Tides Today & Tomorrow in Charleston, SC

TIDE TIMES for Monday, August 17, 2026
The tide is currently falling in Charleston, SC.
Next low tide : in 1h 05m at 6:32 pm (0.7 ft)
Next high tide (tomorrow) : 12:28 am (5.2 ft)
Sunset today : 8:02 pm
Sunrise tomorrow : 6:44 am
Moon phase : Waxing Crescent (27% illuminated)
Tide Station Location : Station #8665530
Common Questions About Tides

Charleston, SC Tides - Oct 1938

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat12:495.01:325.66:531.47:511.66:136:05First Quarter1Sat
2Sun1:425.02:255.57:491.58:431.66:146:04First Quarter2Sun
3Mon2:365.13:175.68:441.59:321.56:146:02Waxing Gibbous3Mon
4Tue3:305.24:085.79:391.410:191.36:156:01Waxing Gibbous4Tue
5Wed4:235.44:565.810:311.211:031.16:166:00Waxing Gibbous5Wed
6Thu5:115.75:395.911:201.011:450.86:165:58Waxing Gibbous6Thu
7Fri5:555.96:205.912:070.86:175:57Full Moon7Fri
8Sat6:356.26:596.012:250.612:520.76:185:56Full Moon8Sat
9Sun7:146.37:375.91:050.41:370.66:195:55Full Moon9Sun
10Mon7:546.58:175.91:460.32:220.56:195:53Full Moon10Mon
11Tue8:366.69:005.72:290.23:080.56:205:52Waning Gibbous11Tue
12Wed9:216.69:485.63:140.23:560.66:215:51Waning Gibbous12Wed
13Thu10:136.510:425.54:010.24:480.86:215:50Waning Gibbous13Thu
14Fri11:106.411:445.44:540.35:450.96:225:48Third Quarter14Fri
15Sat12:146.35:530.56:470.96:235:47Third Quarter15Sat
16Sun12:525.41:216.26:580.67:510.96:245:46Third Quarter16Sun
17Mon2:005.52:266.28:050.68:530.76:245:45Third Quarter17Mon
18Tue3:055.83:296.29:110.59:510.56:255:44Waning Crescent18Tue
19Wed4:096.04:286.210:140.410:460.36:265:43Waning Crescent19Wed
20Thu5:066.35:226.311:120.211:360.16:275:41Waning Crescent20Thu
21Fri5:596.66:116.212:070.16:285:40New Moon21Fri
22Sat6:476.76:576.112:240.012:580.16:285:39New Moon22Sat
23Sun7:326.87:416.01:100.01:470.16:295:38New Moon23Sun
24Mon8:176.78:245.81:530.12:330.36:305:37New Moon24Mon
25Tue9:006.59:065.62:350.33:170.56:315:36Waxing Crescent25Tue
26Wed9:426.39:495.43:150.53:590.76:325:35Waxing Crescent26Wed
27Thu10:246.010:325.23:540.84:421.06:325:34Waxing Crescent27Thu
28Fri11:085.811:195.04:341.05:261.26:335:33Waxing Crescent28Fri
29Sat11:545.65:171.36:131.46:345:32First Quarter29Sat
30Sun12:094.912:445.46:061.47:021.56:355:31First Quarter30Sun
31Mon1:014.91:355.37:011.57:521.56:365:30First Quarter31Mon
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 9:30 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 transitional phase. Tonight's moon is 27% 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 shifting between spring and neap.

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 Waxing Crescent (27% illuminated). This places Charleston, SC in a transitional tide cycle, so tidal ranges are shifting between spring and neap 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