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 : 6:40 pm (0.7 ft)
Next high tide : in 2h 16m at 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 - Dec 2001

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat8:037.88:276.52:06-0.32:450.07:065:23Full Moon1Sat
2Sun8:477.99:126.52:49-0.33:290.07:075:22Waning Gibbous2Sun
3Mon9:347.810:026.43:34-0.34:150.07:085:22Waning Gibbous3Mon
4Tue10:267.610:576.34:21-0.25:050.17:085:22Waning Gibbous4Tue
5Wed11:237.511:576.25:14-0.16:010.27:095:23Waning Gibbous5Wed
6Thu12:237.36:150.17:020.37:105:23Third Quarter6Thu
7Fri12:596.31:247.17:240.38:060.27:115:23Third Quarter7Fri
8Sat2:046.42:266.98:350.39:080.07:115:23Third Quarter8Sat
9Sun3:096.73:306.89:420.110:06-0.37:125:23Waning Crescent9Sun
10Mon4:137.04:316.710:45-0.111:01-0.57:135:23Waning Crescent10Mon
11Tue5:127.45:296.711:44-0.311:53-0.67:145:23Waning Crescent11Tue
12Wed6:057.66:216.812:39-0.57:145:24Waning Crescent12Wed
13Thu6:547.87:106.712:44-0.71:31-0.67:155:24New Moon13Thu
14Fri7:407.87:566.61:31-0.72:18-0.67:165:24New Moon14Fri
15Sat8:247.78:416.42:16-0.73:02-0.57:165:25New Moon15Sat
16Sun9:077.49:256.22:57-0.53:43-0.37:175:25New Moon16Sun
17Mon9:507.110:096.03:37-0.24:230.07:175:25Waxing Crescent17Mon
18Tue10:336.810:545.84:140.15:010.37:185:26Waxing Crescent18Tue
19Wed11:176.411:395.64:520.45:400.57:195:26Waxing Crescent19Wed
20Thu12:016.15:330.76:220.77:195:27Waxing Crescent20Thu
21Fri12:255.512:455.96:190.97:070.87:205:27First Quarter21Fri
22Sat1:115.51:325.77:121.17:560.77:205:28First Quarter22Sat
23Sun2:005.52:215.58:121.28:460.67:215:28First Quarter23Sun
24Mon2:515.63:135.49:121.19:350.47:215:29First Quarter24Mon
25Tue3:435.94:085.410:100.910:250.27:215:29Waxing Gibbous25Tue
26Wed4:356.25:015.511:060.611:15-0.17:225:30Waxing Gibbous26Wed
27Thu5:256.65:515.711:590.37:225:31Waxing Gibbous27Thu
28Fri6:137.06:385.912:05-0.312:510.07:225:31Waxing Gibbous28Fri
29Sat6:597.37:236.112:55-0.61:41-0.47:235:32Full Moon29Sat
30Sun7:457.68:106.21:45-0.92:28-0.67:235:32Full Moon30Sun
31Mon8:337.78:596.32:33-1.13:16-0.87:235:33Full Moon31Mon
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 3:37 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 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