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

TIDE TIMES for Thursday, July 23, 2026
The tide is currently falling in Key Largo, South Sound, FL.
Next low tide (tomorrow) : in 4h 38m at 12:48 am (0.4 ft)
Next high tide (tomorrow) : 5:26 am (1.3 ft)
Sunset today : 8:11 pm
Sunrise tomorrow : 6:44 am
Moon phase : Waxing Gibbous (71% illuminated)
Tide Station Location : Station #8723667
Common Questions About Tides

Key Largo, South Sound, FL Tides - Sep 1986

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon7:291.68:091.72:390.52:540.37:027:40Waning Crescent1Mon
2Tue8:171.78:501.83:210.43:360.27:027:39New Moon2Tue
3Wed9:021.89:301.84:000.34:150.27:037:38New Moon3Wed
4Thu9:451.810:081.94:380.24:550.17:037:37New Moon4Thu
5Fri10:281.910:461.95:160.15:350.17:037:36New Moon5Fri
6Sat11:121.911:251.95:550.16:170.27:047:35Waxing Crescent6Sat
7Sun11:571.96:360.17:010.27:047:34Waxing Crescent7Sun
8Mon12:061.812:451.97:210.17:490.37:047:33Waxing Crescent8Mon
9Tue12:511.81:381.98:110.18:430.47:057:32First Quarter9Tue
10Wed1:421.72:371.89:090.19:450.57:057:31First Quarter10Wed
11Thu2:411.73:431.810:150.210:540.57:067:30First Quarter11Thu
12Fri3:501.74:541.811:260.27:067:29First Quarter12Fri
13Sat5:031.76:021.812:060.512:360.27:067:28Waxing Gibbous13Sat
14Sun6:141.87:031.91:130.51:400.27:077:27Waxing Gibbous14Sun
15Mon7:171.97:562.02:120.42:370.17:077:26Waxing Gibbous15Mon
16Tue8:122.08:432.03:050.33:280.17:077:25Full Moon16Tue
17Wed9:022.09:252.03:530.24:160.17:087:23Full Moon17Wed
18Thu9:482.110:062.04:380.15:000.27:087:22Full Moon18Thu
19Fri10:312.110:442.05:200.15:430.27:097:21Full Moon19Fri
20Sat11:112.011:211.96:000.16:240.37:097:20Waning Gibbous20Sat
21Sun11:512.011:571.86:400.27:040.47:097:19Waning Gibbous21Sun
22Mon12:311.97:200.27:450.57:107:18Waning Gibbous22Mon
23Tue12:351.71:131.88:010.38:290.67:107:17Waning Gibbous23Tue
24Wed1:151.71:581.78:460.49:170.77:107:16Third Quarter24Wed
25Thu2:001.62:511.69:380.510:150.87:117:15Third Quarter25Thu
26Fri2:531.53:501.610:390.611:190.87:117:14Third Quarter26Fri
27Sat3:551.54:531.611:430.67:127:13Third Quarter27Sat
28Sun5:011.55:531.612:220.812:420.57:127:12Waning Crescent28Sun
29Mon6:041.66:441.71:170.71:340.57:127:11Waning Crescent29Mon
30Tue6:591.77:301.82:040.62:210.47:137:10Waning Crescent30Tue
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8723667)

Common Questions About Key Largo, South Sound, FL Tides

Show All
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 3:07 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 71% 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 Waxing Gibbous (71% 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