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 3h 12m 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 - Nov 2029

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu3:586.94:257.310:311.110:580.87:416:36Waning Crescent1Thu
2Fri5:017.45:267.511:350.711:540.37:426:36Waning Crescent2Fri
3Sat6:017.96:257.712:360.37:436:35Waning Crescent3Sat
4Sun5:578.56:207.912:49-0.112:35-0.16:435:34New Moon4Sun
5Mon6:508.97:137.912:43-0.41:31-0.36:445:33New Moon5Mon
6Tue7:429.18:057.91:36-0.62:25-0.56:455:32New Moon6Tue
7Wed8:359.08:587.72:28-0.73:18-0.46:465:32New Moon7Wed
8Thu9:298.89:537.43:20-0.64:10-0.26:475:31Waxing Crescent8Thu
9Fri10:268.410:517.14:11-0.35:030.16:475:30Waxing Crescent9Fri
10Sat11:258.011:506.95:050.15:590.46:485:30Waxing Crescent10Sat
11Sun12:237.66:040.66:570.76:495:29First Quarter11Sun
12Mon12:496.71:207.27:081.07:570.96:505:29First Quarter12Mon
13Tue1:476.62:176.98:141.28:530.96:515:28First Quarter13Tue
14Wed2:456.63:126.79:161.39:440.96:525:27First Quarter14Wed
15Thu3:406.74:066.510:121.310:300.86:535:27Waxing Gibbous15Thu
16Fri4:326.94:566.511:031.211:130.76:535:26Waxing Gibbous16Fri
17Sat5:207.15:436.511:511.011:550.66:545:26Waxing Gibbous17Sat
18Sun6:037.36:266.512:350.96:555:26Waxing Gibbous18Sun
19Mon6:437.47:066.512:350.51:170.86:565:25Full Moon19Mon
20Tue7:217.57:446.51:150.41:550.76:575:25Full Moon20Tue
21Wed7:567.58:206.41:520.42:320.76:585:24Full Moon21Wed
22Thu8:317.48:546.22:290.43:070.76:595:24Full Moon22Thu
23Fri9:077.39:296.13:050.43:410.86:595:24Waning Gibbous23Fri
24Sat9:447.210:076.03:410.54:170.87:005:24Waning Gibbous24Sat
25Sun10:257.110:496.04:200.64:550.87:015:23Waning Gibbous25Sun
26Mon11:117.011:386.05:030.75:390.87:025:23Waning Gibbous26Mon
27Tue12:016.95:530.86:290.87:035:23Third Quarter27Tue
28Wed12:316.212:556.86:520.97:260.67:045:23Third Quarter28Wed
29Thu1:296.41:536.78:000.88:260.47:045:23Third Quarter29Thu
30Fri2:306.82:546.79:090.69:270.17:055:23Third Quarter30Fri
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