Tides Today & Tomorrow in St. Lucie, FL

TIDE TIMES for Tuesday, August 18, 2026
The tide is currently rising in St. Lucie, FL.
Next low tide : 9:17 pm (0.6 ft)
Next high tide : in 4h 37m at 2:19 pm (1.2 ft)
Sunset today : 7:56 pm
Sunrise tomorrow : 6:53 am
Moon phase : First Quarter (36% illuminated)
Tide Station Location : Station #8722207
Common Questions About Tides

St. Lucie, FL Tides - May 1933

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon2:171.02:210.99:060.69:230.46:427:54First Quarter1Mon
2Tue3:071.03:190.910:040.610:240.46:417:55First Quarter2Tue
3Wed4:021.04:240.911:060.511:280.46:407:55First Quarter3Wed
4Thu4:581.05:291.012:040.46:397:56First Quarter4Thu
5Fri5:541.06:311.112:290.412:580.26:397:56Waxing Gibbous5Fri
6Sat6:471.17:281.21:260.31:480.06:387:57Waxing Gibbous6Sat
7Sun7:391.18:211.32:190.22:37-0.36:377:58Waxing Gibbous7Sun
8Mon8:291.29:131.33:090.13:26-0.56:367:58Full Moon8Mon
9Tue9:191.210:041.43:590.04:15-0.66:367:59Full Moon9Tue
10Wed10:091.310:551.44:48-0.15:06-0.66:357:59Full Moon10Wed
11Thu11:011.311:471.45:39-0.15:58-0.66:348:00Waning Gibbous11Thu
12Fri11:541.36:310.06:53-0.56:348:00Waning Gibbous12Fri
13Sat12:401.312:501.27:270.17:50-0.36:338:01Waning Gibbous13Sat
14Sun1:351.31:481.28:270.18:52-0.26:338:02Waning Gibbous14Sun
15Mon2:311.22:511.19:310.29:570.06:328:02Third Quarter15Mon
16Tue3:291.23:561.110:360.211:020.16:318:03Third Quarter16Tue
17Wed4:281.15:021.111:380.16:318:03Third Quarter17Wed
18Thu5:261.16:051.112:040.212:350.16:308:04Waning Crescent18Thu
19Fri6:191.17:011.11:020.31:260.06:308:04Waning Crescent19Fri
20Sat7:091.17:501.11:530.32:12-0.16:298:05Waning Crescent20Sat
21Sun7:541.18:341.22:400.32:54-0.16:298:06Waning Crescent21Sun
22Mon8:351.19:141.23:230.33:35-0.16:298:06New Moon22Mon
23Tue9:141.19:531.24:030.34:14-0.16:288:07New Moon23Tue
24Wed9:531.110:311.24:420.34:51-0.16:288:07New Moon24Wed
25Thu10:311.011:091.15:190.35:28-0.16:278:08New Moon25Thu
26Fri11:091.011:481.15:560.46:050.06:278:08Waxing Crescent26Fri
27Sat11:481.06:340.46:420.06:278:09Waxing Crescent27Sat
28Sun12:271.112:291.07:120.47:210.16:278:09Waxing Crescent28Sun
29Mon1:081.11:131.07:540.58:030.26:268:10Waxing Crescent29Mon
30Tue1:501.02:010.98:390.48:520.36:268:10First Quarter30Tue
31Wed2:341.02:541.09:300.49:470.36:268:11First Quarter31Wed
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 5:48 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 36% 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 (36% 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