Tides Today & Tomorrow in St. Simons Island, GA

TIDE TIMES for Sunday, June 28, 2026
The tide is currently falling in St. Simons Island, GA.
Next low tide : in 3h 22m at 2:00 pm (0.3 ft)
Next high tide : 8:20 pm (7.0 ft)
Sunset today : 8:33 pm
Sunrise tomorrow : 6:24 am
Moon phase : Full Moon (98% illuminated)
Tide Station Location : Station #8677344
Common Questions About Tides

St. Simons Island, GA Tides - Mar 2042

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat4:006.24:355.410:500.610:530.36:516:23Waxing Gibbous1Sat
2Sun5:036.35:345.611:450.511:490.26:506:24Waxing Gibbous2Sun
3Mon5:586.46:245.812:340.46:496:25Waxing Gibbous3Mon
4Tue6:446.67:086.112:400.01:170.26:486:26Waxing Gibbous4Tue
5Wed7:256.77:476.31:25-0.11:550.16:476:26Full Moon5Wed
6Thu8:026.78:246.42:05-0.22:280.06:456:27Full Moon6Thu
7Fri8:386.78:586.52:42-0.22:570.06:446:28Full Moon7Fri
8Sat9:126.59:306.53:16-0.13:250.06:436:29Full Moon8Sat
9Sun10:456.311:006.44:490.14:520.17:427:29Waning Gibbous9Sun
10Mon11:186.011:326.45:220.35:210.27:417:30Waning Gibbous10Mon
11Tue11:535.85:550.55:530.47:397:31Waning Gibbous11Tue
12Wed12:076.312:325.66:340.86:310.67:387:31Waning Gibbous12Wed
13Thu12:486.31:165.47:201.07:170.77:377:32Third Quarter13Thu
14Fri1:376.22:085.38:181.28:150.87:367:33Third Quarter14Fri
15Sat2:346.23:085.39:271.29:250.87:347:33Third Quarter15Sat
16Sun3:426.34:165.510:371.010:380.67:337:34Third Quarter16Sun
17Mon4:556.55:255.911:420.611:480.27:327:35Waning Crescent17Mon
18Tue6:036.96:286.512:410.27:317:35Waning Crescent18Tue
19Wed7:027.47:247.112:52-0.31:35-0.47:297:36Waning Crescent19Wed
20Thu7:567.78:167.71:51-0.82:26-0.97:287:37New Moon20Thu
21Fri8:467.99:068.22:47-1.13:13-1.27:277:37New Moon21Fri
22Sat9:357.89:558.43:39-1.33:59-1.47:267:38New Moon22Sat
23Sun10:247.610:468.34:30-1.24:45-1.37:247:39Waxing Crescent23Sun
24Mon11:157.211:378.15:20-0.95:31-1.07:237:39Waxing Crescent24Mon
25Tue12:096.86:12-0.56:20-0.57:227:40Waxing Crescent25Tue
26Wed12:317.71:046.37:080.17:130.17:217:41First Quarter26Wed
27Thu1:277.22:025.98:100.68:150.57:197:41First Quarter27Thu
28Fri2:256.83:035.79:170.99:230.97:187:42First Quarter28Fri
29Sat3:286.54:085.610:231.110:291.07:177:42First Quarter29Sat
30Sun4:326.35:115.711:221.111:300.97:167:43Waxing Gibbous30Sun
31Mon5:346.36:095.912:131.07:147:44Waxing Gibbous31Mon
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 5:10 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 spring phase. Tonight's moon is 98% 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 Full Moon (98% 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