Tides Today & Tomorrow in Charleston, SC

TIDE TIMES for Tuesday, July 21, 2026
The tide is currently rising in Charleston, SC.
Next low tide : 8:59 pm (0.9 ft)
Next high tide : in 1h 32m at 2:48 pm (5.3 ft)
Sunset today : 8:25 pm
Sunrise tomorrow : 6:26 am
Moon phase : First Quarter (52% illuminated)
Tide Station Location : Station #8665530
Common Questions About Tides

Charleston, SC Tides - Apr 1984

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun7:545.28:045.51:440.11:550.16:066:39New Moon1Sun
2Mon8:285.18:355.52:220.12:270.16:056:40New Moon2Mon
3Tue9:004.99:055.62:580.23:000.16:046:41Waxing Crescent3Tue
4Wed9:314.79:375.63:350.33:340.26:036:42Waxing Crescent4Wed
5Thu10:044.610:145.64:140.44:120.26:016:42Waxing Crescent5Thu
6Fri10:444.411:005.54:580.64:560.36:006:43Waxing Crescent6Fri
7Sat11:344.411:565.45:500.75:490.45:596:44First Quarter7Sat
8Sun12:374.36:500.86:530.55:576:44First Quarter8Sun
9Mon1:035.41:484.47:550.78:020.45:566:45First Quarter9Mon
10Tue2:155.43:014.79:000.59:120.25:556:46First Quarter10Tue
11Wed3:285.64:115.110:020.210:20-0.15:546:47Waxing Gibbous11Wed
12Thu4:355.85:145.611:00-0.111:22-0.45:536:47Waxing Gibbous12Thu
13Fri5:345.96:096.011:53-0.55:516:48Waxing Gibbous13Fri
14Sat6:276.07:016.412:20-0.712:43-0.75:506:49Full Moon14Sat
15Sun7:186.07:526.61:15-0.91:31-0.95:496:49Full Moon15Sun
16Mon8:075.88:416.62:08-0.92:18-0.85:486:50Full Moon16Mon
17Tue8:565.69:306.52:59-0.83:03-0.65:466:51Waning Gibbous17Tue
18Wed9:455.310:196.23:49-0.53:49-0.35:456:52Waning Gibbous18Wed
19Thu10:355.011:105.94:40-0.24:350.15:446:52Waning Gibbous19Thu
20Fri11:274.75:310.25:250.55:436:53Waning Gibbous20Fri
21Sat12:035.512:214.56:260.66:200.85:426:54Third Quarter21Sat
22Sun12:585.21:184.47:230.87:211.05:416:54Third Quarter22Sun
23Mon1:545.02:154.48:190.98:231.15:406:55Third Quarter23Mon
24Tue2:494.93:124.59:120.99:221.15:396:56Third Quarter24Tue
25Wed3:444.94:064.710:010.810:181.05:386:57Waning Crescent25Wed
26Thu4:344.94:565.010:450.611:080.85:366:57Waning Crescent26Thu
27Fri5:205.05:405.211:270.511:540.65:356:58Waning Crescent27Fri
28Sat6:035.16:215.512:050.35:346:59Waning Crescent28Sat
29Sun7:425.17:585.712:370.41:410.26:338:00New Moon29Sun
30Mon8:205.08:335.82:180.32:170.16:328:00New Moon30Mon
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 5:53 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 52% 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 (52% 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