Tides Today & Tomorrow in Charleston, SC

TIDE TIMES for Monday, July 20, 2026
The tide is currently falling in Charleston, SC.
Next low tide : in 4h 32m at 8:01 pm (0.7 ft)
Next high tide (tomorrow) : 1:55 am (4.9 ft)
Sunset today : 8:26 pm
Sunrise tomorrow : 6:25 am
Moon phase : First Quarter (42% illuminated)
Tide Station Location : Station #8665530
Common Questions About Tides

Charleston, SC Tides - Jul 1984

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun10:304.810:486.24:31-0.24:29-0.46:158:31Waxing Crescent1Sun
2Mon11:264.911:416.05:19-0.35:23-0.36:158:31Waxing Crescent2Mon
3Tue12:245.06:09-0.36:20-0.16:168:31Waxing Crescent3Tue
4Wed12:365.81:255.27:02-0.37:230.06:168:31First Quarter4Wed
5Thu1:325.62:255.47:57-0.38:280.26:178:31First Quarter5Thu
6Fri2:295.43:245.68:52-0.39:320.26:178:31First Quarter6Fri
7Sat3:265.14:235.89:46-0.310:350.26:188:31Waxing Gibbous7Sat
8Sun4:244.95:216.010:41-0.311:360.26:188:30Waxing Gibbous8Sun
9Mon5:224.86:166.111:35-0.36:198:30Waxing Gibbous9Mon
10Tue6:184.77:076.112:320.112:28-0.36:198:30Waxing Gibbous10Tue
11Wed7:104.77:546.11:250.01:18-0.26:208:30Full Moon11Wed
12Thu7:594.78:396.02:140.02:06-0.16:208:29Full Moon12Thu
13Fri8:464.79:235.93:010.12:520.06:218:29Full Moon13Fri
14Sat9:324.710:055.73:440.13:360.26:228:29Full Moon14Sat
15Sun10:174.610:455.54:250.24:180.46:228:28Waning Gibbous15Sun
16Mon11:014.611:245.35:040.34:580.66:238:28Waning Gibbous16Mon
17Tue11:444.65:410.55:390.86:238:27Waning Gibbous17Tue
18Wed12:035.112:284.66:180.56:231.06:248:27Waning Gibbous18Wed
19Thu12:434.91:124.66:560.67:121.26:258:26Third Quarter19Thu
20Fri1:254.71:584.87:370.68:071.36:258:26Third Quarter20Fri
21Sat2:104.52:454.98:210.69:041.36:268:25Third Quarter21Sat
22Sun2:574.43:355.19:080.510:021.26:278:25Third Quarter22Sun
23Mon3:494.44:275.39:580.411:001.16:278:24Waning Crescent23Mon
24Tue4:464.45:235.610:510.311:570.86:288:23Waning Crescent24Tue
25Wed5:444.46:175.911:470.16:298:23Waning Crescent25Wed
26Thu6:394.67:096.112:510.612:42-0.16:298:22Waning Crescent26Thu
27Fri7:324.88:006.41:420.31:36-0.46:308:21New Moon27Fri
28Sat8:255.08:516.52:320.02:30-0.56:318:21New Moon28Sat
29Sun9:195.29:426.53:21-0.23:23-0.66:318:20New Moon29Sun
30Mon10:155.410:346.44:09-0.44:17-0.66:328:19Waxing Crescent30Mon
31Tue11:115.511:266.24:57-0.55:12-0.46:338:18Waxing Crescent31Tue
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8665530)

Common Questions About Charleston, SC Tides

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What time does the tide turn (slack tide) in Charleston, SC today?

Slack tide in Charleston, SC is approximately 10:58 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 Charleston, SC?

Charleston, SC is currently in a neap phase. Tonight's moon is 42% 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 Charleston, 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 Charleston, SC?

Tide predictions for Charleston, 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 Charleston, SC?

Tide data for Charleston, SC is sourced from NOAA Station #8665530. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8665530.

What is the moon phase in Charleston, SC tonight?

Tonight the moon over Charleston, SC is First Quarter (42% illuminated). This places Charleston, 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