Tides Today & Tomorrow in St. Lucie, FL

TIDE TIMES for Friday, August 21, 2026
The tide is currently rising in St. Lucie, FL.
Next low tide (tomorrow) : 12:08 am (0.9 ft)
Next high tide : in 4h 57m at 5:04 pm (1.0 ft)
Sunset today : 7:53 pm
Sunrise tomorrow : 6:55 am
Moon phase : First Quarter (65% illuminated)
Tide Station Location : Station #8722207
Common Questions About Tides

St. Lucie, FL Tides - Sep 1925

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue8:351.49:111.53:050.23:30-0.27:007:42Full Moon1Tue
2Wed9:301.510:001.53:580.04:23-0.27:007:41Full Moon2Wed
3Thu10:211.510:471.54:49-0.15:13-0.27:007:40Full Moon3Thu
4Fri11:111.511:331.55:38-0.16:03-0.17:017:39Waning Gibbous4Fri
5Sat12:001.56:27-0.16:520.17:017:38Waning Gibbous5Sat
6Sun12:181.512:481.57:160.07:420.37:027:37Waning Gibbous6Sun
7Mon1:041.41:371.48:050.18:330.57:027:35Waning Gibbous7Mon
8Tue1:501.32:281.38:570.39:270.77:037:34Third Quarter8Tue
9Wed2:391.23:211.29:530.510:250.87:037:33Third Quarter9Wed
10Thu3:311.24:191.210:510.611:250.97:047:32Third Quarter10Thu
11Fri4:281.15:181.211:500.67:047:31Third Quarter11Fri
12Sat5:281.16:161.212:240.912:460.77:057:30Waning Crescent12Sat
13Sun6:261.17:081.21:180.91:380.67:057:29Waning Crescent13Sun
14Mon7:181.27:531.32:060.82:240.67:057:27Waning Crescent14Mon
15Tue8:051.28:351.32:490.73:060.57:067:26Waning Crescent15Tue
16Wed8:491.39:141.43:290.63:450.47:067:25New Moon16Wed
17Thu9:301.49:521.44:060.54:220.47:077:24New Moon17Thu
18Fri10:111.410:301.44:420.44:590.47:077:23New Moon18Fri
19Sat10:511.411:071.45:170.45:360.47:087:22New Moon19Sat
20Sun11:321.411:451.45:530.36:140.57:087:20Waxing Crescent20Sun
21Mon12:151.46:310.36:550.57:097:19Waxing Crescent21Mon
22Tue12:251.41:011.47:140.37:410.67:097:18Waxing Crescent22Tue
23Wed1:091.31:511.48:020.38:330.77:107:17Waxing Crescent23Wed
24Thu1:591.32:481.38:580.49:340.87:107:16First Quarter24Thu
25Fri2:571.33:521.310:030.410:430.87:107:15First Quarter25Fri
26Sat4:041.34:591.311:130.411:520.87:117:13First Quarter26Sat
27Sun4:161.35:051.411:220.411:570.66:116:12Waxing Gibbous27Sun
28Mon5:241.46:051.512:250.36:126:11Waxing Gibbous28Mon
29Tue6:261.57:001.512:560.51:230.26:126:10Waxing Gibbous29Tue
30Wed7:231.57:501.61:500.32:160.16:136:09Full Moon30Wed
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8722207)

Common Questions About St. Lucie, FL Tides

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What time does the tide turn (slack tide) in St. Lucie, FL today?

Slack tide in St. Lucie, FL is approximately 8:36 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. Lucie, FL?

St. Lucie, FL is currently in a transitional phase. Tonight's moon is 65% 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. Lucie, FL 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. Lucie, FL?

Tide predictions for St. Lucie, FL 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. Lucie, FL?

Tide data for St. Lucie, FL is sourced from NOAA Station #8722207. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8722207.

What is the moon phase in St. Lucie, FL tonight?

Tonight the moon over St. Lucie, FL is First Quarter (65% illuminated). This places St. Lucie, FL 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