Tides Today & Tomorrow in St. Simons Island, GA

TIDE TIMES for Tuesday, June 23, 2026
The tide is currently falling in St. Simons Island, GA.
Next low tide : in 4h 11m at 11:05 pm (0.7 ft)
Next high tide (tomorrow) : 4:41 am (5.8 ft)
Sunset today : 8:33 pm
Sunrise tomorrow : 6:22 am
Moon phase : First Quarter (67% illuminated)
Tide Station Location : Station #8677344
Common Questions About Tides

St. Simons Island, GA Tides - Jul 2036

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue3:046.83:496.99:40-0.410:200.26:258:33First Quarter1Tue
2Wed4:026.54:467.010:35-0.311:190.26:268:33Waxing Gibbous2Wed
3Thu4:596.35:427.111:27-0.26:268:33Waxing Gibbous3Thu
4Fri5:546.26:337.212:150.212:17-0.26:278:33Waxing Gibbous4Fri
5Sat6:456.17:207.21:070.11:04-0.16:278:33Waxing Gibbous5Sat
6Sun7:336.28:037.31:550.11:50-0.16:278:33Full Moon6Sun
7Mon8:176.28:447.22:400.02:330.06:288:32Full Moon7Mon
8Tue8:596.19:237.13:210.03:120.16:288:32Full Moon8Tue
9Wed9:406.110:017.03:580.13:490.26:298:32Full Moon9Wed
10Thu10:196.010:386.84:330.14:240.36:298:32Waning Gibbous10Thu
11Fri10:595.911:146.65:070.24:590.56:308:32Waning Gibbous11Fri
12Sat11:375.911:516.45:400.35:350.66:318:31Waning Gibbous12Sat
13Sun12:175.96:150.46:140.86:318:31Waning Gibbous13Sun
14Mon12:306.312:586.06:530.46:591.06:328:31Third Quarter14Mon
15Tue1:116.11:426.17:360.47:511.06:328:30Third Quarter15Tue
16Wed1:576.12:316.38:250.48:521.06:338:30Third Quarter16Wed
17Thu2:486.03:246.69:190.39:560.96:338:29Third Quarter17Thu
18Fri3:456.04:226.910:160.111:010.76:348:29Waning Crescent18Fri
19Sat4:476.05:237.311:15-0.16:358:28Waning Crescent19Sat
20Sun5:516.26:237.712:050.412:15-0.46:358:28Waning Crescent20Sun
21Mon6:516.57:218.11:070.01:15-0.76:368:27Waning Crescent21Mon
22Tue7:496.88:168.42:06-0.42:14-1.06:368:27New Moon22Tue
23Wed8:457.19:108.53:01-0.73:10-1.26:378:26New Moon23Wed
24Thu9:407.210:058.53:54-1.04:05-1.26:388:26New Moon24Thu
25Fri10:377.311:008.34:44-1.14:59-1.16:388:25Waxing Crescent25Fri
26Sat11:357.311:567.95:34-1.05:54-0.86:398:24Waxing Crescent26Sat
27Sun12:337.36:25-0.96:51-0.46:398:24Waxing Crescent27Sun
28Mon12:517.61:307.37:18-0.67:510.06:408:23First Quarter28Mon
29Tue1:457.12:267.28:13-0.38:540.36:418:22First Quarter29Tue
30Wed2:406.83:217.19:09-0.19:560.56:418:22First Quarter30Wed
31Thu3:346.44:177.010:040.110:540.66:428:21First Quarter31Thu
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 1:53 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 67% 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 First Quarter (67% 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