Tides Today & Tomorrow in Fort Sumter, SC

TIDE TIMES for Sunday, July 19, 2026
The tide is currently rising in Fort Sumter, SC.
Next low tide : 7:02 pm (0.4 ft)
Next high tide : in 37m at 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 - Aug 2077

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun5:414.46:315.712:000.711:47 AM0.26:348:17Waxing Gibbous1Sun
2Mon6:384.67:226.012:530.512:430.06:348:16Waxing Gibbous2Mon
3Tue7:314.88:136.21:440.21:38-0.36:358:15Full Moon3Tue
4Wed8:245.19:036.32:34-0.12:32-0.46:368:15Full Moon4Wed
5Thu9:195.39:546.33:23-0.33:26-0.56:368:14Full Moon5Thu
6Fri10:145.410:456.24:11-0.44:20-0.46:378:13Waning Gibbous6Fri
7Sat11:105.611:376.04:59-0.55:15-0.36:388:12Waning Gibbous7Sat
8Sun12:075.75:47-0.56:120.06:388:11Waning Gibbous8Sun
9Mon12:305.71:065.86:38-0.47:140.36:398:10Third Quarter9Mon
10Tue1:265.42:055.87:32-0.28:180.56:408:09Third Quarter10Tue
11Wed2:235.13:045.88:28-0.19:230.66:418:08Third Quarter11Wed
12Thu3:214.94:035.89:250.010:250.76:418:07Third Quarter12Thu
13Fri4:204.75:035.810:220.111:250.76:428:06Waning Crescent13Fri
14Sat5:204.75:595.811:180.26:438:05Waning Crescent14Sat
15Sun6:154.76:495.812:190.612:120.26:438:04Waning Crescent15Sun
16Mon7:064.87:345.81:090.61:030.26:448:03New Moon16Mon
17Tue7:524.98:155.81:550.51:500.26:458:01New Moon17Tue
18Wed8:365.08:545.82:370.52:350.36:458:00New Moon18Wed
19Thu9:195.09:325.73:160.53:170.46:467:59New Moon19Thu
20Fri10:005.010:085.53:520.63:570.56:477:58Waxing Crescent20Fri
21Sat10:395.010:435.34:240.64:350.76:477:57Waxing Crescent21Sat
22Sun11:165.011:175.14:550.75:140.96:487:56Waxing Crescent22Sun
23Mon11:535.011:534.95:260.85:551.16:497:54Waxing Crescent23Mon
24Tue12:315.06:000.96:401.36:497:53Waxing Crescent24Tue
25Wed12:324.81:145.16:380.97:321.46:507:52First Quarter25Wed
26Thu1:174.62:025.17:250.98:301.46:517:51First Quarter26Thu
27Fri2:084.52:585.38:180.99:301.46:517:50First Quarter27Fri
28Sat3:054.53:585.59:170.810:301.26:527:48Waxing Gibbous28Sat
29Sun4:074.65:035.710:190.611:290.96:527:47Waxing Gibbous29Sun
30Mon5:124.86:036.011:230.46:537:46Waxing Gibbous30Mon
31Tue6:145.16:586.312:250.612:230.16:547:44Waxing Gibbous31Tue
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 4:05 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 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