Tides Today & Tomorrow in Key Largo, South Sound, FL

TIDE TIMES for Thursday, July 9, 2026
The tide is currently rising in Key Largo, South Sound, FL.
Next low tide (tomorrow) : 12:28 am (0.2 ft)
Next high tide : in 2h 38m at 5:17 pm (1.5 ft)
Sunset today : 8:15 pm
Sunrise tomorrow : 6:38 am
Moon phase : Waning Crescent (30% illuminated)
Tide Station Location : Station #8723667
Common Questions About Tides

Key Largo, South Sound, FL Tides - Aug 1999

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun12:151.712:361.67:220.07:400.06:488:07Waning Gibbous1Sun
2Mon12:581.71:261.68:090.08:310.16:498:06Waning Gibbous2Mon
3Tue1:431.62:201.69:010.09:280.16:498:05Third Quarter3Tue
4Wed2:341.63:191.69:590.010:300.26:508:05Third Quarter4Wed
5Thu3:311.64:241.611:020.011:360.26:508:04Third Quarter5Thu
6Fri4:341.65:301.712:06-0.16:518:03Waning Crescent6Fri
7Sat5:401.66:351.712:410.21:08-0.16:518:03Waning Crescent7Sat
8Sun6:451.77:341.81:420.22:08-0.26:528:02Waning Crescent8Sun
9Mon7:451.78:291.92:400.13:04-0.26:528:01Waning Crescent9Mon
10Tue8:411.89:191.93:340.03:57-0.26:538:00New Moon10Tue
11Wed9:331.910:071.94:260.04:48-0.26:538:00New Moon11Wed
12Thu10:221.910:511.95:150.05:36-0.26:547:59New Moon12Thu
13Fri11:091.911:341.96:030.06:23-0.16:547:58Waxing Crescent13Fri
14Sat11:551.86:490.07:090.06:547:57Waxing Crescent14Sat
15Sun12:161.812:391.77:350.07:560.16:557:56Waxing Crescent15Sun
16Mon12:561.71:241.68:210.18:430.36:557:56Waxing Crescent16Mon
17Tue1:381.62:111.69:090.29:330.46:567:55First Quarter17Tue
18Wed2:211.53:001.59:590.210:260.46:567:54First Quarter18Wed
19Thu3:081.53:541.510:520.311:220.56:577:53First Quarter19Thu
20Fri4:001.44:511.511:470.36:577:52First Quarter20Fri
21Sat4:571.45:491.512:180.512:410.36:577:51Waxing Gibbous21Sat
22Sun5:551.46:441.51:120.51:320.36:587:50Waxing Gibbous22Sun
23Mon6:511.57:341.62:010.42:190.26:587:49Waxing Gibbous23Mon
24Tue7:421.68:201.72:470.43:030.26:597:48Waxing Gibbous24Tue
25Wed8:291.79:031.83:290.33:450.16:597:48Full Moon25Wed
26Thu9:151.89:441.94:100.24:260.16:597:47Full Moon26Thu
27Fri9:591.810:251.94:500.15:070.07:007:46Full Moon27Fri
28Sat10:441.911:071.95:310.15:500.07:007:45Full Moon28Sat
29Sun11:301.911:491.96:130.06:340.17:017:44Waning Gibbous29Sun
30Mon12:171.96:580.07:220.17:017:43Waning Gibbous30Mon
31Tue12:331.91:081.97:460.08:130.27:017:42Waning Gibbous31Tue
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8723667)

Common Questions About Key Largo, South Sound, FL Tides

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What time does the tide turn (slack tide) in Key Largo, South Sound, FL today?

Slack tide in Key Largo, South Sound, FL is approximately 8:52 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 Key Largo, South Sound, FL?

Key Largo, South Sound, FL is currently in a transitional phase. Tonight's moon is 30% 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 Key Largo, South Sound, 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 Largo, South Sound, FL?

Tide predictions for Key Largo, South Sound, 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 Largo, South Sound, FL?

Tide data for Key Largo, South Sound, FL is sourced from NOAA Station #8723667. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8723667.

What is the moon phase in Key Largo, South Sound, FL tonight?

Tonight the moon over Key Largo, South Sound, FL is Waning Crescent (30% illuminated). This places Key Largo, South Sound, 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