Tides Today & Tomorrow in St. Simons Island, GA

TIDE TIMES for Friday, July 10, 2026
The tide is currently falling in St. Simons Island, GA.
Next low tide (tomorrow) : in 4h 33m at 12:05 am (0.4 ft)
Next high tide (tomorrow) : 5:45 am (5.9 ft)
Sunset today : 8:32 pm
Sunrise tomorrow : 6:29 am
Moon phase : Waning Crescent (20% illuminated)
Tide Station Location : Station #8677344
Common Questions About Tides

St. Simons Island, GA Tides - Mar 1993

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon12:506.21:175.47:200.97:410.56:516:23First Quarter1Mon
2Tue1:486.32:205.48:300.98:500.46:506:24First Quarter2Tue
3Wed2:546.43:295.69:400.79:590.16:496:25Waxing Gibbous3Wed
4Thu4:036.74:386.110:460.311:05-0.36:486:26Waxing Gibbous4Thu
5Fri5:097.15:406.611:46-0.26:476:26Waxing Gibbous5Fri
6Sat6:087.56:367.212:07-0.812:41-0.76:466:27Waxing Gibbous6Sat
7Sun7:017.87:287.71:06-1.21:33-1.26:446:28Full Moon7Sun
8Mon7:527.98:198.12:00-1.62:22-1.56:436:28Full Moon8Mon
9Tue8:437.99:108.22:52-1.73:09-1.66:426:29Full Moon9Tue
10Wed9:337.610:028.13:43-1.53:56-1.46:416:30Waning Gibbous10Wed
11Thu10:257.310:557.84:34-1.24:43-1.16:406:31Waning Gibbous11Thu
12Fri11:196.911:507.45:26-0.75:33-0.66:386:31Waning Gibbous12Fri
13Sat12:146.46:23-0.26:28-0.16:376:32Third Quarter13Sat
14Sun12:467.01:116.17:250.37:300.46:366:33Third Quarter14Sun
15Mon1:456.62:105.88:290.68:360.66:356:33Third Quarter15Mon
16Tue2:476.33:115.79:310.79:400.76:336:34Third Quarter16Tue
17Wed3:506.24:125.810:270.710:380.76:326:35Waning Crescent17Wed
18Thu4:486.35:086.011:170.611:310.66:316:35Waning Crescent18Thu
19Fri5:396.45:566.312:030.46:306:36Waning Crescent19Fri
20Sat6:246.56:396.612:190.412:440.26:286:37Waning Crescent20Sat
21Sun7:046.67:186.91:030.31:220.16:276:37New Moon21Sun
22Mon7:416.77:537.01:430.11:570.06:266:38New Moon22Mon
23Tue8:166.68:267.12:190.12:290.06:256:39New Moon23Tue
24Wed8:496.58:587.12:530.13:010.06:236:39New Moon24Wed
25Thu9:216.39:307.03:260.23:320.16:226:40Waxing Crescent25Thu
26Fri9:546.110:057.03:580.34:050.26:216:40Waxing Crescent26Fri
27Sat10:296.010:446.94:330.54:410.46:206:41Waxing Crescent27Sat
28Sun11:105.911:316.95:120.65:230.56:186:42Waxing Crescent28Sun
29Mon11:595.85:590.86:140.66:176:42First Quarter29Mon
30Tue12:236.812:555.86:570.97:160.76:166:43First Quarter30Tue
31Wed1:236.81:586.08:050.98:280.66:156:44First 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 2:55 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 20% 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 Waning Crescent (20% 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