising in Fort Sumter, SC.
Next low tide : 11:20 pm (0.6 ft)
Next high tide : in 2h 53m at 4:46 pm (5.9 ft)
Sunset today : 8:11 pm
Sunrise tomorrow : 6:38 am
Moon phase : Waning Crescent (22% illuminated)
Tide Station Location : Station #8665728
Common Questions About Tides

Fort Sumter, SC Tides - May 2015

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri6:514.97:255.512:490.412:560.36:328:00Waxing Gibbous1Fri
2Sat7:334.98:045.61:320.31:340.26:318:01Full Moon2Sat
3Sun8:124.98:415.72:140.12:110.16:308:02Full Moon3Sun
4Mon8:494.99:155.72:550.12:480.06:298:03Full Moon4Mon
5Tue9:264.89:505.73:350.03:270.06:288:03Full Moon5Tue
6Wed10:044.810:265.74:160.04:070.06:278:04Waning Gibbous6Wed
7Thu10:454.711:075.64:580.14:510.16:268:05Waning Gibbous7Thu
8Fri11:314.711:555.65:430.15:390.26:258:06Waning Gibbous8Fri
9Sat12:254.76:340.16:350.36:258:06Waning Gibbous9Sat
10Sun12:525.51:274.87:300.17:380.36:248:07Third Quarter10Sun
11Mon1:565.42:335.08:290.08:460.36:238:08Third Quarter11Mon
12Tue3:015.33:395.29:28-0.19:550.26:228:09Third Quarter12Tue
13Wed4:075.34:445.510:27-0.311:010.06:218:09Waning Crescent13Wed
14Thu5:115.45:465.911:24-0.56:218:10Waning Crescent14Thu
15Fri6:125.46:436.212:03-0.212:19-0.76:208:11Waning Crescent15Fri
16Sat7:075.47:366.41:02-0.41:11-0.86:198:11New Moon16Sat
17Sun8:005.48:266.41:57-0.52:02-0.86:198:12New Moon17Sun
18Mon8:515.39:156.42:49-0.62:51-0.76:188:13New Moon18Mon
19Tue9:425.210:036.23:39-0.53:39-0.66:178:13New Moon19Tue
20Wed10:325.010:505.94:27-0.34:26-0.36:178:14Waxing Crescent20Wed
21Thu11:224.811:365.65:14-0.15:120.06:168:15Waxing Crescent21Thu
22Fri12:124.76:000.26:000.46:168:16Waxing Crescent22Fri
23Sat12:225.31:034.66:480.46:500.66:158:16Waxing Crescent23Sat
24Sun1:105.11:554.57:370.67:450.96:158:17First Quarter24Sun
25Mon1:584.92:474.68:260.68:411.06:148:18First Quarter25Mon
26Tue2:484.73:384.69:130.79:371.06:148:18First Quarter26Tue
27Wed3:384.64:294.89:590.610:310.96:138:19First Quarter27Wed
28Thu4:294.65:195.010:440.511:230.76:138:19Waxing Gibbous28Thu
29Fri5:204.66:065.211:280.46:138:20Waxing Gibbous29Fri
30Sat6:094.66:505.412:130.512:110.26:128:21Waxing Gibbous30Sat
31Sun6:544.77:315.61:000.412:540.16:128:21Waxing Gibbous31Sun
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 8:03 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 22% 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 Waning Crescent (22% 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