Tides Today & Tomorrow in St. Simons Island, GA

TIDE TIMES for Friday, June 19, 2026
The tide is currently rising in St. Simons Island, GA.
Next low tide (tomorrow) : 7:44 am (-0.2 ft)
Next high tide (tomorrow) : in 5h 34m at 1:12 am (7.2 ft)
Sunset today : 8:32 pm
Sunrise tomorrow : 6:21 am
Moon phase : Waxing Crescent (27% illuminated)
Tide Station Location : Station #8677344
Common Questions About Tides

St. Simons Island, GA Tides - Sep 2029

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat2:155.82:436.78:251.49:142.07:017:48Third Quarter1Sat
2Sun3:075.83:386.89:241.410:161.97:027:47Third Quarter2Sun
3Mon4:055.94:377.010:251.211:151.67:037:46Waning Crescent3Mon
4Tue5:056.25:357.311:250.97:037:45Waning Crescent4Tue
5Wed6:036.66:307.712:101.212:220.67:047:43Waning Crescent5Wed
6Thu6:567.17:208.01:020.81:180.37:047:42Waning Crescent6Thu
7Fri7:457.68:088.31:510.32:12-0.17:057:41New Moon7Fri
8Sat8:338.18:558.42:39-0.13:04-0.37:067:40New Moon8Sat
9Sun9:218.49:438.33:25-0.43:55-0.47:067:38New Moon9Sun
10Mon10:118.610:348.14:11-0.54:46-0.37:077:37Waxing Crescent10Mon
11Tue11:048.511:277.84:58-0.55:380.07:077:36Waxing Crescent11Tue
12Wed12:008.45:47-0.26:340.47:087:35Waxing Crescent12Wed
13Thu12:247.41:008.16:400.17:360.87:087:33First Quarter13Thu
14Fri1:237.12:017.97:410.58:431.17:097:32First Quarter14Fri
15Sat2:246.83:067.78:480.89:511.27:107:31First Quarter15Sat
16Sun3:286.74:117.59:570.910:531.17:107:29First Quarter16Sun
17Mon4:336.75:147.511:011.011:491.07:117:28Waxing Gibbous17Mon
18Tue5:356.96:117.612:000.97:117:27Waxing Gibbous18Tue
19Wed6:307.17:017.612:410.912:540.87:127:25Waxing Gibbous19Wed
20Thu7:197.47:457.71:270.71:440.87:127:24Waxing Gibbous20Thu
21Fri8:027.68:257.62:100.62:290.87:137:23Full Moon21Fri
22Sat8:417.79:037.52:480.63:090.87:147:22Full Moon22Sat
23Sun9:187.89:407.33:230.63:460.97:147:20Full Moon23Sun
24Mon9:547.710:167.13:560.74:211.17:157:19Full Moon24Mon
25Tue10:297.610:526.84:270.84:541.37:157:18Waning Gibbous25Tue
26Wed11:057.411:286.64:591.05:261.57:167:16Waning Gibbous26Wed
27Thu11:437.35:321.26:021.77:177:15Waning Gibbous27Thu
28Fri12:066.312:247.16:091.46:432.07:177:14Waning Gibbous28Fri
29Sat12:486.21:107.16:531.67:332.17:187:13Third Quarter29Sat
30Sun1:356.12:017.07:461.78:332.17:187:11Third Quarter30Sun
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 4:28 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 transitional phase. Tonight's moon is 27% 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 Waxing Crescent (27% 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