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

TIDE TIMES for Saturday, July 18, 2026
The tide is currently falling in St. Marys, St. Marys River, GA.
Next low tide : in 1h 23m at 7:19 pm (0.2 ft)
Next high tide (tomorrow) : 1:36 am (6.0 ft)
Sunset today : 8:29 pm
Sunrise tomorrow : 6:35 am
Moon phase : Waxing Crescent (23% illuminated)
Tide Station Location : Station #8679964
Common Questions About Tides

St. Marys, St. Marys River, GA Tides - Sep 1975

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon5:265.66:096.611:370.37:027:50Waning Crescent1Mon
2Tue6:306.07:066.912:250.712:360.07:027:49Waning Crescent2Tue
3Wed7:286.47:587.21:190.31:34-0.37:037:47Waning Crescent3Wed
4Thu8:216.88:487.32:12-0.12:31-0.67:047:46New Moon4Thu
5Fri9:147.19:387.33:02-0.43:26-0.77:047:45New Moon5Fri
6Sat10:087.210:297.23:51-0.64:19-0.77:057:44New Moon6Sat
7Sun11:047.311:226.94:39-0.65:12-0.57:057:42Waxing Crescent7Sun
8Mon12:027.25:27-0.56:05-0.27:067:41Waxing Crescent8Mon
9Tue12:166.612:597.16:16-0.27:010.27:067:40Waxing Crescent9Tue
10Wed1:096.41:557.07:080.18:000.67:077:39Waxing Crescent10Wed
11Thu2:036.12:516.88:040.49:020.87:077:37First Quarter11Thu
12Fri2:585.93:486.69:040.710:030.97:087:36First Quarter12Fri
13Sat3:545.84:456.510:050.810:590.97:097:35First Quarter13Sat
14Sun4:515.95:406.511:020.811:510.87:097:34Waxing Gibbous14Sun
15Mon5:476.06:306.511:550.87:107:32Waxing Gibbous15Mon
16Tue6:386.37:146.612:380.712:450.77:107:31Waxing Gibbous16Tue
17Wed7:256.57:556.71:230.61:320.67:117:30Waxing Gibbous17Wed
18Thu8:086.78:336.72:050.52:170.67:117:28Full Moon18Thu
19Fri8:496.89:106.62:450.43:000.67:127:27Full Moon19Fri
20Sat9:296.89:476.53:230.43:400.67:137:26Full Moon20Sat
21Sun10:086.710:246.33:580.54:190.77:137:25Full Moon21Sun
22Mon10:466.611:016.14:330.64:570.97:147:23Waning Gibbous22Mon
23Tue11:256.511:395.95:060.75:351.17:147:22Waning Gibbous23Tue
24Wed12:056.45:400.86:161.37:157:21Waning Gibbous24Wed
25Thu12:205.712:486.46:190.97:031.57:157:20Waning Gibbous25Thu
26Fri1:055.61:356.37:041.07:581.67:167:18Third Quarter26Fri
27Sat1:555.62:296.48:001.09:001.67:177:17Third Quarter27Sat
28Sun2:525.63:296.59:061.010:031.47:177:16Third Quarter28Sun
29Mon3:565.84:346.610:130.811:021.17:187:14Third Quarter29Mon
30Tue5:056.15:396.811:170.511:580.77:187:13Waning Crescent30Tue
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 10:27 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 transitional phase. Tonight's moon is 23% 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 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 Waxing Crescent (23% illuminated). This places St. Marys, St. Marys River, GA 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