Tides Today & Tomorrow in Fort Sumter, SC

TIDE TIMES for Monday, July 13, 2026
The tide is currently falling in Fort Sumter, SC.
Next low tide (tomorrow) : in 2h 36m at 2:31 am (-0.3 ft)
Next high tide (tomorrow) : 8:29 am (4.9 ft)
Sunset today : 8:29 pm
Sunrise tomorrow : 6:21 am
Moon phase : New Moon (1% illuminated)
Tide Station Location : Station #8665728
Common Questions About Tides

Fort Sumter, SC Tides - Oct 2073

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun8:246.68:416.62:08-0.22:36-0.47:147:03New Moon1Sun
2Mon9:186.89:346.52:58-0.43:31-0.47:147:02New Moon2Mon
3Tue10:126.810:286.33:48-0.44:24-0.37:157:00Waxing Crescent3Tue
4Wed11:086.811:236.04:37-0.35:190.07:166:59Waxing Crescent4Wed
5Thu12:066.65:28-0.16:160.37:166:58Waxing Crescent5Thu
6Fri12:205.71:066.46:230.27:160.67:176:57First Quarter6Fri
7Sat1:205.52:076.27:220.58:170.87:186:55First Quarter7Sat
8Sun2:215.33:066.08:250.89:180.97:196:54First Quarter8Sun
9Mon3:215.24:045.99:270.910:150.97:196:53First Quarter9Mon
10Tue4:195.34:595.910:260.911:080.97:206:52Waxing Gibbous10Tue
11Wed5:145.45:495.811:220.911:560.87:216:50Waxing Gibbous11Wed
12Thu6:055.56:345.812:130.87:216:49Waxing Gibbous12Thu
13Fri6:505.77:155.812:400.71:000.87:226:48Waxing Gibbous13Fri
14Sat7:315.87:545.81:210.61:430.77:236:47Full Moon14Sat
15Sun8:105.98:325.71:590.62:240.77:246:45Full Moon15Sun
16Mon8:475.99:095.62:350.63:030.87:246:44Full Moon16Mon
17Tue9:235.99:455.43:090.63:410.87:256:43Full Moon17Tue
18Wed9:565.910:205.23:430.74:171.07:266:42Waning Gibbous18Wed
19Thu10:295.810:545.04:170.84:541.17:276:41Waning Gibbous19Thu
20Fri11:035.711:294.94:530.85:321.27:286:40Waning Gibbous20Fri
21Sat11:415.75:320.96:161.37:286:39Waning Gibbous21Sat
22Sun12:104.812:285.66:191.07:071.47:296:38Third Quarter22Sun
23Mon1:024.81:245.67:131.08:051.37:306:36Third Quarter23Mon
24Tue2:024.92:265.78:151.09:051.17:316:35Third Quarter24Tue
25Wed3:075.13:305.89:200.810:040.97:326:34Third Quarter25Wed
26Thu4:125.34:346.010:250.611:020.57:326:33Waning Crescent26Thu
27Fri5:175.75:366.111:280.311:580.17:336:32Waning Crescent27Fri
28Sat6:166.26:336.312:280.07:346:31Waning Crescent28Sat
29Sun7:126.57:276.412:51-0.21:25-0.37:356:30New Moon29Sun
30Mon8:056.88:206.31:43-0.42:21-0.47:366:30New Moon30Mon
31Tue8:597.09:146.22:34-0.63:15-0.57:376:29New Moon31Tue
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 5:30 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 1% 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 (1% 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