Tides Today & Tomorrow in Charleston, SC

TIDE TIMES for Wednesday, August 19, 2026
The tide is currently falling in Charleston, SC.
Next low tide : in 6h 12m at 8:21 pm (1.3 ft)
Next high tide (tomorrow) : 2:03 am (4.7 ft)
Sunset today : 8:00 pm
Sunrise tomorrow : 6:46 am
Moon phase : First Quarter (46% illuminated)
Tide Station Location : Station #8665530
Common Questions About Tides

Charleston, SC Tides - Oct 1934

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon1:484.92:165.57:471.48:491.86:136:05Third Quarter1Mon
2Tue2:434.93:105.68:441.49:391.76:146:04Waning Crescent2Tue
3Wed3:385.04:015.69:391.310:251.56:146:02Waning Crescent3Wed
4Thu4:305.24:495.710:301.211:071.36:156:01Waning Crescent4Thu
5Fri5:185.55:325.811:191.111:461.16:166:00Waning Crescent5Fri
6Sat6:015.76:115.912:050.96:165:58New Moon6Sat
7Sun6:405.96:485.812:220.912:480.86:175:57New Moon7Sun
8Mon7:176.17:245.812:580.81:310.76:185:56New Moon8Mon
9Tue7:536.28:005.71:340.62:140.76:195:55New Moon9Tue
10Wed8:296.38:375.52:120.62:570.86:195:53Waxing Crescent10Wed
11Thu9:086.39:195.42:520.53:420.96:205:52Waxing Crescent11Thu
12Fri9:536.310:065.33:350.54:311.06:215:51Waxing Crescent12Fri
13Sat10:476.211:015.24:230.65:251.16:215:50Waxing Crescent13Sat
14Sun11:506.15:180.76:251.26:225:48First Quarter14Sun
15Mon12:075.112:596.16:220.87:291.16:235:47First Quarter15Mon
16Tue1:185.22:076.17:320.88:311.06:245:46First Quarter16Tue
17Wed2:285.43:126.28:420.89:300.76:245:45Waxing Gibbous17Wed
18Thu3:355.74:136.39:490.610:260.46:255:44Waxing Gibbous18Thu
19Fri4:386.15:096.310:510.411:180.16:265:43Waxing Gibbous19Fri
20Sat5:346.55:596.311:490.26:275:41Waxing Gibbous20Sat
21Sun6:246.86:476.212:07-0.112:430.16:285:40Full Moon21Sun
22Mon7:126.97:336.012:54-0.11:340.26:285:39Full Moon22Mon
23Tue7:586.98:185.81:39-0.12:230.36:295:38Full Moon23Tue
24Wed8:436.79:045.62:230.13:090.56:305:37Waning Gibbous24Wed
25Thu9:276.59:495.33:060.33:550.86:315:36Waning Gibbous25Thu
26Fri10:126.210:355.13:480.64:401.16:325:35Waning Gibbous26Fri
27Sat10:575.911:244.94:310.95:261.46:325:34Waning Gibbous27Sat
28Sun11:465.75:171.26:161.66:335:33Third Quarter28Sun
29Mon12:164.812:375.56:081.47:081.76:345:32Third Quarter29Mon
30Tue1:114.81:295.47:051.57:591.76:355:31Third Quarter30Tue
31Wed2:054.82:205.38:021.58:471.66:365:30Third Quarter31Wed
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8665530)

Common Questions About Charleston, SC Tides

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

Slack tide in Charleston, SC is approximately 11:12 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 46% 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 (46% 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