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

TIDE TIMES for Tuesday, August 4, 2026
The tide is currently falling in Key Largo, South Sound, FL.
Next low tide : in 1h 15m at 8:57 pm (0.2 ft)
Next high tide (tomorrow) : 1:57 am (1.5 ft)
Sunset today : 8:04 pm
Sunrise tomorrow : 6:50 am
Moon phase : Third Quarter (66% illuminated)
Tide Station Location : Station #8723667
Common Questions About Tides

Key Largo, South Sound, FL Tides - Sep 1967

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri6:511.67:401.71:570.52:170.27:027:41Waning Crescent1Fri
2Sat7:481.78:281.92:470.43:070.17:027:40Waning Crescent2Sat
3Sun8:401.99:142.03:350.23:550.07:027:39New Moon3Sun
4Mon9:312.09:582.04:210.14:430.07:037:38New Moon4Mon
5Tue10:202.110:422.05:070.05:300.07:037:37New Moon5Tue
6Wed11:102.111:262.05:53-0.16:190.07:047:36Waxing Crescent6Wed
7Thu12:002.16:41-0.17:090.17:047:35Waxing Crescent7Thu
8Fri12:132.012:522.07:32-0.18:020.27:047:34Waxing Crescent8Fri
9Sat1:021.91:482.08:260.08:590.37:057:33First Quarter9Sat
10Sun1:561.82:491.99:260.110:030.47:057:31First Quarter10Sun
11Mon2:571.73:551.810:320.211:110.57:057:30First Quarter11Mon
12Tue4:041.75:041.711:410.27:067:29First Quarter12Tue
13Wed5:151.76:101.812:200.512:470.37:067:28Waxing Gibbous13Wed
14Thu6:211.77:081.81:230.51:470.37:077:27Waxing Gibbous14Thu
15Fri7:201.87:571.82:180.52:400.27:077:26Waxing Gibbous15Fri
16Sat8:101.88:391.93:070.43:260.27:077:25Waxing Gibbous16Sat
17Sun8:541.99:161.93:500.34:080.27:087:24Full Moon17Sun
18Mon9:331.99:511.94:290.34:470.37:087:23Full Moon18Mon
19Tue10:111.910:241.95:050.35:240.37:087:22Full Moon19Tue
20Wed10:471.910:561.85:400.26:000.47:097:21Full Moon20Wed
21Thu11:231.911:291.86:130.36:340.47:097:20Waning Gibbous21Thu
22Fri11:591.86:460.37:090.57:107:19Waning Gibbous22Fri
23Sat12:031.712:381.87:200.47:440.67:107:17Waning Gibbous23Sat
24Sun12:391.71:201.77:570.48:240.77:107:16Waning Gibbous24Sun
25Mon1:191.62:081.78:410.59:130.77:117:15Third Quarter25Mon
26Tue2:071.63:051.69:350.510:140.87:117:14Third Quarter26Tue
27Wed3:051.54:091.610:410.511:240.77:117:13Third Quarter27Wed
28Thu4:141.65:141.711:500.57:127:12Third Quarter28Thu
29Fri5:241.66:141.812:300.712:530.47:127:11Waning Crescent29Fri
30Sat6:281.87:071.91:280.51:500.37:137:10Waning Crescent30Sat
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 11:27 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 66% 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 Third Quarter (66% 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