Tides Today & Tomorrow in Fort Sumter, SC

TIDE TIMES for Saturday, August 1, 2026
The tide is currently rising in Fort Sumter, SC.
Next low tide (tomorrow) : 4:58 am (0.2 ft)
Next high tide : in 5h 52m at 10:39 pm (5.3 ft)
Sunset today : 8:18 pm
Sunrise tomorrow : 6:33 am
Moon phase : Waning Gibbous (91% illuminated)
Tide Station Location : Station #8665728
Common Questions About Tides

Fort Sumter, SC Tides - May 2092

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu5:085.25:355.211:150.111:420.46:318:02Waning Crescent1Thu
2Fri5:595.16:235.412:030.06:308:02Waning Crescent2Fri
3Sat6:455.17:075.512:340.312:470.06:298:03Waning Crescent3Sat
4Sun7:275.17:475.71:210.21:280.06:288:04New Moon4Sun
5Mon8:065.08:245.72:050.12:060.06:278:04New Moon5Mon
6Tue8:454.99:015.72:460.12:430.06:268:05New Moon6Tue
7Wed9:244.89:365.63:250.23:180.16:258:06New Moon7Wed
8Thu10:024.710:095.54:020.33:520.26:248:07Waxing Crescent8Thu
9Fri10:404.510:425.44:370.44:270.46:248:07Waxing Crescent9Fri
10Sat11:174.411:175.35:130.55:040.56:238:08Waxing Crescent10Sat
11Sun11:554.311:555.25:500.65:450.66:228:09Waxing Crescent11Sun
12Mon12:394.26:320.76:330.76:218:10Waxing Crescent12Mon
13Tue12:415.11:294.37:210.77:290.76:218:10First Quarter13Tue
14Wed1:345.12:254.48:140.68:310.76:208:11First Quarter14Wed
15Thu2:325.13:244.79:090.59:350.56:198:12First Quarter15Thu
16Fri3:325.14:255.010:060.210:390.36:198:12Waxing Gibbous16Fri
17Sat4:355.25:265.511:02-0.111:410.06:188:13Waxing Gibbous17Sat
18Sun5:375.36:235.911:57-0.46:178:14Waxing Gibbous18Sun
19Mon6:355.47:176.312:41-0.312:50-0.76:178:15Waxing Gibbous19Mon
20Tue7:315.58:116.51:38-0.61:43-0.86:168:15Full Moon20Tue
21Wed8:265.49:056.62:33-0.82:36-0.96:168:16Full Moon21Wed
22Thu9:235.410:006.63:27-0.93:28-0.96:158:17Full Moon22Thu
23Fri10:205.310:576.44:20-0.84:21-0.76:158:17Waning Gibbous23Fri
24Sat11:195.111:546.25:14-0.75:16-0.46:148:18Waning Gibbous24Sat
25Sun12:195.06:08-0.56:12-0.16:148:19Waning Gibbous25Sun
26Mon12:525.91:194.97:05-0.27:140.26:148:19Third Quarter26Mon
27Tue1:495.62:194.98:02-0.18:180.46:138:20Third Quarter27Tue
28Wed2:455.33:164.98:580.09:200.56:138:20Third Quarter28Wed
29Thu3:395.14:115.09:500.110:200.66:128:21Third Quarter29Thu
30Fri4:304.95:035.110:400.111:150.56:128:22Waning Crescent30Fri
31Sat5:204.85:525.311:260.16:128:22Waning Crescent31Sat
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 1:48 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 91% 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 Gibbous (91% 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