Tides Today & Tomorrow in St. Simons Island, GA

TIDE TIMES for Wednesday, July 1, 2026
The tide is currently rising in St. Simons Island, GA.
Next low tide (tomorrow) : 4:46 am (0.3 ft)
Next high tide : in 2h 02m at 10:11 pm (6.8 ft)
Sunset today : 8:33 pm
Sunrise tomorrow : 6:25 am
Moon phase : Full Moon (97% illuminated)
Tide Station Location : Station #8677344
Common Questions About Tides

St. Simons Island, GA Tides - Jan 2047

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue11:436.15:270.35:590.17:235:34Waxing Crescent1Tue
2Wed12:055.812:265.86:110.66:400.37:245:35First Quarter2Wed
3Thu12:515.71:115.47:020.97:250.47:245:35First Quarter3Thu
4Fri1:375.71:585.27:571.08:130.57:245:36First Quarter4Fri
5Sat2:265.72:505.08:551.19:030.47:245:37First Quarter5Sat
6Sun3:185.83:455.09:521.09:550.37:245:38Waxing Gibbous6Sun
7Mon4:125.94:405.010:460.810:470.17:245:38Waxing Gibbous7Mon
8Tue5:046.15:315.211:380.511:38-0.17:245:39Waxing Gibbous8Tue
9Wed5:536.46:185.412:280.27:245:40Waxing Gibbous9Wed
10Thu6:386.77:015.712:28-0.41:15-0.17:245:41Full Moon10Thu
11Fri7:217.07:435.91:17-0.71:59-0.47:245:42Full Moon11Fri
12Sat8:047.28:256.12:03-0.92:41-0.77:245:43Full Moon12Sat
13Sun8:477.39:096.32:48-1.13:22-0.97:245:43Full Moon13Sun
14Mon9:327.29:576.53:34-1.14:04-1.07:245:44Waning Gibbous14Mon
15Tue10:207.110:486.54:21-1.04:48-1.07:245:45Waning Gibbous15Tue
16Wed11:116.811:426.65:12-0.85:35-0.97:245:46Waning Gibbous16Wed
17Thu12:046.46:09-0.56:28-0.77:235:47Third Quarter17Thu
18Fri12:396.61:016.17:14-0.27:27-0.57:235:48Third Quarter18Fri
19Sat1:406.52:025.88:240.08:32-0.47:235:49Third Quarter19Sat
20Sun2:456.53:085.59:340.09:38-0.47:235:50Waning Crescent20Sun
21Mon3:546.54:175.510:40-0.110:43-0.57:225:50Waning Crescent21Mon
22Tue5:026.65:215.611:42-0.211:44-0.67:225:51Waning Crescent22Tue
23Wed6:026.86:195.912:38-0.57:225:52Waning Crescent23Wed
24Thu6:547.07:106.112:41-0.81:29-0.77:215:53New Moon24Thu
25Fri7:427.07:566.21:33-0.92:15-0.87:215:54New Moon25Fri
26Sat8:257.08:406.32:19-0.92:56-0.87:205:55New Moon26Sat
27Sun9:066.89:226.23:01-0.83:33-0.87:205:56New Moon27Sun
28Mon9:466.610:026.23:40-0.64:07-0.67:195:57Waxing Crescent28Mon
29Tue10:256.210:426.14:16-0.34:40-0.47:195:58Waxing Crescent29Tue
30Wed11:035.911:215.94:520.05:12-0.27:185:59Waxing Crescent30Wed
31Thu11:435.65:290.35:460.17:175:59Waxing Crescent31Thu
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 1:28 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 97% 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 Full Moon (97% 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