Tides Today & Tomorrow in Key Biscayne, Biscayne Bay, FL

TIDE TIMES for Sunday, August 23, 2026
The tide is currently falling in Key Biscayne, Biscayne Bay, FL.
Next low tide : in 23m at 12:51 am (0.8 ft)
Next high tide : 6:08 am (1.8 ft)
Sunset today : 7:49 pm
Sunrise tomorrow : 6:57 am
Moon phase : Waxing Gibbous (81% illuminated)
Tide Station Location : Station #8723232
Common Questions About Tides

Key Biscayne, Biscayne Bay, FL Tides - Jan 2002

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue10:472.310:572.14:40-0.55:12-0.17:075:41Waning Gibbous1Tue
2Wed11:352.311:512.15:31-0.46:05-0.17:075:42Waning Gibbous2Wed
3Thu12:252.26:25-0.37:00-0.17:075:42Waning Gibbous3Thu
4Fri12:472.11:162.17:23-0.27:58-0.27:075:43Third Quarter4Fri
5Sat1:472.02:102.18:24-0.19:00-0.27:085:44Third Quarter5Sat
6Sun2:502.03:082.09:280.110:01-0.27:085:44Third Quarter6Sun
7Mon3:562.04:081.910:330.111:02-0.37:085:45Third Quarter7Mon
8Tue5:012.05:091.911:340.211:59-0.37:085:46Waning Crescent8Tue
9Wed6:022.06:071.912:320.17:085:47Waning Crescent9Wed
10Thu6:582.07:021.912:53-0.31:250.17:085:47Waning Crescent10Thu
11Fri7:482.17:521.91:44-0.42:150.17:085:48New Moon11Fri
12Sat8:342.18:371.92:31-0.43:010.17:085:49New Moon12Sat
13Sun9:162.19:201.93:16-0.43:440.07:085:50New Moon13Sun
14Mon9:562.010:011.93:59-0.34:260.07:085:50New Moon14Mon
15Tue10:342.010:401.84:40-0.35:070.07:085:51Waxing Crescent15Tue
16Wed11:101.911:201.85:19-0.25:460.17:085:52Waxing Crescent16Wed
17Thu11:461.95:58-0.16:260.17:085:53Waxing Crescent17Thu
18Fri12:011.712:221.86:370.07:060.17:085:53Waxing Crescent18Fri
19Sat12:431.71:001.77:180.27:480.17:085:54First Quarter19Sat
20Sun1:291.61:411.68:030.38:330.17:085:55First Quarter20Sun
21Mon2:191.62:261.68:540.39:240.17:075:56First Quarter21Mon
22Tue3:141.63:181.59:520.410:190.17:075:56First Quarter22Tue
23Wed4:151.64:161.510:520.411:150.07:075:57First Quarter23Wed
24Thu5:171.75:171.611:500.37:075:58Waxing Gibbous24Thu
25Fri6:171.86:181.712:10-0.212:450.27:065:59Waxing Gibbous25Fri
26Sat7:121.97:151.81:04-0.31:370.17:065:59Waxing Gibbous26Sat
27Sun8:042.18:081.91:56-0.52:28-0.17:066:00Full Moon27Sun
28Mon8:532.29:012.12:47-0.63:17-0.27:056:01Full Moon28Mon
29Tue9:402.39:522.23:37-0.74:06-0.37:056:02Full Moon29Tue
30Wed10:272.310:442.24:27-0.74:56-0.47:056:02Waning Gibbous30Wed
31Thu11:142.311:362.25:18-0.65:47-0.57:046:03Waning Gibbous31Thu
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8723232)

Common Questions About Key Biscayne, Biscayne Bay, FL Tides

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What time does the tide turn (slack tide) in Key Biscayne, Biscayne Bay, FL today?

Slack tide in Key Biscayne, Biscayne Bay, FL is approximately 3:29 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 Key Biscayne, Biscayne Bay, FL?

Key Biscayne, Biscayne Bay, FL is currently in a spring phase. Tonight's moon is 81% 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 Key Biscayne, Biscayne 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 Key Biscayne, Biscayne Bay, FL?

Tide predictions for Key Biscayne, Biscayne 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 Key Biscayne, Biscayne Bay, FL?

Tide data for Key Biscayne, Biscayne Bay, FL is sourced from NOAA Station #8723232. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8723232.

What is the moon phase in Key Biscayne, Biscayne Bay, FL tonight?

Tonight the moon over Key Biscayne, Biscayne Bay, FL is Waxing Gibbous (81% illuminated). This places Key Biscayne, Biscayne 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