Tides Today & Tomorrow in St. Simons Island, GA

TIDE TIMES for Sunday, July 5, 2026
The tide is currently rising in St. Simons Island, GA.
Next low tide (tomorrow) : 7:18 am (0.2 ft)
Next high tide (tomorrow) : in 2h 21m at 12:48 am (6.4 ft)
Sunset today : 8:33 pm
Sunrise tomorrow : 6:27 am
Moon phase : Waning Gibbous (72% illuminated)
Tide Station Location : Station #8677344
Common Questions About Tides

St. Simons Island, GA Tides - Mar 2053

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat5:117.15:456.611:52-0.46:516:24Waxing Gibbous1Sat
2Sun6:117.46:417.012:09-0.912:48-0.86:506:24Waxing Gibbous2Sun
3Mon7:047.67:327.31:06-1.21:38-1.06:486:25Full Moon3Mon
4Tue7:537.78:197.51:58-1.32:25-1.16:476:26Full Moon4Tue
5Wed8:397.69:047.42:46-1.33:07-1.16:466:27Full Moon5Wed
6Thu9:237.49:497.33:31-1.13:47-0.96:456:27Waning Gibbous6Thu
7Fri10:077.010:327.14:13-0.84:25-0.66:446:28Waning Gibbous7Fri
8Sat10:516.611:166.84:55-0.35:01-0.26:436:29Waning Gibbous8Sat
9Sun12:366.36:370.16:390.27:417:29Waning Gibbous9Sun
10Mon1:006.51:215.97:220.67:210.67:407:30Third Quarter10Mon
11Tue1:466.22:085.78:130.98:090.97:397:31Third Quarter11Tue
12Wed2:346.02:595.59:081.19:061.07:387:31Third Quarter12Wed
13Thu3:285.93:545.410:051.210:061.07:367:32Third Quarter13Thu
14Fri4:265.94:525.511:001.111:040.97:357:33Waning Crescent14Fri
15Sat5:256.05:475.811:520.911:590.77:347:34Waning Crescent15Sat
16Sun6:186.26:376.112:410.67:337:34Waning Crescent16Sun
17Mon7:056.57:216.512:510.41:270.27:327:35Waning Crescent17Mon
18Tue7:476.88:026.91:400.12:10-0.17:307:36New Moon18Tue
19Wed8:267.08:417.22:26-0.22:51-0.47:297:36New Moon19Wed
20Thu9:057.29:207.53:10-0.53:31-0.67:287:37New Moon20Thu
21Fri9:457.210:027.73:53-0.64:11-0.77:277:38New Moon21Fri
22Sat10:287.110:477.74:36-0.64:53-0.77:257:38Waxing Crescent22Sat
23Sun11:167.011:367.75:21-0.55:37-0.67:247:39Waxing Crescent23Sun
24Mon12:086.76:10-0.36:27-0.37:237:39Waxing Crescent24Mon
25Tue12:317.51:046.57:060.17:24-0.17:227:40First Quarter25Tue
26Wed1:297.42:066.48:120.38:310.27:207:41First Quarter26Wed
27Thu2:337.23:126.39:230.49:430.27:197:41First Quarter27Thu
28Fri3:407.04:226.410:310.310:520.17:187:42First Quarter28Fri
29Sat4:507.15:306.611:350.111:56-0.17:177:43Waxing Gibbous29Sat
30Sun5:557.26:327.012:33-0.17:157:43Waxing Gibbous30Sun
31Mon6:537.47:257.412:56-0.41:26-0.47:147:44Waxing 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 4:03 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 72% 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 Waning Gibbous (72% 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