Tides Today & Tomorrow in St. Marys, St. Marys River, GA

TIDE TIMES for Sunday, June 21, 2026
The tide is currently rising in St. Marys, St. Marys River, GA.
Next low tide : 9:42 pm (0.5 ft)
Next high tide : in 1h 44m at 3:35 pm (5.9 ft)
Sunset today : 8:32 pm
Sunrise tomorrow : 6:23 am
Moon phase : First Quarter (48% illuminated)
Tide Station Location : Station #8679964
Common Questions About Tides

St. Marys, St. Marys River, GA Tides - Apr 2011

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri8:345.98:516.42:190.32:390.17:157:45New Moon1Fri
2Sat9:135.99:316.53:030.23:180.07:137:45New Moon2Sat
3Sun9:515.910:096.53:430.13:530.07:127:46New Moon3Sun
4Mon10:285.810:466.54:210.04:270.07:117:46New Moon4Mon
5Tue11:045.711:216.44:580.15:000.07:107:47Waxing Crescent5Tue
6Wed11:405.511:566.35:340.25:330.17:097:48Waxing Crescent6Wed
7Thu12:165.46:120.46:090.27:077:48Waxing Crescent7Thu
8Fri12:336.212:555.36:530.66:500.37:067:49Waxing Crescent8Fri
9Sat1:146.21:395.37:400.77:410.47:057:50First Quarter9Sat
10Sun2:026.12:305.38:360.88:430.57:047:50First Quarter10Sun
11Mon2:576.03:315.39:380.89:530.57:037:51First Quarter11Mon
12Tue4:025.94:425.510:410.611:030.37:027:51First Quarter12Tue
13Wed5:145.95:565.911:410.37:007:52Waxing Gibbous13Wed
14Thu6:246.17:036.312:090.112:380.06:597:53Waxing Gibbous14Thu
15Fri7:266.28:026.81:12-0.21:34-0.46:587:53Waxing Gibbous15Fri
16Sat8:216.48:577.22:12-0.52:27-0.66:577:54Full Moon16Sat
17Sun9:136.49:507.43:09-0.73:19-0.86:567:55Full Moon17Sun
18Mon10:056.310:437.44:03-0.84:08-0.96:557:55Full Moon18Mon
19Tue10:566.211:357.34:54-0.84:55-0.76:547:56Full Moon19Tue
20Wed11:486.05:44-0.65:42-0.56:537:57Waning Gibbous20Wed
21Thu12:267.012:385.86:34-0.36:30-0.16:527:57Waning Gibbous21Thu
22Fri1:156.71:285.77:250.17:200.36:507:58Waning Gibbous22Fri
23Sat2:036.32:185.58:180.48:160.76:497:59Third Quarter23Sat
24Sun2:506.03:095.59:130.69:150.96:487:59Third Quarter24Sun
25Mon3:405.74:035.510:060.710:151.16:478:00Third Quarter25Mon
26Tue4:335.54:595.610:570.611:121.06:468:01Third Quarter26Tue
27Wed5:285.45:555.811:450.56:458:01Waning Crescent27Wed
28Thu6:205.56:486.012:060.912:310.46:448:02Waning Crescent28Thu
29Fri7:095.67:356.312:580.71:150.36:448:03Waning Crescent29Fri
30Sat7:555.78:206.51:460.61:580.26:438:03Waning Crescent30Sat
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8679964)

Common Questions About St. Marys, St. Marys River, GA Tides

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What time does the tide turn (slack tide) in St. Marys, St. Marys River, GA today?

Slack tide in St. Marys, St. Marys River, GA is approximately 6:38 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 St. Marys, St. Marys River, GA?

St. Marys, St. Marys River, GA is currently in a neap phase. Tonight's moon is 48% 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 St. Marys, St. Marys River, GA 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 St. Marys, St. Marys River, GA?

Tide predictions for St. Marys, St. Marys River, GA 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 St. Marys, St. Marys River, GA?

Tide data for St. Marys, St. Marys River, GA is sourced from NOAA Station #8679964. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8679964.

What is the moon phase in St. Marys, St. Marys River, GA tonight?

Tonight the moon over St. Marys, St. Marys River, GA is First Quarter (48% illuminated). This places St. Marys, St. Marys River, GA 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