Tides Today & Tomorrow in Key West, FL

TIDE TIMES for Sunday, June 21, 2026
The tide is currently falling in Key West, FL.
Next low tide : in 3h 36m at 10:02 pm (0.3 ft)
Next high tide (tomorrow) : 4:45 am (1.5 ft)
Sunset today : 8:18 pm
Sunrise tomorrow : 6:39 am
Moon phase : First Quarter (48% illuminated)
Tide Station Location : Station #8724580
Common Questions About Tides

Key West, FL Tides - Oct 2018

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon2:152.24:041.49:110.48:231.07:197:14Third Quarter1Mon
2Tue3:172.25:311.410:250.59:381.17:197:13Third Quarter2Tue
3Wed4:372.16:471.511:390.511:021.17:197:12Third Quarter3Wed
4Thu6:032.27:431.612:440.57:207:11Waning Crescent4Thu
5Fri7:182.38:271.812:201.01:400.57:207:10Waning Crescent5Fri
6Sat8:222.39:071.91:270.82:270.57:217:09Waning Crescent6Sat
7Sun9:182.49:442.12:250.63:090.57:217:08New Moon7Sun
8Mon10:102.310:202.23:180.53:480.67:217:07New Moon8Mon
9Tue10:582.210:562.34:070.34:250.77:227:06New Moon9Tue
10Wed11:442.111:322.44:540.35:010.77:227:05New Moon10Wed
11Thu12:282.05:400.35:370.87:237:04Waxing Crescent11Thu
12Fri12:082.41:121.86:280.36:140.97:237:03Waxing Crescent12Fri
13Sat12:452.31:581.67:180.46:531.07:247:02Waxing Crescent13Sat
14Sun1:252.22:491.58:130.57:371.17:247:01Waxing Crescent14Sun
15Mon2:102.13:541.49:140.68:341.27:257:00First Quarter15Mon
16Tue3:032.05:201.410:210.79:521.27:256:59First Quarter16Tue
17Wed4:111.96:391.511:260.711:131.27:266:58First Quarter17Wed
18Thu5:291.97:261.612:250.77:266:57First Quarter18Thu
19Fri6:401.97:581.712:211.11:140.77:266:57Waxing Gibbous19Fri
20Sat7:382.08:271.81:161.01:540.77:276:56Waxing Gibbous20Sat
21Sun8:282.08:561.92:020.92:280.77:286:55Waxing Gibbous21Sun
22Mon9:132.09:252.12:430.72:590.77:286:54Waxing Gibbous22Mon
23Tue9:562.09:562.23:210.63:290.77:296:53Full Moon23Tue
24Wed10:392.010:282.33:580.43:580.87:296:53Full Moon24Wed
25Thu11:232.011:022.34:370.34:290.87:306:52Full Moon25Thu
26Fri12:091.95:190.25:020.87:306:51Waning Gibbous26Fri
27Sat12:561.76:040.25:380.87:316:50Waning Gibbous27Sat
28Sun12:192.41:481.66:540.26:180.97:316:50Waning Gibbous28Sun
29Mon1:042.32:471.57:510.27:071.07:326:49Waning Gibbous29Mon
30Tue1:572.23:561.58:560.38:111.07:326:48Third Quarter30Tue
31Wed3:042.15:111.510:070.49:351.17:336:47Third Quarter31Wed
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8724580)

Common Questions About Key West, FL Tides

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

Slack tide in Key West, FL is approximately 1:23 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 West, FL?

Key West, FL is currently in a neap phase. Tonight's moon is 48% 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 minimum.

What datum are Key West, 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 West, FL?

Tide predictions for Key West, 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 West, FL?

Tide data for Key West, FL is sourced from NOAA Station #8724580. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8724580.

What is the moon phase in Key West, FL tonight?

Tonight the moon over Key West, FL is First Quarter (48% illuminated). This places Key West, FL in a neap tide cycle, so tidal ranges are near their weekly minimum 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