Tides Today & Tomorrow in St. Simons Island, GA

TIDE TIMES for Monday, July 6, 2026
The tide is currently falling in St. Simons Island, GA.
Next low tide : in 3h 58m at 7:35 pm (0.8 ft)
Next high tide (tomorrow) : 1:37 am (6.2 ft)
Sunset today : 8:33 pm
Sunrise tomorrow : 6:27 am
Moon phase : Third Quarter (62% illuminated)
Tide Station Location : Station #8677344
Common Questions About Tides

St. Simons Island, GA Tides - Oct 1999

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri1:247.21:538.17:450.68:381.17:197:11Third Quarter1Fri
2Sat2:287.02:578.08:530.89:471.17:197:10Third Quarter2Sat
3Sun3:347.04:037.910:010.810:521.07:207:09Third Quarter3Sun
4Mon4:417.15:087.911:060.711:500.97:207:07Waning Crescent4Mon
5Tue5:447.36:088.012:060.67:217:06Waning Crescent5Tue
6Wed6:417.57:018.012:440.71:020.57:227:05Waning Crescent6Wed
7Thu7:317.87:488.11:330.51:540.47:227:04New Moon7Thu
8Fri8:168.08:318.02:190.42:410.47:237:02New Moon8Fri
9Sat8:578.19:127.92:590.43:250.47:247:01New Moon9Sat
10Sun9:378.09:517.63:370.54:050.67:247:00New Moon10Sun
11Mon10:157.910:317.34:110.64:430.87:256:59Waxing Crescent11Mon
12Tue10:537.711:117.04:430.85:191.17:266:58Waxing Crescent12Tue
13Wed11:327.511:526.75:151.15:551.47:266:56Waxing Crescent13Wed
14Thu12:127.25:481.36:341.77:276:55Waxing Crescent14Thu
15Fri12:346.512:557.06:261.67:191.97:286:54First Quarter15Fri
16Sat1:196.31:406.97:111.78:112.07:286:53First Quarter16Sat
17Sun2:076.22:306.88:051.99:082.07:296:52First Quarter17Sun
18Mon2:586.33:256.99:061.810:051.87:306:51First Quarter18Mon
19Tue3:546.44:227.010:091.711:001.57:316:50Waxing Gibbous19Tue
20Wed4:506.75:207.211:091.411:511.17:316:49Waxing Gibbous20Wed
21Thu5:457.26:137.612:061.07:326:48Waxing Gibbous21Thu
22Fri6:377.77:037.912:410.71:020.67:336:47Waxing Gibbous22Fri
23Sat7:258.27:518.11:300.21:560.27:336:45Full Moon23Sat
24Sun8:128.78:388.22:19-0.12:48-0.17:346:44Full Moon24Sun
25Mon9:008.99:278.13:06-0.43:39-0.27:356:43Full Moon25Mon
26Tue9:499.010:188.03:54-0.54:29-0.27:366:43Waning Gibbous26Tue
27Wed10:428.911:137.74:42-0.55:210.07:366:42Waning Gibbous27Wed
28Thu11:388.75:33-0.26:170.37:376:41Waning Gibbous28Thu
29Fri12:127.412:388.46:290.17:170.67:386:40Waning Gibbous29Fri
30Sat1:147.11:408.17:310.58:230.87:396:39Third Quarter30Sat
31Sun1:187.01:437.87:390.78:300.96:405:38Third Quarter31Sun
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 10:36 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 62% 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 Third Quarter (62% 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