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 1h 01m 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 - May 1934

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue9:495.010:236.34:07-0.23:58-0.36:328:00Waning Gibbous1Tue
2Wed10:424.911:176.24:56-0.24:48-0.26:318:01Waning Gibbous2Wed
3Thu11:394.85:480.05:430.06:308:02Waning Gibbous3Thu
4Fri12:166.012:424.86:450.16:440.26:298:03Third Quarter4Fri
5Sat1:205.81:494.97:450.27:520.36:288:03Third Quarter5Sat
6Sun2:245.62:555.08:450.19:010.46:288:04Third Quarter6Sun
7Mon3:265.53:595.39:430.010:090.36:278:05Third Quarter7Mon
8Tue4:265.44:595.610:38-0.111:120.26:268:05Waning Crescent8Tue
9Wed5:235.35:555.911:30-0.26:258:06Waning Crescent9Wed
10Thu6:155.26:456.112:100.112:19-0.36:248:07Waning Crescent10Thu
11Fri7:035.27:306.21:040.01:05-0.36:238:08New Moon11Fri
12Sat7:475.18:126.21:530.01:49-0.36:238:08New Moon12Sat
13Sun8:304.98:526.22:400.02:31-0.26:228:09New Moon13Sun
14Mon9:134.89:316.03:240.13:110.06:218:10New Moon14Mon
15Tue9:554.710:105.84:050.23:510.26:208:11Waxing Crescent15Tue
16Wed10:384.510:495.64:450.44:300.46:208:11Waxing Crescent16Wed
17Thu11:214.411:295.35:230.65:090.66:198:12Waxing Crescent17Thu
18Fri12:064.36:020.85:510.86:188:13Waxing Crescent18Fri
19Sat12:115.112:544.36:430.96:391.06:188:13First Quarter19Sat
20Sun12:575.01:454.37:281.07:331.16:178:14First Quarter20Sun
21Mon1:454.92:374.48:141.08:321.16:178:15First Quarter21Mon
22Tue2:354.83:284.69:010.89:311.16:168:15First Quarter22Tue
23Wed3:264.74:204.99:490.710:310.96:158:16Waxing Gibbous23Wed
24Thu4:194.75:125.310:370.411:290.76:158:17Waxing Gibbous24Thu
25Fri5:144.76:035.611:270.26:158:17Waxing Gibbous25Fri
26Sat6:084.86:516.012:240.412:17-0.16:148:18Waxing Gibbous26Sat
27Sun6:594.87:396.31:170.11:08-0.36:148:19Full Moon27Sun
28Mon7:504.98:296.42:09-0.11:59-0.46:138:19Full Moon28Mon
29Tue8:424.99:216.53:01-0.32:51-0.56:138:20Full Moon29Tue
30Wed9:385.010:166.53:52-0.43:44-0.56:138:21Waning Gibbous30Wed
31Thu10:365.011:136.34:43-0.44:39-0.46:128:21Waning Gibbous31Thu
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