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

TIDE TIMES for Friday, September 11, 2026
The tide is currently falling in Key Largo, South Sound, FL.

Next low tide : in 1h 10m at 4:36 am (0.0 ft)
Next high tide : 9:48 am (2.1 ft)
Sunset today : 7:30 pm
Sunrise tomorrow : 7:06 am
Moon phase : New Moon (0% illuminated)
Tide Station Location : Station #8723667
Common Questions About Tides

Key Largo, South Sound, FL Tides - Sep 2026

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Date		High Tide				Low Tide				Sun		Moon	Date
Date		AM	ft	PM	ft	AM	ft	PM	ft	Rise	Set	Moon	Date
1	Tue	12:04	1.8	12:43	1.8	7:18	0.1	7:45	0.3	7:02	7:40		1	Tue
2	Wed	12:47	1.7	1:34	1.8	8:07	0.1	8:37	0.4	7:02	7:39		2	Wed
3	Thu	1:36	1.7	2:32	1.7	9:03	0.1	9:38	0.5	7:03	7:38		3	Thu
4	Fri	2:34	1.7	3:38	1.7	10:08	0.2	10:47	0.5	7:03	7:37		4	Fri
5	Sat	3:42	1.6	4:49	1.7	11:20	0.2	11:59	0.5	7:04	7:36		5	Sat
6	Sun	4:56	1.7	5:57	1.8			12:30	0.2	7:04	7:35		6	Sun
7	Mon	6:08	1.7	6:58	1.8	1:07	0.4	1:35	0.1	7:04	7:34		7	Mon
8	Tue	7:12	1.8	7:52	1.9	2:07	0.3	2:33	0.1	7:05	7:33		8	Tue
9	Wed	8:09	2.0	8:40	2.0	3:01	0.2	3:26	0.1	7:05	7:32		9	Wed
10	Thu	9:01	2.0	9:24	2.0	3:50	0.1	4:14	0.1	7:05	7:31		10	Thu
11	Fri	9:48	2.1	10:06	2.0	4:36	0.0	5:00	0.1	7:06	7:30		11	Fri
12	Sat	10:32	2.1	10:46	2.0	5:20	0.0	5:44	0.2	7:06	7:29		12	Sat
13	Sun	11:15	2.0	11:25	1.9	6:03	0.0	6:27	0.2	7:07	7:28		13	Sun
14	Mon	11:57	2.0			6:44	0.1	7:09	0.3	7:07	7:26		14	Mon
15	Tue	12:03	1.8	12:38	1.9	7:26	0.2	7:52	0.5	7:07	7:25		15	Tue
16	Wed	12:42	1.7	1:22	1.7	8:10	0.3	8:38	0.6	7:08	7:24		16	Wed
17	Thu	1:24	1.6	2:09	1.7	8:58	0.4	9:28	0.7	7:08	7:23		17	Thu
18	Fri	2:10	1.6	3:02	1.6	9:53	0.5	10:28	0.7	7:08	7:22		18	Fri
19	Sat	3:04	1.5	4:02	1.5	10:54	0.5	11:32	0.8	7:09	7:21		19	Sat
20	Sun	4:07	1.5	5:05	1.6	11:57	0.5			7:09	7:20		20	Sun
21	Mon	5:13	1.5	6:02	1.6	12:34	0.7	12:54	0.5	7:09	7:19		21	Mon
22	Tue	6:13	1.6	6:52	1.7	1:27	0.6	1:45	0.5	7:10	7:18		22	Tue
23	Wed	7:07	1.7	7:36	1.8	2:12	0.5	2:30	0.4	7:10	7:17		23	Wed
24	Thu	7:55	1.8	8:17	1.9	2:53	0.4	3:11	0.4	7:11	7:16		24	Thu
25	Fri	8:39	1.9	8:57	1.9	3:31	0.3	3:51	0.3	7:11	7:15		25	Fri
26	Sat	9:23	2.0	9:36	2.0	4:09	0.2	4:31	0.3	7:11	7:13		26	Sat
27	Sun	10:06	2.1	10:16	2.0	4:47	0.1	5:12	0.3	7:12	7:12		27	Sun
28	Mon	10:50	2.1	10:57	2.0	5:27	0.1	5:54	0.3	7:12	7:11		28	Mon
29	Tue	11:36	2.1	11:41	1.9	6:10	0.1	6:39	0.4	7:13	7:10		29	Tue
30	Wed			12:25	2.0	6:57	0.1	7:28	0.4	7:13	7:09		30	Wed
Date		High Tide				Low Tide				Sun		Moon	Date
Date		AM	ft	PM	ft	AM	ft	PM	ft	Rise	Set	Moon	Date

Tidal Data Source: (8723667)

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When is the lowest tide this week in Key Largo, South Sound, FL?

The lowest tide this week in Key Largo, South Sound, FL is 0.0 ft on Saturday, Sep 12 at 5:20 am.

When is the highest tide this week in Key Largo, South Sound, FL?

The highest tide this week in Key Largo, South Sound, FL is 2.1 ft on Friday, Sep 11 at 9:48 am — worth noting for launching your boat and being alert for possible high tide flooding.

Is this week a spring tide or neap tide in Key Largo, South Sound, FL?

Key Largo, South Sound, FL is currently in a spring phase. Tonight's moon is 0% 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 maximum.

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 time is high tide in Key Largo, South Sound, FL today?

High tides in Key Largo, South Sound, FL today: 9:48 am (2.1 ft), 10:06 pm (2.0 ft).

What time is low tide in Key Largo, South Sound, FL today?

Low tides in Key Largo, South Sound, FL today: 4:36 am (0.0 ft), 5:00 pm (0.1 ft).

What is the tidal range in Key Largo, South Sound, FL today?

Today's tidal range in Key Largo, South Sound, FL is 2.0 ft — the difference between the day's highest and lowest water level. This month's average daily range is about 1.6 ft, so today's swing is typical.

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

Tonight the moon over Key Largo, South Sound, FL is New Moon (0% illuminated). This places Key Largo, South Sound, FL in a spring tide cycle, so tidal ranges are near their weekly maximum this week.

What type of tides does Key Largo, South Sound, FL have — semi-diurnal, diurnal, or mixed?

Key Largo, South Sound, FL has semi-diurnal tides — two high tides and two low tides roughly every 24 hours and 50 minutes, with similar heights.

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

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