Tides Today & Tomorrow in Fort Sumter, SC

TIDE TIMES for Wednesday, August 12, 2026
The tide is currently falling in Fort Sumter, SC.
Next low tide : in 10m at 2:12 am (-0.1 ft)
Next high tide : 8:16 am (5.3 ft)
Sunset today : 8:07 pm
Sunrise tomorrow : 6:41 am
Moon phase : New Moon (0% illuminated)
Tide Station Location : Station #8665728
Common Questions About Tides

Fort Sumter, SC Tides - Oct 2008

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed10:026.110:065.43:370.54:140.77:147:03Waxing Crescent1Wed
2Thu10:416.010:455.24:120.74:550.97:147:02Waxing Crescent2Thu
3Fri11:205.811:265.04:470.95:361.27:157:01Waxing Crescent3Fri
4Sat12:025.65:231.16:201.47:166:59Waxing Crescent4Sat
5Sun12:094.812:495.46:031.37:081.67:166:58First Quarter5Sun
6Mon12:584.71:405.36:491.48:011.77:176:57First Quarter6Mon
7Tue1:514.62:355.37:441.58:551.77:186:56First Quarter7Tue
8Wed2:464.63:295.38:431.59:471.67:186:54First Quarter8Wed
9Thu3:424.84:235.49:431.410:371.47:196:53Waxing Gibbous9Thu
10Fri4:385.05:155.610:421.211:241.17:206:52Waxing Gibbous10Fri
11Sat5:315.36:025.711:381.07:216:51Waxing Gibbous11Sat
12Sun6:205.76:475.812:100.812:320.77:216:49Waxing Gibbous12Sun
13Mon7:066.17:305.912:540.51:230.57:226:48Full Moon13Mon
14Tue7:506.48:145.91:380.22:140.37:236:47Full Moon14Tue
15Wed8:366.69:005.82:230.03:040.37:246:46Full Moon15Wed
16Thu9:246.79:495.63:09-0.13:550.37:246:45Waning Gibbous16Thu
17Fri10:176.710:435.43:58-0.14:470.47:256:43Waning Gibbous17Fri
18Sat11:136.611:415.34:480.05:420.67:266:42Waning Gibbous18Sat
19Sun12:156.45:420.26:420.87:276:41Waning Gibbous19Sun
20Mon12:465.11:216.26:430.57:461.07:276:40Third Quarter20Mon
21Tue1:555.12:286.07:500.68:511.07:286:39Third Quarter21Tue
22Wed3:025.13:315.98:580.79:510.97:296:38Third Quarter22Wed
23Thu4:065.34:315.810:030.710:470.77:306:37Waning Crescent23Thu
24Fri5:075.65:265.811:050.611:380.67:316:36Waning Crescent24Fri
25Sat6:015.86:155.712:010.57:316:35Waning Crescent25Sat
26Sun6:506.06:595.712:250.512:530.57:326:34Waning Crescent26Sun
27Mon7:336.27:405.61:080.41:410.57:336:33New Moon27Mon
28Tue8:146.28:195.41:480.42:260.57:346:32New Moon28Tue
29Wed8:536.28:575.32:260.43:080.67:356:31New Moon29Wed
30Thu9:316.19:365.13:030.63:490.77:366:30New Moon30Thu
31Fri10:085.910:155.03:380.74:280.97:366:29Waxing Crescent31Fri
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 5:14 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 0% 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 New Moon (0% 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