Tides Today & Tomorrow in St. Simons Island, GA

TIDE TIMES for Sunday, July 5, 2026
The tide is currently rising in St. Simons Island, GA.
Next low tide (tomorrow) : 7:18 am (0.2 ft)
Next high tide (tomorrow) : in 4h 25m at 12:48 am (6.4 ft)
Sunset today : 8:33 pm
Sunrise tomorrow : 6:27 am
Moon phase : Waning Gibbous (72% illuminated)
Tide Station Location : Station #8677344
Common Questions About Tides

St. Simons Island, GA Tides - Mar 2001

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu12:055.86:030.46:250.26:516:23First Quarter1Thu
2Fri12:326.51:005.77:030.67:240.36:506:24First Quarter2Fri
3Sat1:316.62:045.68:150.78:340.26:496:25First Quarter3Sat
4Sun2:376.63:155.69:300.69:450.06:486:26First Quarter4Sun
5Mon3:506.84:275.910:400.310:54-0.36:476:26Waxing Gibbous5Mon
6Tue5:007.25:346.411:44-0.111:59-0.86:456:27Waxing Gibbous6Tue
7Wed6:037.66:336.912:42-0.66:446:28Waxing Gibbous7Wed
8Thu6:597.97:277.412:59-1.21:35-1.06:436:29Full Moon8Thu
9Fri7:518.08:187.71:54-1.52:24-1.36:426:29Full Moon9Fri
10Sat8:418.09:087.82:46-1.63:10-1.46:416:30Full Moon10Sat
11Sun9:307.89:577.73:35-1.53:54-1.26:396:31Waning Gibbous11Sun
12Mon10:197.410:467.54:24-1.14:37-0.96:386:31Waning Gibbous12Mon
13Tue11:086.911:357.25:12-0.65:21-0.46:376:32Waning Gibbous13Tue
14Wed11:576.46:03-0.16:070.16:366:33Waning Gibbous14Wed
15Thu12:256.912:476.06:570.46:570.56:356:33Third Quarter15Thu
16Fri1:166.51:405.77:560.87:530.96:336:34Third Quarter16Fri
17Sat2:116.22:355.58:561.08:541.06:326:35Third Quarter17Sat
18Sun3:096.03:345.59:521.19:521.16:316:35Third Quarter18Sun
19Mon4:096.04:315.610:441.010:480.96:306:36Waning Crescent19Mon
20Tue5:056.25:245.911:330.811:390.76:286:37Waning Crescent20Tue
21Wed5:556.46:116.212:170.66:276:37Waning Crescent21Wed
22Thu6:386.66:526.512:260.512:580.46:266:38Waning Crescent22Thu
23Fri7:176.77:296.71:090.31:360.26:256:39New Moon23Fri
24Sat7:526.88:036.91:500.12:110.06:236:39New Moon24Sat
25Sun8:266.88:367.12:270.02:45-0.16:226:40New Moon25Sun
26Mon8:596.79:107.23:040.03:19-0.16:216:41New Moon26Mon
27Tue9:346.69:487.23:400.03:53-0.16:206:41Waxing Crescent27Tue
28Wed10:136.410:307.24:190.14:310.06:186:42Waxing Crescent28Wed
29Thu10:586.211:197.25:010.35:130.26:176:42Waxing Crescent29Thu
30Fri11:496.15:510.56:050.46:166:43First Quarter30Fri
31Sat12:137.112:476.06:520.77:080.56:156:44First Quarter31Sat
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 4:03 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 72% 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 Waning Gibbous (72% 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