Tides Today & Tomorrow in Fort Sumter, SC

TIDE TIMES for Sunday, July 19, 2026
The tide is currently falling in Fort Sumter, SC.
Next low tide : in 2h 54m at 6:36 am (-0.1 ft)
Next high tide : 1:08 pm (5.2 ft)
Sunset today : 8:26 pm
Sunrise tomorrow : 6:25 am
Moon phase : First Quarter (32% illuminated)
Tide Station Location : Station #8665728
Common Questions About Tides

Fort Sumter, SC Tides - Jul 2077

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu4:344.35:275.110:400.411:420.76:158:31Waxing Gibbous1Thu
2Fri5:274.36:155.411:280.36:168:31Waxing Gibbous2Fri
3Sat6:184.37:015.612:340.512:180.16:168:31Waxing Gibbous3Sat
4Sun7:074.47:475.81:230.31:07-0.16:178:31Full Moon4Sun
5Mon7:554.58:335.92:110.11:57-0.26:178:31Full Moon5Mon
6Tue8:444.69:216.02:59-0.12:48-0.36:188:31Full Moon6Tue
7Wed9:364.710:116.03:46-0.23:39-0.46:188:30Full Moon7Wed
8Thu10:304.811:026.04:33-0.34:31-0.36:198:30Waning Gibbous8Thu
9Fri11:264.911:545.85:21-0.45:26-0.26:198:30Waning Gibbous9Fri
10Sat12:245.06:11-0.46:240.06:208:30Waning Gibbous10Sat
11Sun12:485.61:245.27:04-0.47:270.16:208:29Third Quarter11Sun
12Mon1:445.42:245.47:58-0.48:330.36:218:29Third Quarter12Mon
13Tue2:415.13:235.58:53-0.49:380.36:218:29Third Quarter13Tue
14Wed3:384.94:225.79:48-0.410:410.36:228:28Waning Crescent14Wed
15Thu4:374.75:215.810:43-0.311:420.36:238:28Waning Crescent15Thu
16Fri5:364.66:165.911:37-0.36:238:27Waning Crescent16Fri
17Sat6:324.67:075.912:380.212:30-0.36:248:27Waning Crescent17Sat
18Sun7:244.67:545.91:300.21:21-0.26:248:26New Moon18Sun
19Mon8:124.68:385.82:190.22:09-0.16:258:26New Moon19Mon
20Tue9:004.69:215.73:040.22:560.06:268:25New Moon20Tue
21Wed9:454.610:025.53:470.23:400.16:268:25New Moon21Wed
22Thu10:304.610:405.44:260.34:210.36:278:24Waxing Crescent22Thu
23Fri11:134.511:185.25:020.45:020.56:288:24Waxing Crescent23Fri
24Sat11:564.511:565.05:370.55:440.76:288:23Waxing Crescent24Sat
25Sun12:394.56:120.66:290.96:298:22Waxing Crescent25Sun
26Mon12:364.81:244.66:480.77:191.16:308:22First Quarter26Mon
27Tue1:184.62:094.77:290.78:131.26:308:21First Quarter27Tue
28Wed2:034.52:564.88:130.79:091.26:318:20First Quarter28Wed
29Thu2:524.33:465.09:010.610:071.16:328:20First Quarter29Thu
30Fri3:454.34:415.29:540.511:041.06:328:19Waxing Gibbous30Fri
31Sat4:434.35:375.510:490.46:338:18Waxing Gibbous31Sat
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 9:52 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 transitional phase. Tonight's moon is 32% 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 First Quarter (32% 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