Tides Today & Tomorrow in Fort Sumter, SC

TIDE TIMES for Thursday, August 6, 2026
The tide is currently rising in Fort Sumter, SC.
Next low tide : 9:06 pm (0.9 ft)
Next high tide : in 1h 45m at 2:29 pm (5.6 ft)
Sunset today : 8:13 pm
Sunrise tomorrow : 6:37 am
Moon phase : Third Quarter (44% illuminated)
Tide Station Location : Station #8665728
Common Questions About Tides

Fort Sumter, SC Tides - Jul 2100

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu3:454.24:234.99:500.510:471.06:158:31Waning Crescent1Thu
2Fri4:364.15:135.110:350.411:390.96:158:31Waning Crescent2Fri
3Sat5:284.16:015.211:210.46:168:31Waning Crescent3Sat
4Sun6:194.16:475.412:280.812:080.36:168:31Waning Crescent4Sun
5Mon7:064.27:305.51:140.712:540.26:178:31New Moon5Mon
6Tue7:504.28:125.61:570.51:390.16:178:31New Moon6Tue
7Wed8:334.38:525.72:390.42:250.06:188:31New Moon7Wed
8Thu9:164.49:335.73:200.33:11-0.16:188:30New Moon8Thu
9Fri10:004.510:145.74:010.13:57-0.16:198:30Waxing Crescent9Fri
10Sat10:464.610:575.64:410.04:45-0.16:198:30Waxing Crescent10Sat
11Sun11:344.811:425.55:23-0.15:350.06:208:30Waxing Crescent11Sun
12Mon12:275.06:08-0.16:310.26:218:29Waxing Crescent12Mon
13Tue12:315.31:245.26:57-0.27:330.36:218:29First Quarter13Tue
14Wed1:255.12:235.47:50-0.28:380.46:228:29First Quarter14Wed
15Thu2:234.83:245.68:45-0.29:440.46:228:28First Quarter15Thu
16Fri3:244.74:275.79:44-0.210:490.46:238:28Waxing Gibbous16Fri
17Sat4:294.55:315.910:44-0.211:510.36:248:27Waxing Gibbous17Sat
18Sun5:354.56:326.011:45-0.36:248:27Waxing Gibbous18Sun
19Mon6:374.67:286.112:500.112:43-0.36:258:26Waxing Gibbous19Mon
20Tue7:344.78:206.11:440.01:39-0.36:258:26Full Moon20Tue
21Wed8:284.89:096.02:35-0.12:32-0.36:268:25Full Moon21Wed
22Thu9:204.89:565.83:23-0.13:23-0.16:278:25Full Moon22Thu
23Fri10:104.810:395.64:080.04:100.16:278:24Waning Gibbous23Fri
24Sat10:574.811:205.44:490.04:560.36:288:23Waning Gibbous24Sat
25Sun11:434.85:290.25:410.66:298:23Waning Gibbous25Sun
26Mon12:005.112:274.86:080.36:280.96:298:22Waning Gibbous26Mon
27Tue12:414.81:134.86:470.57:191.16:308:21Third Quarter27Tue
28Wed1:244.61:594.97:280.68:131.36:318:21Third Quarter28Wed
29Thu2:104.32:464.98:110.79:081.36:318:20Third Quarter29Thu
30Fri2:594.23:365.08:580.710:031.36:328:19Third Quarter30Fri
31Sat3:514.14:285.19:480.710:581.26:338:18Waning Crescent31Sat
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 5:47 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 neap phase. Tonight's moon is 44% 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 minimum.

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 Third Quarter (44% illuminated). This places Fort Sumter, SC in a neap tide cycle, so tidal ranges are near their weekly minimum 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