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

TIDE TIMES for Wednesday, August 19, 2026
The tide is currently falling in St. Marys, St. Marys River, GA.
Next low tide : in 2h 42m at 9:29 pm (1.3 ft)
Next high tide (tomorrow) : 3:08 am (5.3 ft)
Sunset today : 8:04 pm
Sunrise tomorrow : 6:55 am
Moon phase : First Quarter (46% illuminated)
Tide Station Location : Station #8679964
Common Questions About Tides

St. Marys, St. Marys River, GA Tides - Jan 1929

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue1:215.71:356.07:210.37:530.37:235:35Third Quarter1Tue
2Wed2:105.72:185.78:180.68:410.37:245:36Third Quarter2Wed
3Thu3:005.63:045.49:140.89:290.47:245:37Third Quarter3Thu
4Fri3:535.63:545.310:090.810:160.47:245:38Third Quarter4Fri
5Sat4:485.74:485.211:020.811:020.37:245:38Waning Crescent5Sat
6Sun5:425.85:415.211:540.711:490.27:245:39Waning Crescent6Sun
7Mon6:326.06:315.312:440.67:245:40Waning Crescent7Mon
8Tue7:196.17:195.312:360.21:330.57:245:41Waning Crescent8Tue
9Wed8:036.28:045.31:210.12:180.47:245:42New Moon9Wed
10Thu8:456.38:485.32:040.02:590.37:245:42New Moon10Thu
11Fri9:256.39:305.32:45-0.13:380.27:245:43New Moon11Fri
12Sat10:036.210:105.33:24-0.24:140.27:245:44New Moon12Sat
13Sun10:396.210:495.34:03-0.24:500.27:245:45Waxing Crescent13Sun
14Mon11:146.111:295.44:42-0.25:270.27:245:46Waxing Crescent14Mon
15Tue11:506.05:25-0.16:070.17:245:47Waxing Crescent15Tue
16Wed12:115.512:315.96:140.06:520.17:245:47Waxing Crescent16Wed
17Thu12:575.61:165.77:110.37:450.17:245:48First Quarter17Thu
18Fri1:505.72:095.48:170.58:430.07:235:49First Quarter18Fri
19Sat2:535.83:125.29:280.69:45-0.17:235:50First Quarter19Sat
20Sun4:085.94:265.010:370.510:48-0.37:235:51Waxing Gibbous20Sun
21Mon5:276.15:435.111:450.411:51-0.57:235:52Waxing Gibbous21Mon
22Tue6:366.46:505.212:490.17:225:53Waxing Gibbous22Tue
23Wed7:376.77:515.512:52-0.71:49-0.27:225:54Full Moon23Wed
24Thu8:336.98:475.71:51-0.92:43-0.47:215:54Full Moon24Thu
25Fri9:246.99:405.92:46-1.03:32-0.67:215:55Full Moon25Fri
26Sat10:126.810:315.93:37-1.04:17-0.67:215:56Full Moon26Sat
27Sun10:576.611:186.04:25-0.94:59-0.57:205:57Waning Gibbous27Sun
28Mon11:376.35:12-0.65:40-0.37:205:58Waning Gibbous28Mon
29Tue12:025.912:166.05:58-0.26:21-0.17:195:59Waning Gibbous29Tue
30Wed12:445.812:535.76:460.17:030.17:186:00Third Quarter30Wed
31Thu1:265.71:325.47:370.57:480.37:186:01Third Quarter31Thu
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8679964)

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

Show All
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 12:18 am — 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 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 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 (46% 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