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

TIDE TIMES for Friday, July 17, 2026
The tide is currently falling in St. Marys, St. Marys River, GA.
Next low tide : in 5h 47m at 6:11 am (-0.3 ft)
Next high tide : 12:36 pm (5.9 ft)
Sunset today : 8:29 pm
Sunrise tomorrow : 6:35 am
Moon phase : Waxing Crescent (14% illuminated)
Tide Station Location : Station #8679964
Common Questions About Tides

St. Marys, St. Marys River, GA Tides - Jun 1977

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed9:216.110:057.33:25-0.73:27-1.06:238:24Full Moon1Wed
2Thu10:186.111:017.34:19-0.84:20-1.06:238:24Full Moon2Thu
3Fri11:176.011:577.15:11-0.95:11-0.96:238:25Waning Gibbous3Fri
4Sat12:146.06:02-0.86:04-0.66:238:25Waning Gibbous4Sat
5Sun12:496.91:086.06:53-0.66:58-0.26:228:26Waning Gibbous5Sun
6Mon1:396.62:016.07:46-0.47:540.16:228:26Waning Gibbous6Mon
7Tue2:276.22:525.98:39-0.28:540.46:228:27Third Quarter7Tue
8Wed3:145.93:435.99:32-0.19:530.66:228:27Third Quarter8Wed
9Thu4:025.74:365.910:220.010:490.66:228:28Third Quarter9Thu
10Fri4:525.55:296.011:100.011:420.66:228:28Waning Crescent10Fri
11Sat5:435.46:206.211:56-0.16:228:28Waning Crescent11Sat
12Sun6:335.47:086.312:330.512:42-0.16:228:29Waning Crescent12Sun
13Mon7:205.57:536.41:220.41:26-0.16:228:29Waning Crescent13Mon
14Tue8:065.58:366.52:090.32:10-0.26:228:30Waning Crescent14Tue
15Wed8:505.59:186.52:540.22:53-0.26:228:30New Moon15Wed
16Thu9:335.59:586.53:370.23:33-0.16:228:30New Moon16Thu
17Fri10:165.410:376.44:170.14:13-0.16:238:31New Moon17Fri
18Sat10:585.311:166.34:540.24:510.06:238:31New Moon18Sat
19Sun11:405.211:546.25:310.25:300.06:238:31Waxing Crescent19Sun
20Mon12:215.26:090.26:120.16:238:31Waxing Crescent20Mon
21Tue12:336.11:045.36:490.26:590.36:238:32Waxing Crescent21Tue
22Wed1:156.01:495.47:330.27:540.46:238:32Waxing Crescent22Wed
23Thu2:005.92:395.68:240.18:560.46:248:32First Quarter23Thu
24Fri2:515.83:365.79:20-0.110:020.46:248:32First Quarter24Fri
25Sat3:485.74:416.010:18-0.211:060.36:248:32First Quarter25Sat
26Sun4:525.75:506.311:17-0.56:258:32Waxing Gibbous26Sun
27Mon5:595.76:576.612:090.112:15-0.76:258:32Waxing Gibbous27Mon
28Tue7:045.87:576.91:11-0.21:14-0.86:258:33Waxing Gibbous28Tue
29Wed8:045.98:547.12:10-0.42:12-1.06:268:33Full Moon29Wed
30Thu9:036.09:497.13:07-0.73:08-1.06:268:33Full Moon30Thu
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 9:23 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 spring phase. Tonight's moon is 14% 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 Waxing Crescent (14% 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