Tides Today & Tomorrow in Fort Sumter, SC

TIDE TIMES for Thursday, July 16, 2026
The tide is currently rising in Fort Sumter, SC.
Next low tide (tomorrow) : 5:02 am (-0.4 ft)
Next high tide : in 3h 07m at 10:46 pm (6.1 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 - May 2076

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri7:255.57:496.11:14-0.31:27-0.56:318:01New Moon1Fri
2Sat8:125.48:346.22:06-0.42:13-0.66:308:02New Moon2Sat
3Sun8:575.29:176.12:55-0.32:56-0.56:298:03New Moon3Sun
4Mon9:415.09:596.03:41-0.23:37-0.36:288:04New Moon4Mon
5Tue10:244.810:395.84:250.04:180.06:278:04Waxing Crescent5Tue
6Wed11:084.611:205.55:080.24:580.36:268:05Waxing Crescent6Wed
7Thu11:534.45:500.55:390.66:258:06Waxing Crescent7Thu
8Fri12:025.312:414.36:350.76:240.86:248:07Waxing Crescent8Fri
9Sat12:485.01:334.27:220.97:151.06:248:07First Quarter9Sat
10Sun1:384.82:264.28:121.08:121.16:238:08First Quarter10Sun
11Mon2:314.73:204.39:021.09:101.16:228:09First Quarter11Mon
12Tue3:244.74:144.49:510.910:081.06:218:09First Quarter12Tue
13Wed4:184.75:064.710:370.711:050.86:218:10Waxing Gibbous13Wed
14Thu5:104.75:555.011:230.511:580.66:208:11Waxing Gibbous14Thu
15Fri6:004.86:405.312:070.36:198:12Waxing Gibbous15Fri
16Sat6:454.97:225.612:480.312:500.16:198:12Waxing Gibbous16Sat
17Sun7:294.98:035.91:370.11:34-0.16:188:13Full Moon17Sun
18Mon8:134.98:456.12:25-0.12:19-0.36:178:14Full Moon18Mon
19Tue8:594.99:316.13:13-0.23:05-0.46:178:14Full Moon19Tue
20Wed9:484.810:206.14:01-0.33:53-0.46:168:15Waning Gibbous20Wed
21Thu10:414.811:146.04:51-0.34:44-0.36:168:16Waning Gibbous21Thu
22Fri11:394.75:43-0.25:38-0.16:158:16Waning Gibbous22Fri
23Sat12:135.912:414.76:38-0.16:380.16:158:17Waning Gibbous23Sat
24Sun1:155.71:474.87:370.07:450.26:148:18Third Quarter24Sun
25Mon2:185.52:514.98:37-0.18:540.36:148:18Third Quarter25Mon
26Tue3:195.43:545.19:35-0.210:000.26:148:19Third Quarter26Tue
27Wed4:195.34:545.410:30-0.311:040.26:138:20Waning Crescent27Wed
28Thu5:165.25:515.711:22-0.46:138:20Waning Crescent28Thu
29Fri6:105.16:415.912:030.112:12-0.46:128:21Waning Crescent29Fri
30Sat6:595.07:276.012:570.012:59-0.46:128:22Waning Crescent30Sat
31Sun7:454.98:106.01:47-0.11:44-0.46:128:22New Moon31Sun
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8665728)

Common Questions About Fort Sumter, SC Tides

Show All
What time does the tide turn (slack tide) in Fort Sumter, SC today?

Slack tide in Fort Sumter, SC is approximately 1:54 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