Tides Today & Tomorrow in St. Simons Island, GA

TIDE TIMES for Sunday, July 26, 2026
The tide is currently rising in St. Simons Island, GA.
Next low tide : 12:45 pm (0.6 ft)
Next high tide : in 4h 59m at 6:39 am (5.6 ft)
Sunset today : 8:25 pm
Sunrise tomorrow : 6:38 am
Moon phase : Waxing Gibbous (92% illuminated)
Tide Station Location : Station #8677344
Common Questions About Tides

St. Simons Island, GA Tides - Dec 1976

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed4:056.64:296.210:381.010:480.47:065:23Waxing Gibbous1Wed
2Thu4:556.85:196.211:270.911:320.37:075:22Waxing Gibbous2Thu
3Fri5:416.96:056.212:120.77:085:22Waxing Gibbous3Fri
4Sat6:237.16:476.312:140.212:550.57:095:23Full Moon4Sat
5Sun7:037.27:266.312:550.11:360.47:095:23Full Moon5Sun
6Mon7:407.38:036.21:350.02:130.37:105:23Full Moon6Mon
7Tue8:157.28:386.12:130.02:490.37:115:23Full Moon7Tue
8Wed8:507.29:126.12:500.03:240.27:125:23Full Moon8Wed
9Thu9:267.19:496.03:270.03:590.27:125:23Waning Gibbous9Thu
10Fri10:067.010:306.04:050.14:370.37:135:23Waning Gibbous10Fri
11Sat10:506.911:166.14:470.25:180.37:145:23Waning Gibbous11Sat
12Sun11:386.85:340.36:050.27:145:24Third Quarter12Sun
13Mon12:086.212:316.76:300.47:000.27:155:24Third Quarter13Mon
14Tue1:046.41:286.67:350.58:000.07:165:24Third Quarter14Tue
15Wed2:056.62:296.58:450.49:03-0.27:165:25Third Quarter15Wed
16Thu3:106.93:346.59:530.110:05-0.57:175:25Waning Crescent16Thu
17Fri4:167.24:406.610:58-0.211:06-0.87:185:25Waning Crescent17Fri
18Sat5:197.65:416.712:00-0.57:185:26Waning Crescent18Sat
19Sun6:187.96:396.912:06-1.112:59-0.97:195:26New Moon19Sun
20Mon7:138.17:337.01:04-1.31:54-1.17:195:27New Moon20Mon
21Tue8:058.28:267.01:59-1.42:45-1.27:205:27New Moon21Tue
22Wed8:578.09:186.92:50-1.43:34-1.27:205:28New Moon22Wed
23Thu9:497.710:116.73:40-1.24:21-1.07:215:28Waxing Crescent23Thu
24Fri10:407.311:036.54:29-0.85:08-0.77:215:29Waxing Crescent24Fri
25Sat11:306.911:556.35:18-0.35:55-0.47:215:29Waxing Crescent25Sat
26Sun12:206.46:090.16:44-0.17:225:30First Quarter26Sun
27Mon12:466.11:096.07:050.57:340.27:225:31First Quarter27Mon
28Tue1:366.02:005.78:040.88:250.37:235:31First Quarter28Tue
29Wed2:285.92:525.59:020.99:150.37:235:32First Quarter29Wed
30Thu3:205.93:475.49:570.910:030.37:235:33Waxing Gibbous30Thu
31Fri4:146.04:405.410:480.77:235:33Waxing Gibbous31Fri
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 9:42 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 92% 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 Waxing Gibbous (92% 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