Tides Today & Tomorrow in Fort Sumter, SC

TIDE TIMES for Monday, June 22, 2026
The tide is currently rising in Fort Sumter, SC.
Next low tide : 8:54 am (0.1 ft)
Next high tide : in 2h 13m at 2:37 am (4.9 ft)
Sunset today : 8:30 pm
Sunrise tomorrow : 6:12 am
Moon phase : First Quarter (58% illuminated)
Tide Station Location : Station #8665728
Common Questions About Tides

Fort Sumter, SC Tides - Jul 2040

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun2:205.32:575.28:30-0.29:020.46:158:31Third Quarter1Sun
2Mon3:125.03:515.39:21-0.210:030.56:168:31Third Quarter2Mon
3Tue4:044.74:445.410:11-0.111:010.56:168:31Waning Crescent3Tue
4Wed4:564.55:355.510:590.011:540.56:168:31Waning Crescent4Wed
5Thu5:464.46:215.511:460.06:178:31Waning Crescent5Thu
6Fri6:344.47:045.612:440.512:310.16:178:31Waning Crescent6Fri
7Sat7:194.47:455.61:300.41:150.16:188:30New Moon7Sat
8Sun8:034.48:255.62:130.41:570.16:188:30New Moon8Sun
9Mon8:464.49:045.52:540.42:380.26:198:30New Moon9Mon
10Tue9:284.39:425.43:320.43:180.26:208:30New Moon10Tue
11Wed10:094.310:185.34:080.43:560.36:208:29Waxing Crescent11Wed
12Thu10:484.310:525.24:420.54:350.46:218:29Waxing Crescent12Thu
13Fri11:264.311:275.15:150.55:160.56:218:29Waxing Crescent13Fri
14Sat12:044.45:500.56:000.76:228:28Waxing Crescent14Sat
15Sun12:045.012:464.56:290.46:500.86:228:28First Quarter15Sun
16Mon12:474.91:334.77:120.47:480.86:238:27First Quarter16Mon
17Tue1:354.82:265.08:010.28:490.86:248:27First Quarter17Tue
18Wed2:294.73:235.28:540.19:530.76:248:26First Quarter18Wed
19Thu3:284.64:255.59:510.010:570.56:258:26Waxing Gibbous19Thu
20Fri4:324.65:305.810:51-0.26:268:25Waxing Gibbous20Fri
21Sat5:394.76:336.112:000.311:53 AM-0.46:268:25Waxing Gibbous21Sat
22Sun6:434.87:326.41:000.012:54-0.56:278:24Full Moon22Sun
23Mon7:445.08:306.51:56-0.31:53-0.76:288:24Full Moon23Mon
24Tue8:445.19:266.52:51-0.42:51-0.76:288:23Full Moon24Tue
25Wed9:445.210:216.43:43-0.63:47-0.76:298:22Waning Gibbous25Wed
26Thu10:435.311:156.24:34-0.64:42-0.56:308:22Waning Gibbous26Thu
27Fri11:405.45:23-0.55:38-0.26:308:21Waning Gibbous27Fri
28Sat12:065.912:365.46:13-0.46:350.16:318:20Waning Gibbous28Sat
29Sun12:585.51:325.47:03-0.27:360.46:328:19Third Quarter29Sun
30Mon1:495.22:265.47:540.08:370.76:328:19Third Quarter30Mon
31Tue2:394.83:185.48:450.19:360.86:338:18Third Quarter31Tue
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 5:45 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 neap phase. Tonight's moon is 58% 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 minimum.

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 (58% illuminated). This places Fort Sumter, SC in a neap tide cycle, so tidal ranges are near their weekly minimum 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