Tides Today & Tomorrow in Fort Sumter, SC

TIDE TIMES for Thursday, July 16, 2026
The tide is currently falling in Fort Sumter, SC.
Next low tide (tomorrow) : in 6h 15m at 5:02 am (-0.4 ft)
Next high tide (tomorrow) : 11:21 am (5.2 ft)
Sunset today : 8:28 pm
Sunrise tomorrow : 6:23 am
Moon phase : Waxing Crescent (7% illuminated)
Tide Station Location : Station #8665728
Common Questions About Tides

Fort Sumter, SC Tides - Jul 2076

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed8:484.59:075.62:560.22:430.06:158:31New Moon1Wed
2Thu9:324.49:465.53:370.23:240.16:168:31New Moon2Thu
3Fri10:144.410:245.44:150.34:030.36:168:31Waxing Crescent3Fri
4Sat10:564.311:015.24:510.44:420.46:178:31Waxing Crescent4Sat
5Sun11:384.311:385.15:260.55:220.66:178:31Waxing Crescent5Sun
6Mon12:204.26:010.66:050.76:188:31Waxing Crescent6Mon
7Tue12:174.91:034.36:380.66:530.96:188:30First Quarter7Tue
8Wed12:584.81:484.47:190.67:480.96:198:30First Quarter8Wed
9Thu1:434.72:364.68:050.58:460.96:198:30First Quarter9Thu
10Fri2:334.63:264.98:540.39:460.86:208:30First Quarter10Fri
11Sat3:264.54:225.29:460.210:470.76:208:29Waxing Gibbous11Sat
12Sun4:244.55:205.510:420.011:470.46:218:29Waxing Gibbous12Sun
13Mon5:264.66:185.811:39-0.26:228:29Waxing Gibbous13Mon
14Tue6:264.77:146.112:450.112:37-0.46:228:28Waxing Gibbous14Tue
15Wed7:254.88:096.31:40-0.11:34-0.66:238:28Full Moon15Wed
16Thu8:225.09:046.42:34-0.42:30-0.76:238:27Full Moon16Thu
17Fri9:215.110:006.43:27-0.63:27-0.76:248:27Full Moon17Fri
18Sat10:215.210:566.34:18-0.74:22-0.66:258:26Waning Gibbous18Sat
19Sun11:205.311:506.15:09-0.75:18-0.56:258:26Waning Gibbous19Sun
20Mon12:195.46:00-0.66:17-0.26:268:25Waning Gibbous20Mon
21Tue12:455.81:185.46:52-0.57:190.16:278:25Third Quarter21Tue
22Wed1:395.52:165.57:46-0.38:220.36:278:24Third Quarter22Wed
23Thu2:335.13:125.58:40-0.29:250.56:288:24Third Quarter23Thu
24Fri3:274.94:075.59:32-0.110:250.66:288:23Third Quarter24Fri
25Sat4:214.75:015.610:240.011:220.66:298:22Waning Crescent25Sat
26Sun5:154.65:535.611:150.16:308:22Waning Crescent26Sun
27Mon6:064.56:405.612:140.612:050.16:308:21Waning Crescent27Mon
28Tue6:554.67:235.71:030.512:520.26:318:20Waning Crescent28Tue
29Wed7:404.68:045.71:480.51:360.26:328:19New Moon29Wed
30Thu8:244.68:435.62:300.52:190.26:338:19New Moon30Thu
31Fri9:064.69:215.63:090.53:000.36:338:18New Moon31Fri
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 8:11 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 7% 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 Waxing Crescent (7% 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