Tides Today & Tomorrow in St. Petersburg, FL

TIDE TIMES for Tuesday, August 18, 2026
The tide is currently rising in St. Petersburg, FL.
Next low tide : 11:57 pm (1.3 ft)
Next high tide : in 5h 21m at 7:36 pm (1.6 ft)
Sunset today : 8:06 pm
Sunrise tomorrow : 7:02 am
Moon phase : First Quarter (36% illuminated)
Tide Station Location : Station #8726520
Common Questions About Tides

St. Petersburg, FL Tides - Sep 1925

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue2:521.91:072.86:591.48:390.27:097:51Full Moon1Tue
2Wed3:171.92:012.87:521.39:180.37:097:50Full Moon2Wed
3Thu3:381.92:532.88:441.19:540.57:097:49Full Moon3Thu
4Fri4:002.03:452.69:350.910:280.77:107:48Waning Gibbous4Fri
5Sat4:232.14:382.410:260.810:590.97:107:47Waning Gibbous5Sat
6Sun4:512.25:342.211:180.711:291.17:117:46Waning Gibbous6Sun
7Mon5:222.36:341.912:140.67:117:45Waning Gibbous7Mon
8Tue5:582.37:501.71:160.67:127:44Third Quarter8Tue
9Wed6:402.39:521.612:261.42:270.67:127:42Third Quarter9Wed
10Thu7:332.312:561.63:450.67:137:41Third Quarter10Thu
11Fri8:412.25:020.57:137:40Third Quarter11Fri
12Sat1:211.810:04 AM2.24:081.76:050.57:147:39Waning Crescent12Sat
13Sun1:421.911:19 AM2.35:211.66:540.57:147:38Waning Crescent13Sun
14Mon2:011.912:172.46:161.57:320.57:157:37Waning Crescent14Mon
15Tue2:201.91:022.56:591.48:040.57:157:35Waning Crescent15Tue
16Wed2:352.01:412.57:381.38:330.67:157:34New Moon16Wed
17Thu2:472.02:192.58:141.19:000.77:167:33New Moon17Thu
18Fri3:002.12:582.58:511.09:270.87:167:32New Moon18Fri
19Sat3:172.23:402.49:300.89:540.97:177:31New Moon19Sat
20Sun3:412.34:262.310:110.710:211.17:177:30Waxing Crescent20Sun
21Mon4:082.45:172.110:560.610:471.27:187:28Waxing Crescent21Mon
22Tue4:392.56:162.011:470.511:141.37:187:27Waxing Crescent22Tue
23Wed5:152.57:291.812:480.47:197:26Waxing Crescent23Wed
24Thu5:582.59:221.72:010.47:197:25First Quarter24Thu
25Fri6:542.512:151.63:210.47:207:24First Quarter25Fri
26Sat8:092.54:390.37:207:23First Quarter26Sat
27Sun12:441.88:39 AM2.42:471.74:460.36:216:21Waxing Gibbous27Sun
28Mon12:131.910:05 AM2.54:091.65:410.36:216:20Waxing Gibbous28Mon
29Tue12:382.011:16 AM2.65:131.46:260.46:226:19Waxing Gibbous29Tue
30Wed12:592.112:142.66:071.27:050.66:226:18Full Moon30Wed
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8726520)

Common Questions About St. Petersburg, FL Tides

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

Slack tide in St. Petersburg, FL is approximately 9:46 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. Petersburg, FL?

St. Petersburg, 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. Petersburg, 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. Petersburg, FL?

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

Tide data for St. Petersburg, FL is sourced from NOAA Station #8726520. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8726520.

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

Tonight the moon over St. Petersburg, FL is First Quarter (36% illuminated). This places St. Petersburg, 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