Tides Today & Tomorrow in St. Simons Island, GA

TIDE TIMES for Friday, August 7, 2026
The tide is currently falling in St. Simons Island, GA.
Next low tide : in 4h 48m at 10:44 pm (1.0 ft)
Next high tide (tomorrow) : 4:21 am (5.9 ft)
Sunset today : 8:16 pm
Sunrise tomorrow : 6:46 am
Moon phase : Third Quarter (32% illuminated)
Tide Station Location : Station #8677344
Common Questions About Tides

St. Simons Island, GA Tides - Mar 1956

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu11:226.411:496.75:27-0.35:30-0.26:516:24Waning Gibbous1Thu
2Fri12:096.06:150.26:140.36:506:24Third Quarter2Fri
3Sat12:376.312:575.67:070.77:030.66:496:25Third Quarter3Sat
4Sun1:276.01:495.48:041.07:590.96:486:26Third Quarter4Sun
5Mon2:215.82:445.39:021.18:591.06:476:26Third Quarter5Mon
6Tue3:205.83:435.39:571.19:580.96:466:27Waning Crescent6Tue
7Wed4:195.84:405.510:480.910:530.76:446:28Waning Crescent7Wed
8Thu5:136.05:315.811:360.711:440.56:436:29Waning Crescent8Thu
9Fri6:016.36:166.212:200.46:426:29Waning Crescent9Fri
10Sat6:426.56:566.512:320.21:020.16:416:30New Moon10Sat
11Sun7:206.77:336.81:160.01:40-0.26:406:31New Moon11Sun
12Mon7:566.88:087.11:58-0.22:18-0.46:386:31New Moon12Mon
13Tue8:316.88:457.32:37-0.42:54-0.56:376:32New Moon13Tue
14Wed9:086.79:247.43:17-0.43:31-0.56:366:33Waxing Crescent14Wed
15Thu9:496.610:087.43:57-0.34:11-0.56:356:33Waxing Crescent15Thu
16Fri10:356.410:577.34:41-0.14:54-0.36:336:34Waxing Crescent16Fri
17Sat11:276.311:527.25:300.15:45-0.16:326:35Waxing Crescent17Sat
18Sun12:246.16:280.46:450.16:316:35First Quarter18Sun
19Mon12:527.01:286.07:370.67:560.26:306:36First Quarter19Mon
20Tue1:586.92:376.18:500.59:100.26:286:37First Quarter20Tue
21Wed3:096.93:496.39:580.310:190.06:276:37Waxing Gibbous21Wed
22Thu4:197.04:576.711:000.011:23-0.36:266:38Waxing Gibbous22Thu
23Fri5:227.35:567.211:56-0.36:256:39Waxing Gibbous23Fri
24Sat6:187.56:487.612:22-0.612:48-0.76:236:39Waxing Gibbous24Sat
25Sun7:087.67:367.91:17-0.91:36-0.86:226:40Full Moon25Sun
26Mon7:557.58:218.02:07-1.02:20-0.96:216:41Full Moon26Mon
27Tue8:397.49:047.92:53-0.93:01-0.76:206:41Full Moon27Tue
28Wed9:237.19:467.73:36-0.73:39-0.56:186:42Waning Gibbous28Wed
29Thu10:066.810:297.34:17-0.34:16-0.16:176:42Waning Gibbous29Thu
30Fri10:506.411:127.04:580.14:520.36:166:43Waning Gibbous30Fri
31Sat11:356.111:576.65:390.65:310.76:156:44Waning Gibbous31Sat
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 1:32 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 32% 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 Third Quarter (32% 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