Tides Today & Tomorrow in St. Simons Island, GA

TIDE TIMES for Friday, June 26, 2026
The tide is currently rising in St. Simons Island, GA.
Next low tide : 12:33 pm (0.3 ft)
Next high tide : in 2h 42m at 6:23 am (5.6 ft)
Sunset today : 8:33 pm
Sunrise tomorrow : 6:23 am
Moon phase : Waxing Gibbous (90% illuminated)
Tide Station Location : Station #8677344
Common Questions About Tides

St. Simons Island, GA Tides - Apr 2040

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun11:476.65:58-0.15:58-0.17:137:45Waning Gibbous1Sun
2Mon12:107.512:416.36:520.36:510.27:117:45Waning Gibbous2Mon
3Tue1:087.31:416.17:550.57:550.57:107:46Third Quarter3Tue
4Wed2:127.12:476.09:070.79:110.67:097:47Third Quarter4Wed
5Thu3:226.93:576.110:170.610:260.67:087:47Third Quarter5Thu
6Fri4:366.95:076.411:210.411:360.37:077:48Waning Crescent6Fri
7Sat5:457.16:126.812:200.17:057:49Waning Crescent7Sat
8Sun6:457.37:087.212:380.01:13-0.27:047:49Waning Crescent8Sun
9Mon7:377.47:577.61:36-0.22:02-0.57:037:50Waning Crescent9Mon
10Tue8:237.48:427.92:28-0.42:46-0.67:027:51New Moon10Tue
11Wed9:077.39:237.93:15-0.53:27-0.67:017:51New Moon11Wed
12Thu9:497.110:047.93:58-0.44:05-0.46:597:52New Moon12Thu
13Fri10:306.810:437.64:38-0.24:40-0.16:587:53Waxing Crescent13Fri
14Sat11:116.511:237.45:160.25:150.26:577:53Waxing Crescent14Sat
15Sun11:536.15:530.65:500.66:567:54Waxing Crescent15Sun
16Mon12:047.012:375.86:300.96:281.06:557:55Waxing Crescent16Mon
17Tue12:476.71:225.67:121.37:121.36:547:55First Quarter17Tue
18Wed1:336.42:115.48:001.58:061.56:537:56First Quarter18Wed
19Thu2:236.23:035.48:571.69:081.66:527:57First Quarter19Thu
20Fri3:186.14:005.59:561.510:111.56:507:57First Quarter20Fri
21Sat4:166.14:575.710:501.311:111.36:497:58Waxing Gibbous21Sat
22Sun5:146.35:506.111:411.06:487:59Waxing Gibbous22Sun
23Mon6:076.56:386.612:061.012:280.76:477:59Waxing Gibbous23Mon
24Tue6:546.77:217.112:590.61:140.36:468:00Waxing Gibbous24Tue
25Wed7:396.98:027.61:500.21:580.06:458:01Full Moon25Wed
26Thu8:227.18:447.92:38-0.12:42-0.36:448:01Full Moon26Thu
27Fri9:067.19:278.13:25-0.33:26-0.46:438:02Full Moon27Fri
28Sat9:527.010:148.24:12-0.44:10-0.56:428:03Full Moon28Sat
29Sun10:426.811:058.14:59-0.44:57-0.36:418:03Waning Gibbous29Sun
30Mon11:366.65:50-0.25:47-0.16:408:04Waning Gibbous30Mon
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8677344)

Common Questions About St. Simons Island, GA Tides

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

Slack tide in St. Simons Island, GA is approximately 9:28 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 spring phase. Tonight's moon is 90% 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. 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 Gibbous (90% illuminated). This places St. Simons Island, 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