Tides Today & Tomorrow in St. Simons Island, GA

TIDE TIMES for Sunday, July 5, 2026
The tide is currently falling in St. Simons Island, GA.
Next low tide : in 3h 07m at 6:34 am (0.2 ft)
Next high tide : 12:34 pm (6.1 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 - Jun 2002

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat1:276.61:565.88:000.87:591.36:228:24Third Quarter1Sat
2Sun2:166.32:475.88:510.98:591.46:218:25Third Quarter2Sun
3Mon3:066.03:395.89:400.99:571.46:218:25Third Quarter3Mon
4Tue3:585.94:306.010:250.810:521.36:218:26Third Quarter4Tue
5Wed4:505.85:206.311:090.611:441.26:218:26Waning Crescent5Wed
6Thu5:415.86:076.611:530.56:218:27Waning Crescent6Thu
7Fri6:295.86:506.912:331.012:360.36:218:27Waning Crescent7Fri
8Sat7:135.97:317.11:210.71:200.26:218:28Waning Crescent8Sat
9Sun7:555.98:107.32:060.52:030.06:218:28New Moon9Sun
10Mon8:346.08:497.52:500.32:46-0.16:218:29New Moon10Mon
11Tue9:146.09:297.53:330.13:29-0.16:218:29New Moon11Tue
12Wed9:566.010:137.64:150.04:13-0.26:218:29New Moon12Wed
13Thu10:426.011:027.54:580.04:58-0.16:218:30Waxing Crescent13Thu
14Fri11:346.011:547.45:430.05:470.06:218:30Waxing Crescent14Fri
15Sat12:296.16:320.06:420.16:218:30Waxing Crescent15Sat
16Sun12:497.21:276.27:260.07:450.36:218:31First Quarter16Sun
17Mon1:467.12:276.58:24-0.18:530.36:218:31First Quarter17Mon
18Tue2:456.93:286.79:24-0.210:010.36:218:31First Quarter18Tue
19Wed3:466.74:307.010:22-0.311:070.16:218:32First Quarter19Wed
20Thu4:486.65:317.411:18-0.56:218:32Waxing Gibbous20Thu
21Fri5:496.56:297.712:09-0.112:13-0.66:228:32Waxing Gibbous21Fri
22Sat6:476.57:237.91:08-0.31:08-0.66:228:32Waxing Gibbous22Sat
23Sun7:416.58:137.92:04-0.42:01-0.66:228:32Full Moon23Sun
24Mon8:326.49:017.82:56-0.52:51-0.66:228:33Full Moon24Mon
25Tue9:216.39:487.63:44-0.53:38-0.46:238:33Full Moon25Tue
26Wed10:096.210:357.44:30-0.34:23-0.26:238:33Full Moon26Wed
27Thu10:576.011:217.05:12-0.15:050.16:238:33Waning Gibbous27Thu
28Fri11:465.95:540.15:470.56:248:33Waning Gibbous28Fri
29Sat12:076.712:335.86:340.46:300.86:248:33Waning Gibbous29Sat
30Sun12:526.41:205.77:160.57:161.16:248:33Third 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 9:34 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