Tides Today & Tomorrow in Fort Sumter, SC

TIDE TIMES for Sunday, August 9, 2026
The tide is currently rising in Fort Sumter, SC.
Next low tide (tomorrow) : 12:22 am (0.4 ft)
Next high tide : in 2h 41m at 5:54 pm (6.1 ft)
Sunset today : 8:10 pm
Sunrise tomorrow : 6:39 am
Moon phase : Waning Crescent (13% illuminated)
Tide Station Location : Station #8665728
Common Questions About Tides

Fort Sumter, SC Tides - May 2013

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed1:145.81:435.07:31-0.17:420.26:318:01Third Quarter1Wed
2Thu2:175.62:475.08:31-0.18:500.36:308:02Third Quarter2Thu
3Fri3:185.43:495.29:300.09:550.36:298:02Third Quarter3Fri
4Sat4:175.34:495.310:26-0.110:570.36:288:03Waning Crescent4Sat
5Sun5:145.25:445.511:18-0.211:550.26:288:04Waning Crescent5Sun
6Mon6:065.16:345.712:07-0.26:278:04Waning Crescent6Mon
7Tue6:535.17:185.812:470.112:53-0.26:268:05Waning Crescent7Tue
8Wed7:365.07:595.91:350.01:36-0.26:258:06New Moon8Wed
9Thu8:184.98:375.92:200.02:16-0.16:248:07New Moon9Thu
10Fri8:594.99:155.83:020.12:550.06:238:07New Moon10Fri
11Sat9:394.79:515.63:420.23:330.16:238:08New Moon11Sat
12Sun10:194.610:275.54:200.34:100.36:228:09Waxing Crescent12Sun
13Mon11:004.511:035.34:560.44:460.46:218:10Waxing Crescent13Mon
14Tue11:404.411:415.25:320.65:250.66:208:10Waxing Crescent14Tue
15Wed12:234.36:100.76:080.76:208:11Waxing Crescent15Wed
16Thu12:225.01:094.36:510.86:580.96:198:12First Quarter16Thu
17Fri1:074.91:594.47:380.77:550.96:188:12First Quarter17Fri
18Sat1:584.82:524.68:280.68:560.96:188:13First Quarter18Sat
19Sun2:524.83:474.89:200.59:570.76:178:14First Quarter19Sun
20Mon3:494.84:435.210:130.210:590.56:178:15Waxing Gibbous20Mon
21Tue4:484.95:405.511:070.011:580.26:168:15Waxing Gibbous21Tue
22Wed5:475.06:345.912:02-0.36:168:16Waxing Gibbous22Wed
23Thu6:435.17:266.212:55-0.112:55-0.56:158:17Full Moon23Thu
24Fri7:385.28:186.51:49-0.41:48-0.76:158:17Full Moon24Fri
25Sat8:335.29:126.52:43-0.62:42-0.86:148:18Full Moon25Sat
26Sun9:305.210:086.53:36-0.73:36-0.86:148:18Full Moon26Sun
27Mon10:295.211:046.34:28-0.74:30-0.76:138:19Waning Gibbous27Mon
28Tue11:295.25:21-0.75:26-0.56:138:20Waning Gibbous28Tue
29Wed12:026.112:305.16:15-0.56:25-0.26:138:20Waning Gibbous29Wed
30Thu1:005.81:315.17:11-0.47:280.16:128:21Third Quarter30Thu
31Fri1:575.52:315.28:08-0.38:330.36:128:22Third Quarter31Fri
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 9:08 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 13% 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 Waning Crescent (13% 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