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

TIDE TIMES for Wednesday, August 12, 2026
The tide is currently rising in St. Marys, St. Marys River, GA.
Next low tide : 3:34 pm (-0.6 ft)
Next high tide : in 1h 29m at 9:31 am (6.2 ft)
Sunset today : 8:11 pm
Sunrise tomorrow : 6:50 am
Moon phase : New Moon (0% illuminated)
Tide Station Location : Station #8679964
Common Questions About Tides

St. Marys, St. Marys River, GA Tides - Dec 1940

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun10:397.210:486.13:57-0.34:450.07:065:24Waxing Crescent1Sun
2Mon11:276.911:386.04:430.05:320.27:075:24Waxing Crescent2Mon
3Tue12:126.65:310.36:200.47:075:24Waxing Crescent3Tue
4Wed12:265.912:546.36:200.77:090.67:085:24First Quarter4Wed
5Thu1:135.81:376.07:131.07:580.77:095:24First Quarter5Thu
6Fri2:015.82:215.98:081.28:480.77:105:24First Quarter6Fri
7Sat2:525.83:105.79:051.29:360.77:105:24First Quarter7Sat
8Sun3:465.94:035.79:591.210:230.67:115:24First Quarter8Sun
9Mon4:416.04:575.710:521.111:100.47:125:25Waxing Gibbous9Mon
10Tue5:356.25:495.711:430.911:550.37:135:25Waxing Gibbous10Tue
11Wed6:256.46:385.812:330.87:135:25Waxing Gibbous11Wed
12Thu7:116.57:245.812:410.21:210.67:145:25Waxing Gibbous12Thu
13Fri7:556.78:075.81:250.12:070.57:155:26Full Moon13Fri
14Sat8:376.78:495.72:08-0.12:500.37:155:26Full Moon14Sat
15Sun9:186.79:315.72:50-0.23:320.37:165:26Full Moon15Sun
16Mon9:586.710:155.73:31-0.34:120.27:165:27Full Moon16Mon
17Tue10:406.711:005.74:14-0.34:540.17:175:27Waning Gibbous17Tue
18Wed11:236.711:485.84:59-0.25:380.17:185:27Waning Gibbous18Wed
19Thu12:096.65:49-0.16:270.17:185:28Waning Gibbous19Thu
20Fri12:395.912:586.56:460.07:210.07:195:28Third Quarter20Fri
21Sat1:346.01:526.37:490.28:19-0.17:195:29Third Quarter21Sat
22Sun2:356.12:516.18:550.29:18-0.27:205:29Third Quarter22Sun
23Mon3:436.23:566.010:010.210:17-0.37:205:30Third Quarter23Mon
24Tue4:546.45:035.911:040.111:16-0.57:215:30Waning Crescent24Tue
25Wed6:006.76:065.912:05-0.17:215:31Waning Crescent25Wed
26Thu6:596.97:036.012:13-0.61:04-0.27:225:31Waning Crescent26Thu
27Fri7:537.07:566.01:09-0.71:59-0.47:225:32New Moon27Fri
28Sat8:437.08:476.02:02-0.72:50-0.57:225:33New Moon28Sat
29Sun9:316.99:366.02:51-0.73:37-0.47:235:33New Moon29Sun
30Mon10:166.710:235.93:38-0.64:21-0.37:235:34Waxing Crescent30Mon
31Tue10:586.54:22-0.35:03-0.27:235:35Waxing Crescent31Tue
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 12:32 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 spring phase. Tonight's moon is 0% 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 maximum.

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 New Moon (0% illuminated). This places St. Marys, St. Marys River, GA in a spring tide cycle, so tidal ranges are near their weekly maximum 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