Tides Today & Tomorrow in St. Simons Island, GA

TIDE TIMES for Tuesday, June 23, 2026
The tide is currently rising in St. Simons Island, GA.
Next low tide : 11:05 pm (0.7 ft)
Next high tide : in 3h 42m at 4:32 pm (6.6 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 - Jan 2017

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun9:546.710:155.93:48-0.44:30-0.37:245:34Waxing Crescent1Sun
2Mon10:376.611:026.04:29-0.35:11-0.37:245:35Waxing Crescent2Mon
3Tue11:256.511:536.15:15-0.25:58-0.27:245:36Waxing Crescent3Tue
4Wed12:176.46:090.06:51-0.37:245:36First Quarter4Wed
5Thu12:486.21:146.27:120.17:51-0.37:245:37First Quarter5Thu
6Fri1:486.42:166.18:240.18:54-0.57:245:38First Quarter6Fri
7Sat2:526.63:236.09:360.09:57-0.77:245:39Waxing Gibbous7Sat
8Sun3:596.94:316.110:44-0.310:59-1.07:245:40Waxing Gibbous8Sun
9Mon5:047.25:356.311:48-0.67:245:40Waxing Gibbous9Mon
10Tue6:057.56:346.512:00-1.312:48-0.97:245:41Waxing Gibbous10Tue
11Wed7:017.87:296.712:57-1.51:43-1.27:245:42Full Moon11Wed
12Thu7:537.98:216.71:52-1.72:34-1.37:245:43Full Moon12Thu
13Fri8:447.89:126.72:43-1.73:22-1.37:245:44Full Moon13Fri
14Sat9:337.510:026.53:32-1.54:07-1.27:245:45Waning Gibbous14Sat
15Sun10:227.210:526.34:19-1.24:51-0.97:245:45Waning Gibbous15Sun
16Mon11:106.811:416.15:05-0.75:34-0.57:245:46Waning Gibbous16Mon
17Tue11:576.35:54-0.36:19-0.27:235:47Waning Gibbous17Tue
18Wed12:305.912:446.06:450.27:050.17:235:48Third Quarter18Wed
19Thu1:185.81:325.67:400.57:530.37:235:49Third Quarter19Thu
20Fri2:085.72:235.48:370.68:430.37:235:50Third Quarter20Fri
21Sat3:015.63:165.29:330.79:340.37:225:51Third Quarter21Sat
22Sun3:555.74:115.210:260.610:240.27:225:52Waning Crescent22Sun
23Mon4:485.95:045.311:160.411:130.07:215:53Waning Crescent23Mon
24Tue5:376.15:525.512:040.27:215:53Waning Crescent24Tue
25Wed6:226.36:365.712:01-0.212:50-0.17:215:54Waning Crescent25Wed
26Thu7:036.57:175.912:47-0.41:33-0.37:205:55New Moon26Thu
27Fri7:416.77:556.01:31-0.62:13-0.57:205:56New Moon27Fri
28Sat8:186.88:336.22:13-0.82:52-0.77:195:57New Moon28Sat
29Sun8:566.99:126.32:53-0.93:30-0.87:195:58New Moon29Sun
30Mon9:366.99:556.43:34-0.94:09-0.97:185:59Waxing Crescent30Mon
31Tue10:206.710:426.54:17-0.84:50-0.87:176:00Waxing Crescent31Tue
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 7:48 pm — 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