Tides Today & Tomorrow in St. Simons Island, GA

TIDE TIMES for Friday, August 14, 2026
The tide is currently rising in St. Simons Island, GA.
Next low tide (tomorrow) : 5:05 am (-0.4 ft)
Next high tide : in 2h 17m at 10:37 pm (7.8 ft)
Sunset today : 8:09 pm
Sunrise tomorrow : 6:50 am
Moon phase : Waxing Crescent (5% illuminated)
Tide Station Location : Station #8677344
Common Questions About Tides

St. Simons Island, GA Tides - Jul 1944

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat4:435.75:216.410:590.411:530.86:258:33Waxing Gibbous1Sat
2Sun5:375.86:116.811:490.26:258:33Waxing Gibbous2Sun
3Mon6:296.07:007.212:470.512:41-0.16:268:33Waxing Gibbous3Mon
4Tue7:196.27:477.51:400.21:34-0.36:268:33Full Moon4Tue
5Wed8:086.48:347.82:31-0.22:26-0.56:268:33Full Moon5Wed
6Thu8:576.59:237.93:21-0.53:17-0.76:278:33Full Moon6Thu
7Fri9:476.710:147.94:09-0.74:08-0.86:278:32Full Moon7Fri
8Sat10:416.811:087.84:57-0.85:00-0.76:288:32Waning Gibbous8Sat
9Sun11:376.85:47-0.85:54-0.66:288:32Waning Gibbous9Sun
10Mon12:047.612:356.96:39-0.86:52-0.36:298:32Waning Gibbous10Mon
11Tue1:017.41:347.07:33-0.77:560.06:298:32Third Quarter11Tue
12Wed1:587.12:327.18:31-0.69:030.26:308:31Third Quarter12Wed
13Thu2:566.83:317.19:29-0.510:100.26:308:31Third Quarter13Thu
14Fri3:566.54:317.210:26-0.511:120.26:318:31Waning Crescent14Fri
15Sat4:566.35:307.311:22-0.56:328:30Waning Crescent15Sat
16Sun5:566.26:257.412:120.212:15-0.46:328:30Waning Crescent16Sun
17Mon6:516.27:167.51:070.11:08-0.46:338:30Waning Crescent17Mon
18Tue7:416.28:037.51:590.11:57-0.36:338:29New Moon18Tue
19Wed8:286.38:467.52:470.02:44-0.26:348:29New Moon19Wed
20Thu9:136.29:287.43:290.03:27-0.16:358:28New Moon20Thu
21Fri9:556.210:097.24:080.14:070.16:358:28New Moon21Fri
22Sat10:376.110:497.04:430.24:440.36:368:27Waxing Crescent22Sat
23Sun11:196.011:286.75:160.35:210.56:368:27Waxing Crescent23Sun
24Mon11:595.95:490.55:590.86:378:26Waxing Crescent24Mon
25Tue12:086.512:405.96:220.66:391.06:388:25Waxing Crescent25Tue
26Wed12:486.31:205.96:590.77:251.26:388:25First Quarter26Wed
27Thu1:306.12:026.07:400.78:181.36:398:24First Quarter27Thu
28Fri2:145.92:476.28:270.79:161.36:398:23First Quarter28Fri
29Sat3:035.83:386.49:200.610:161.26:408:23First Quarter29Sat
30Sun3:575.84:346.610:150.511:161.06:418:22Waxing Gibbous30Sun
31Mon4:555.95:327.011:120.36:418:21Waxing Gibbous31Mon
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8677344)

Common Questions About St. Simons Island, GA Tides

Show All
What time does the tide turn (slack tide) in St. Simons Island, GA today?

Slack tide in St. Simons Island, GA is approximately 1:51 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 5% 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 Crescent (5% 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