Tides Today & Tomorrow in St. Simons Island, GA

TIDE TIMES for Friday, June 19, 2026
The tide is currently rising in St. Simons Island, GA.
Next low tide (tomorrow) : 7:44 am (-0.2 ft)
Next high tide (tomorrow) : in 4h 20m at 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 - Oct 2029

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon2:296.22:587.18:481.79:361.97:197:10Third Quarter1Mon
2Tue3:276.33:587.39:531.510:371.67:207:09Third Quarter2Tue
3Wed4:306.74:597.510:561.211:331.27:207:08Waning Crescent3Wed
4Thu5:317.25:577.811:570.87:217:06Waning Crescent4Thu
5Fri6:277.86:528.112:270.712:560.47:227:05Waning Crescent5Fri
6Sat7:208.47:438.41:190.21:530.17:227:04New Moon6Sat
7Sun8:108.88:338.42:09-0.22:47-0.27:237:03New Moon7Sun
8Mon9:009.19:238.32:59-0.43:40-0.37:237:01New Moon8Mon
9Tue9:519.110:158.13:48-0.54:32-0.27:247:00Waxing Crescent9Tue
10Wed10:459.011:107.84:37-0.45:240.17:256:59Waxing Crescent10Wed
11Thu11:438.75:28-0.16:200.47:256:58Waxing Crescent11Thu
12Fri12:087.512:438.36:230.37:200.87:266:57Waxing Crescent12Fri
13Sat1:097.21:457.97:240.88:241.17:276:56First Quarter13Sat
14Sun2:106.92:477.68:321.19:291.27:286:54First Quarter14Sun
15Mon3:126.93:497.49:401.310:281.27:286:53First Quarter15Mon
16Tue4:146.94:487.310:431.311:211.17:296:52Waxing Gibbous16Tue
17Wed5:137.05:437.311:401.37:306:51Waxing Gibbous17Wed
18Thu6:057.36:327.312:091.012:321.27:306:50Waxing Gibbous18Thu
19Fri6:527.57:167.312:530.81:201.17:316:49Waxing Gibbous19Fri
20Sat7:347.77:567.31:340.82:041.07:326:48Full Moon20Sat
21Sun8:127.98:347.22:120.72:441.07:326:47Full Moon21Sun
22Mon8:487.99:117.12:480.73:211.07:336:46Full Moon22Mon
23Tue9:237.89:466.93:220.73:551.17:346:45Full Moon23Tue
24Wed9:577.710:216.63:550.84:281.27:356:44Waning Gibbous24Wed
25Thu10:327.510:556.44:291.05:011.37:356:43Waning Gibbous25Thu
26Fri11:097.411:336.35:031.15:361.57:366:42Waning Gibbous26Fri
27Sat11:507.35:401.36:161.67:376:41Waning Gibbous27Sat
28Sun12:156.212:367.26:231.47:031.77:386:40Third Quarter28Sun
29Mon1:036.21:287.17:151.57:581.77:396:39Third Quarter29Mon
30Tue1:576.32:237.18:171.59:001.57:396:38Third Quarter30Tue
31Wed2:566.53:237.29:241.410:001.27:406:37Third Quarter31Wed
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 4:28 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 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