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

TIDE TIMES for Sunday, July 19, 2026
The tide is currently rising in Key Largo, South Sound, FL.
Next low tide (tomorrow) : 9:36 am (0.0 ft)
Next high tide (tomorrow) : in 3h 13m at 2:02 am (1.6 ft)
Sunset today : 8:12 pm
Sunrise tomorrow : 6:43 am
Moon phase : First Quarter (32% illuminated)
Tide Station Location : Station #8723667
Common Questions About Tides

Key Largo, South Sound, FL Tides - Jun 1989

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu7:151.68:061.82:180.12:39-0.36:318:07Waning Crescent1Thu
2Fri8:101.68:591.83:120.03:32-0.46:318:07New Moon2Fri
3Sat9:041.79:511.84:050.04:24-0.46:318:08New Moon3Sat
4Sun9:561.710:401.84:560.05:15-0.36:318:08New Moon4Sun
5Mon10:461.611:281.75:460.06:05-0.36:318:09Waxing Crescent5Mon
6Tue11:361.66:370.06:56-0.26:308:09Waxing Crescent6Tue
7Wed12:151.712:251.57:290.17:47-0.16:308:10Waxing Crescent7Wed
8Thu1:011.61:151.48:210.18:380.06:308:10Waxing Crescent8Thu
9Fri1:461.52:051.49:140.29:320.16:308:10First Quarter9Fri
10Sat2:301.42:581.310:070.210:260.26:308:11First Quarter10Sat
11Sun3:161.43:521.310:580.211:210.36:308:11First Quarter11Sun
12Mon4:021.34:471.311:480.16:318:11First Quarter12Mon
13Tue4:511.35:411.312:140.312:360.16:318:12Waxing Gibbous13Tue
14Wed5:411.36:331.41:040.31:220.16:318:12Waxing Gibbous14Wed
15Thu6:321.37:221.41:520.32:060.06:318:12Waxing Gibbous15Thu
16Fri7:211.38:091.52:360.32:480.06:318:13Waxing Gibbous16Fri
17Sat8:081.48:551.53:190.33:30-0.16:318:13Full Moon17Sat
18Sun8:541.49:401.64:010.24:12-0.16:318:13Full Moon18Sun
19Mon9:401.410:231.64:430.24:54-0.16:318:14Full Moon19Mon
20Tue10:251.511:071.65:250.15:36-0.26:328:14Full Moon20Tue
21Wed11:111.511:501.66:080.16:21-0.26:328:14Waning Gibbous21Wed
22Thu11:591.56:530.17:08-0.16:328:14Waning Gibbous22Thu
23Fri12:341.612:501.57:410.07:59-0.16:328:14Waning Gibbous23Fri
24Sat1:191.61:431.58:330.08:540.06:338:15Third Quarter24Sat
25Sun2:061.62:411.59:28-0.19:540.16:338:15Third Quarter25Sun
26Mon2:571.53:421.510:26-0.110:560.16:338:15Third Quarter26Mon
27Tue3:521.54:461.611:26-0.211:590.16:338:15Third Quarter27Tue
28Wed4:521.55:511.612:26-0.26:348:15Waning Crescent28Wed
29Thu5:541.56:531.61:010.11:25-0.26:348:15Waning Crescent29Thu
30Fri6:561.57:521.72:000.12:22-0.36:348:15Waning Crescent30Fri
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 5:49 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 Largo, South Sound, FL?

Key Largo, South Sound, FL is currently in a transitional phase. Tonight's moon is 32% 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 First Quarter (32% 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