Tides Today & Tomorrow in St. Simons Island, GA

TIDE TIMES for Friday, June 19, 2026
The tide is currently falling in St. Simons Island, GA.
Next low tide : in 4h 54m at 7:06 pm (-0.1 ft)
Next high tide (tomorrow) : 1:12 am (7.2 ft)
Sunset today : 8:32 pm
Sunrise tomorrow : 6:21 am
Moon phase : Waxing Crescent (27% illuminated)
Tide Station Location : Station #8677344
Common Questions About Tides

St. Simons Island, GA Tides - Apr 2029

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun10:477.411:158.35:00-1.05:05-1.07:137:45Waning Gibbous1Sun
2Mon11:427.05:52-0.75:55-0.57:127:45Waning Gibbous2Mon
3Tue12:117.912:396.76:47-0.26:500.07:117:46Waning Gibbous3Tue
4Wed1:097.41:376.47:480.37:520.57:097:46Third Quarter4Wed
5Thu2:097.02:376.18:520.69:000.87:087:47Third Quarter5Thu
6Fri3:116.73:396.19:550.710:080.97:077:48Third Quarter6Fri
7Sat4:136.54:406.110:520.711:090.97:067:48Third Quarter7Sat
8Sun5:136.45:386.311:440.67:057:49Waning Crescent8Sun
9Mon6:076.46:296.612:050.812:300.57:037:50Waning Crescent9Mon
10Tue6:546.57:136.912:550.71:130.47:027:50Waning Crescent10Tue
11Wed7:376.67:537.21:410.51:520.37:017:51Waning Crescent11Wed
12Thu8:166.68:297.32:220.42:280.27:007:52New Moon12Thu
13Fri8:536.69:047.43:000.33:030.26:597:52New Moon13Fri
14Sat9:286.59:367.43:360.33:360.26:587:53New Moon14Sat
15Sun10:016.310:087.34:090.44:080.36:567:54New Moon15Sun
16Mon10:346.110:427.24:410.54:410.46:557:54Waxing Crescent16Mon
17Tue11:086.011:197.15:140.65:160.66:547:55Waxing Crescent17Tue
18Wed11:475.95:500.85:550.76:537:56Waxing Crescent18Wed
19Thu12:027.012:315.86:320.96:400.96:527:56Waxing Crescent19Thu
20Fri12:516.91:235.87:221.07:371.06:517:57First Quarter20Fri
21Sat1:466.82:206.08:221.08:441.06:507:58First Quarter21Sat
22Sun2:456.83:236.29:270.89:550.86:497:58First Quarter22Sun
23Mon3:496.84:306.710:300.511:040.56:487:59Waxing Gibbous23Mon
24Tue4:557.05:347.211:290.16:478:00Waxing Gibbous24Tue
25Wed5:587.26:347.812:080.112:26-0.36:468:00Waxing Gibbous25Wed
26Thu6:577.47:298.31:10-0.31:21-0.66:458:01Waxing Gibbous26Thu
27Fri7:527.58:218.72:08-0.72:15-0.96:448:02Full Moon27Fri
28Sat8:447.59:128.83:03-0.93:06-1.06:438:02Full Moon28Sat
29Sun9:367.410:048.63:55-0.93:57-0.96:428:03Full Moon29Sun
30Mon10:307.210:588.34:46-0.84:46-0.76:418:04Waning Gibbous30Mon
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 10:09 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. Simons Island, GA?

St. Simons Island, GA is currently in a transitional phase. Tonight's moon is 27% 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 Waxing Crescent (27% 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