Tides Today & Tomorrow in St. Simons Island, GA

TIDE TIMES for Saturday, June 20, 2026
The tide is currently falling in St. Simons Island, GA.
Next low tide : in 2h 25m at 8:07 pm (0.3 ft)
Next high tide (tomorrow) : 2:04 am (6.8 ft)
Sunset today : 8:32 pm
Sunrise tomorrow : 6:22 am
Moon phase : First Quarter (37% illuminated)
Tide Station Location : Station #8677344
Common Questions About Tides

St. Simons Island, GA Tides - Apr 2031

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue3:426.04:225.610:171.410:371.27:147:44First Quarter1Tue
2Wed4:406.15:195.911:101.211:341.07:127:45Waxing Gibbous2Wed
3Thu5:366.26:106.212:000.97:117:46Waxing Gibbous3Thu
4Fri6:276.56:566.712:270.712:470.57:107:46Waxing Gibbous4Fri
5Sat7:136.77:377.11:180.31:320.27:097:47Waxing Gibbous5Sat
6Sun7:557.08:177.52:060.02:15-0.17:087:47Full Moon6Sun
7Mon8:377.18:577.82:52-0.32:58-0.47:067:48Full Moon7Mon
8Tue9:207.29:408.03:37-0.53:41-0.57:057:49Full Moon8Tue
9Wed10:047.110:268.04:22-0.54:24-0.67:047:49Waning Gibbous9Wed
10Thu10:537.011:167.95:08-0.45:10-0.57:037:50Waning Gibbous10Thu
11Fri11:466.85:58-0.26:00-0.27:027:51Waning Gibbous11Fri
12Sat12:127.712:436.76:530.06:570.17:007:51Waning Gibbous12Sat
13Sun1:127.51:456.67:560.38:040.46:597:52Third Quarter13Sun
14Mon2:157.22:496.69:020.39:170.56:587:53Third Quarter14Mon
15Tue3:227.03:556.710:080.310:280.46:577:53Third Quarter15Tue
16Wed4:297.05:016.911:080.111:330.36:567:54Waning Crescent16Wed
17Thu5:337.06:027.312:04-0.16:557:55Waning Crescent17Thu
18Fri6:317.16:567.612:330.112:56-0.36:547:55Waning Crescent18Fri
19Sat7:237.27:447.91:29-0.11:44-0.56:527:56Waning Crescent19Sat
20Sun8:097.28:288.02:19-0.32:29-0.56:517:57New Moon20Sun
21Mon8:537.19:098.03:06-0.33:11-0.46:507:57New Moon21Mon
22Tue9:356.99:487.83:48-0.23:49-0.26:497:58New Moon22Tue
23Wed10:166.710:287.64:260.04:260.06:487:59Waxing Crescent23Wed
24Thu10:576.411:077.35:020.35:010.36:477:59Waxing Crescent24Thu
25Fri11:396.111:487.05:370.65:360.66:468:00Waxing Crescent25Fri
26Sat12:225.96:130.96:140.96:458:01Waxing Crescent26Sat
27Sun12:306.71:065.86:511.16:581.26:448:01Waxing Crescent27Sun
28Mon1:156.51:525.77:361.37:501.46:438:02First Quarter28Mon
29Tue2:026.32:415.78:271.38:491.56:428:03First Quarter29Tue
30Wed2:536.23:345.89:221.29:511.46:418:03First Quarter30Wed
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 11:05 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 37% 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 First Quarter (37% 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