Tides Today & Tomorrow in Grassy Key, north side, Florida Bay, FL

TIDE TIMES for Wednesday, June 24, 2026
The tide is currently rising in Grassy Key, north side, Florida Bay, FL.
Next low tide (tomorrow) : 7:02 am (0.6 ft)
Next high tide (tomorrow) : in 3h 34m at 1:45 am (0.7 ft)
Sunset today : 8:16 pm
Sunrise tomorrow : 6:36 am
Moon phase : Waxing Gibbous (76% illuminated)
Tide Station Location : Station #8723921
Common Questions About Tides

Grassy Key, north side, Florida Bay, FL Tides - May 2011

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun3:270.92:571.29:380.410:37-0.16:487:53New Moon1Sun
2Mon4:060.93:281.310:080.411:12-0.26:477:53New Moon2Mon
3Tue4:440.84:001.310:370.411:47-0.36:467:54New Moon3Tue
4Wed5:230.84:351.311:050.46:467:54New Moon4Wed
5Thu6:040.85:111.312:23-0.311:35 AM0.56:457:55Waxing Crescent5Thu
6Fri6:460.85:491.31:02-0.312:080.56:447:55Waxing Crescent6Fri
7Sat7:320.76:311.31:45-0.312:470.56:447:56Waxing Crescent7Sat
8Sun8:210.77:191.22:33-0.21:360.66:437:56Waxing Crescent8Sun
9Mon9:140.88:181.23:26-0.12:410.66:427:57First Quarter9Mon
10Tue10:100.89:311.14:220.04:050.66:427:57First Quarter10Tue
11Wed11:050.910:571.05:180.15:310.56:417:58First Quarter11Wed
12Thu11:551.06:120.26:480.36:417:58Waxing Gibbous12Thu
13Fri12:211.012:411.27:030.37:550.06:407:59Waxing Gibbous13Fri
14Sat1:351.01:261.37:510.38:55-0.26:407:59Waxing Gibbous14Sat
15Sun2:390.92:111.48:370.39:49-0.46:398:00Waxing Gibbous15Sun
16Mon3:370.92:561.59:220.310:40-0.66:398:00Full Moon16Mon
17Tue4:290.93:421.510:060.311:30-0.66:388:01Full Moon17Tue
18Wed5:190.84:291.510:510.36:388:02Full Moon18Wed
19Thu6:060.85:161.512:18-0.611:36 AM0.36:378:02Waning Gibbous19Thu
20Fri6:520.86:041.41:06-0.512:230.46:378:03Waning Gibbous20Fri
21Sat7:380.86:531.31:56-0.31:160.46:378:03Waning Gibbous21Sat
22Sun8:260.87:441.22:47-0.22:170.56:368:04Waning Gibbous22Sun
23Mon9:160.88:391.13:380.03:300.66:368:04Third Quarter23Mon
24Tue10:080.99:440.94:300.24:490.66:368:05Third Quarter24Tue
25Wed10:590.910:590.85:190.36:040.56:358:05Third Quarter25Wed
26Thu11:451.06:060.47:100.46:358:05Third Quarter26Thu
27Fri12:160.812:251.16:500.58:070.36:358:06Waning Crescent27Fri
28Sat1:230.81:021.17:320.58:560.16:358:06Waning Crescent28Sat
29Sun2:180.71:391.28:100.59:38-0.16:348:07Waning Crescent29Sun
30Mon3:060.72:151.38:470.510:17-0.26:348:07Waning Crescent30Mon
31Tue3:490.72:531.39:220.510:54-0.36:348:08New Moon31Tue
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8723921)

Common Questions About Grassy Key, north side, Florida Bay, FL Tides

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What time does the tide turn (slack tide) in Grassy Key, north side, Florida Bay, FL today?

Slack tide in Grassy Key, north side, Florida Bay, FL is approximately 4:23 am — 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 Grassy Key, north side, Florida Bay, FL?

Grassy Key, north side, Florida Bay, FL is currently in a transitional phase. Tonight's moon is 76% 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 Grassy Key, north side, Florida Bay, 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 Grassy Key, north side, Florida Bay, FL?

Tide predictions for Grassy Key, north side, Florida Bay, 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 Grassy Key, north side, Florida Bay, FL?

Tide data for Grassy Key, north side, Florida Bay, FL is sourced from NOAA Station #8723921. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8723921.

What is the moon phase in Grassy Key, north side, Florida Bay, FL tonight?

Tonight the moon over Grassy Key, north side, Florida Bay, FL is Waxing Gibbous (76% illuminated). This places Grassy Key, north side, Florida Bay, 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