Tides Today & Tomorrow in St. Simons Island, GA

TIDE TIMES for Friday, August 7, 2026
The tide is currently falling in St. Simons Island, GA.
Next low tide : in 2h 42m at 10:44 pm (1.0 ft)
Next high tide (tomorrow) : 4:21 am (5.9 ft)
Sunset today : 8:16 pm
Sunrise tomorrow : 6:46 am
Moon phase : Third Quarter (32% illuminated)
Tide Station Location : Station #8677344
Common Questions About Tides

St. Simons Island, GA Tides - Jan 1956

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun10:387.611:126.84:34-1.45:08-1.27:245:33Waning Gibbous1Sun
2Mon11:327.25:28-1.05:59-0.97:245:34Waning Gibbous2Mon
3Tue12:076.712:246.76:26-0.56:51-0.67:245:35Third Quarter3Tue
4Wed1:026.51:176.27:27-0.17:46-0.37:245:36Third Quarter4Wed
5Thu1:576.32:115.98:290.28:41-0.17:245:36Third Quarter5Thu
6Fri2:526.23:065.69:290.39:340.07:245:37Third Quarter6Fri
7Sat3:486.24:025.410:250.410:250.07:255:38Waning Crescent7Sat
8Sun4:436.24:565.411:170.311:140.07:255:39Waning Crescent8Sun
9Mon5:346.35:475.512:050.27:255:39Waning Crescent9Mon
10Tue6:206.46:325.612:01-0.112:500.17:255:40Waning Crescent10Tue
11Wed7:026.57:145.712:45-0.21:32-0.17:255:41New Moon11Wed
12Thu7:406.67:535.81:27-0.32:10-0.27:255:42New Moon12Thu
13Fri8:166.68:295.82:05-0.42:45-0.37:245:43New Moon13Fri
14Sat8:506.59:045.82:42-0.43:18-0.37:245:44New Moon14Sat
15Sun9:236.49:385.83:16-0.33:50-0.37:245:45Waxing Crescent15Sun
16Mon9:566.210:145.93:51-0.34:23-0.37:245:45Waxing Crescent16Mon
17Tue10:336.110:555.94:28-0.14:58-0.37:245:46Waxing Crescent17Tue
18Wed11:145.911:406.05:090.05:39-0.27:245:47Waxing Crescent18Wed
19Thu12:015.85:560.26:26-0.27:235:48First Quarter19Thu
20Fri12:316.212:545.66:550.37:22-0.27:235:49First Quarter20Fri
21Sat1:286.31:545.58:040.48:27-0.37:235:50First Quarter21Sat
22Sun2:316.43:015.59:170.39:34-0.57:225:51First Quarter22Sun
23Mon3:406.64:135.610:280.010:41-0.87:225:52Waxing Gibbous23Mon
24Tue4:497.05:216.011:34-0.411:45-1.17:225:53Waxing Gibbous24Tue
25Wed5:537.36:226.412:35-0.87:215:53Waxing Gibbous25Wed
26Thu6:507.77:186.812:46-1.51:31-1.27:215:54Full Moon26Thu
27Fri7:447.98:117.01:43-1.82:22-1.57:205:55Full Moon27Fri
28Sat8:357.99:037.22:37-1.93:10-1.77:205:56Full Moon28Sat
29Sun9:267.79:557.13:27-1.93:56-1.67:195:57Waning Gibbous29Sun
30Mon10:157.310:467.04:17-1.64:40-1.47:195:58Waning Gibbous30Mon
31Tue11:056.911:376.75:06-1.15:25-1.07:185:59Waning Gibbous31Tue
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8677344)

Common Questions About St. Simons Island, GA Tides

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

Slack tide in St. Simons Island, GA is approximately 1:32 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. Simons Island, GA?

St. Simons Island, GA is currently in a transitional phase. Tonight's moon is 32% 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. Simons Island, 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. Simons Island, GA?

Tide predictions for St. Simons Island, 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. Simons Island, GA?

Tide data for St. Simons Island, GA is sourced from NOAA Station #8677344. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8677344.

What is the moon phase in St. Simons Island, GA tonight?

Tonight the moon over St. Simons Island, GA is Third Quarter (32% illuminated). This places St. Simons Island, 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