Tides Today & Tomorrow in St. Simons Island, GA

TIDE TIMES for Saturday, July 11, 2026
The tide is currently falling in St. Simons Island, GA.
Next low tide : in 8m at 12:07 pm (-0.4 ft)
Next high tide : 6:21 pm (7.7 ft)
Sunset today : 8:32 pm
Sunrise tomorrow : 6:30 am
Moon phase : Waning Crescent (11% illuminated)
Tide Station Location : Station #8677344
Common Questions About Tides

St. Simons Island, GA Tides - Feb 2062

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed1:406.01:555.28:150.68:120.37:176:01Third Quarter1Wed
2Thu2:325.82:495.09:130.89:050.57:166:02Third Quarter2Thu
3Fri3:285.73:464.910:090.89:590.57:156:02Waning Crescent3Fri
4Sat4:265.74:435.011:020.710:530.47:156:03Waning Crescent4Sat
5Sun5:215.85:365.111:520.611:440.37:146:04Waning Crescent5Sun
6Mon6:106.06:235.312:380.47:136:05Waning Crescent6Mon
7Tue6:536.37:055.612:320.01:200.17:126:06New Moon7Tue
8Wed7:326.47:435.81:16-0.21:59-0.17:126:07New Moon8Wed
9Thu8:076.58:185.91:57-0.32:34-0.37:116:08New Moon9Thu
10Fri8:416.58:536.12:35-0.43:08-0.47:106:08New Moon10Fri
11Sat9:146.59:296.23:12-0.43:41-0.57:096:09Waxing Crescent11Sat
12Sun9:506.410:086.43:50-0.44:15-0.57:086:10Waxing Crescent12Sun
13Mon10:296.210:516.54:29-0.34:52-0.47:076:11Waxing Crescent13Mon
14Tue11:146.011:406.55:14-0.15:34-0.37:066:12Waxing Crescent14Tue
15Wed12:055.76:060.26:24-0.17:056:13First Quarter15Wed
16Thu12:346.51:025.57:090.57:260.07:056:13First Quarter16Thu
17Fri1:366.52:085.38:250.68:370.07:046:14First Quarter17Fri
18Sat2:456.53:215.39:420.59:51-0.17:036:15Waxing Gibbous18Sat
19Sun4:006.64:375.510:520.311:00-0.47:026:16Waxing Gibbous19Sun
20Mon5:116.95:446.011:56-0.17:016:17Waxing Gibbous20Mon
21Tue6:147.36:426.412:05-0.812:53-0.57:006:17Waxing Gibbous21Tue
22Wed7:087.57:346.81:04-1.11:44-0.96:596:18Full Moon22Wed
23Thu7:587.68:237.11:58-1.32:30-1.16:586:19Full Moon23Thu
24Fri8:447.59:107.22:47-1.43:12-1.26:566:20Full Moon24Fri
25Sat9:297.39:557.23:33-1.23:52-1.06:556:21Waning Gibbous25Sat
26Sun10:136.910:397.04:18-0.94:30-0.76:546:21Waning Gibbous26Sun
27Mon10:576.511:236.85:01-0.45:06-0.36:536:22Waning Gibbous27Mon
28Tue11:416.05:460.15:440.16:526:23Waning Gibbous28Tue
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 3:14 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 spring phase. Tonight's moon is 11% 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 Waning Crescent (11% 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