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

TIDE TIMES for Wednesday, July 1, 2026
The tide is currently rising in Grassy Key, north side, Florida Bay, FL.
Next low tide (tomorrow) : 12:49 am (-0.2 ft)
Next high tide : in 2h 28m at 4:52 pm (1.3 ft)
Sunset today : 8:17 pm
Sunrise tomorrow : 6:38 am
Moon phase : Full Moon (97% illuminated)
Tide Station Location : Station #8723921
Common Questions About Tides

Grassy Key, north side, Florida Bay, FL Tides - Mar 2054

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun9:320.58:590.93:57-0.13:310.36:456:26Third Quarter1Sun
2Mon11:140.510:120.95:09-0.14:380.46:446:26Third Quarter2Mon
3Tue12:320.56:19-0.15:490.46:436:27Waning Crescent3Tue
4Wed1:200.67:21-0.16:530.46:426:27Waning Crescent4Wed
5Thu12:250.91:540.68:10-0.17:470.36:416:28Waning Crescent5Thu
6Fri1:141.02:220.78:49-0.28:330.26:416:28Waning Crescent6Fri
7Sat1:571.02:480.89:23-0.29:120.16:406:29New Moon7Sat
8Sun3:361.14:140.810:53-0.210:480.07:397:29New Moon8Sun
9Mon4:141.14:420.911:22-0.111:23-0.17:387:30New Moon9Mon
10Tue4:521.15:111.011:50-0.111:58-0.17:377:30New Moon10Tue
11Wed5:301.05:411.012:17-0.17:367:31Waxing Crescent11Wed
12Thu6:091.06:121.012:36-0.212:460.07:357:31Waxing Crescent12Thu
13Fri6:510.96:441.11:17-0.21:170.17:347:31Waxing Crescent13Fri
14Sat7:370.87:201.12:03-0.21:510.27:337:32Waxing Crescent14Sat
15Sun8:310.78:031.12:58-0.22:310.37:327:32First Quarter15Sun
16Mon9:410.68:591.04:02-0.23:230.47:317:33First Quarter16Mon
17Tue11:100.510:161.05:14-0.24:320.47:307:33First Quarter17Tue
18Wed12:330.66:29-0.25:540.47:297:34First Quarter18Wed
19Thu1:330.77:37-0.27:120.37:287:34Waxing Gibbous19Thu
20Fri1:011.12:210.88:36-0.38:210.27:277:35Waxing Gibbous20Fri
21Sat2:071.23:020.99:26-0.39:200.07:267:35Waxing Gibbous21Sat
22Sun3:051.33:411.010:10-0.210:14-0.27:257:35Full Moon22Sun
23Mon3:581.34:181.110:51-0.211:04-0.37:237:36Full Moon23Mon
24Tue4:471.24:551.211:30-0.111:53-0.47:227:36Full Moon24Tue
25Wed5:341.15:321.212:080.07:217:37Waning Gibbous25Wed
26Thu6:201.06:091.212:41-0.412:460.17:207:37Waning Gibbous26Thu
27Fri7:060.96:471.21:30-0.41:240.27:197:38Waning Gibbous27Fri
28Sat7:530.87:271.12:22-0.32:050.37:187:38Waning Gibbous28Sat
29Sun8:460.78:121.13:18-0.22:520.47:177:38Third Quarter29Sun
30Mon9:550.69:061.04:20-0.13:510.57:167:39Third Quarter30Mon
31Tue11:280.610:170.95:260.05:050.67:157:39Third Quarter31Tue
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 8:50 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 Grassy Key, north side, Florida Bay, FL?

Grassy Key, north side, Florida Bay, FL is currently in a spring phase. Tonight's moon is 97% 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 near their weekly maximum.

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 Full Moon (97% illuminated). This places Grassy Key, north side, Florida Bay, FL in a spring tide cycle, so tidal ranges are near their weekly maximum 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