Tides Today & Tomorrow in St. Simons Island, GA

TIDE TIMES for Sunday, June 28, 2026
The tide is currently rising in St. Simons Island, GA.
Next low tide : 2:00 pm (0.3 ft)
Next high tide : in 3h 59m at 7:54 am (5.7 ft)
Sunset today : 8:33 pm
Sunrise tomorrow : 6:24 am
Moon phase : Full Moon (98% illuminated)
Tide Station Location : Station #8677344
Common Questions About Tides

St. Simons Island, GA Tides - Sep 2009

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue6:376.37:097.112:501.312:481.17:017:49Waxing Gibbous1Tue
2Wed7:226.67:497.31:331.11:341.07:027:47Full Moon2Wed
3Thu8:036.88:267.32:120.92:170.87:037:46Full Moon3Thu
4Fri8:397.19:007.32:490.72:580.87:037:45Full Moon4Fri
5Sat9:147.29:337.33:240.63:360.77:047:44Full Moon5Sat
6Sun9:487.410:077.13:570.54:140.87:047:42Waning Gibbous6Sun
7Mon10:247.510:447.04:310.54:520.97:057:41Waning Gibbous7Mon
8Tue11:057.511:256.85:070.55:331.07:057:40Waning Gibbous8Tue
9Wed11:517.65:470.66:191.27:067:39Waning Gibbous9Wed
10Thu12:146.612:447.66:330.87:151.57:077:37Third Quarter10Thu
11Fri1:086.51:427.57:290.98:231.67:077:36Third Quarter11Fri
12Sat2:106.42:477.58:361.09:371.67:087:35Third Quarter12Sat
13Sun3:186.43:567.69:490.910:471.37:087:33Third Quarter13Sun
14Mon4:306.65:067.810:590.711:501.07:097:32Waning Crescent14Mon
15Tue5:397.06:108.112:050.47:097:31Waning Crescent15Tue
16Wed6:427.57:088.312:480.51:060.17:107:30Waning Crescent16Wed
17Thu7:378.08:008.51:420.12:04-0.27:117:28New Moon17Thu
18Fri8:288.48:488.42:31-0.22:57-0.37:117:27New Moon18Fri
19Sat9:178.69:358.23:17-0.33:47-0.27:127:26New Moon19Sat
20Sun10:048.610:227.94:01-0.34:350.07:127:24Waxing Crescent20Sun
21Mon10:518.411:097.54:420.05:210.47:137:23Waxing Crescent21Mon
22Tue11:388.111:577.15:230.46:070.97:147:22Waxing Crescent22Tue
23Wed12:267.76:040.86:551.37:147:20Waxing Crescent23Wed
24Thu12:456.71:167.46:481.27:471.77:157:19First Quarter24Thu
25Fri1:356.42:077.17:371.68:432.07:157:18First Quarter25Fri
26Sat2:266.23:006.98:331.89:402.17:167:17First Quarter26Sat
27Sun3:206.23:566.89:331.910:332.07:177:15First Quarter27Sun
28Mon4:166.24:526.810:311.911:221.97:177:14Waxing Gibbous28Mon
29Tue5:126.45:447.011:251.77:187:13Waxing Gibbous29Tue
30Wed6:036.76:317.112:071.612:151.57:187:12Waxing Gibbous30Wed
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 10:57 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 98% 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 (98% 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