Tides Today & Tomorrow in Southwest Harbor, ME

TIDE TIMES for Friday, June 19, 2026
The tide is currently falling in Southwest Harbor, ME.

Next low tide : in 1h 12m at 8:50 pm (0.5 ft)
Next high tide (tomorrow) : 3:25 am (11.4 ft)
Sunset today : 8:20 pm
Sunrise tomorrow : 4:49 am
Moon phase : Waxing Crescent (27% illuminated)
Tide Station Location : Station #8413564
Common Questions About Tides

Featured Local Businesses

A red hull lobster yacht cruising in calm water

John Williams Boat Company

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Southwest Harbor, ME Tides - Mar 2013

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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	Fri	12:32	11.4	12:56	11.0	6:21	-0.6	6:39	-0.3	6:09	5:21		1	Fri
2	Sat	1:16	11.4	1:44	10.7	7:08	-0.6	7:26	-0.1	6:07	5:22		2	Sat
3	Sun	2:04	11.3	2:37	10.3	8:00	-0.4	8:18	0.3	6:06	5:24		3	Sun
4	Mon	2:59	11.1	3:37	9.9	8:59	-0.1	9:18	0.6	6:04	5:25		4	Mon
5	Tue	4:01	10.8	4:44	9.6	10:04	0.0	10:25	0.8	6:02	5:26		5	Tue
6	Wed	5:09	10.7	5:54	9.6	11:14	0.1	11:36	0.7	6:00	5:28		6	Wed
7	Thu	6:19	10.8	7:02	9.9			12:22	-0.1	5:59	5:29		7	Thu
8	Fri	7:26	11.0	8:04	10.4	12:45	0.4	1:25	-0.4	5:57	5:30		8	Fri
9	Sat	8:26	11.4	8:59	10.9	1:47	0.0	2:21	-0.7	5:55	5:31		9	Sat
10	Sun	10:20	11.6	10:49	11.3	3:43	-0.5	4:13	-1.0	6:53	6:33		10	Sun
11	Mon	11:10	11.8	11:35	11.5	4:34	-0.8	5:00	-1.0	6:51	6:34		11	Mon
12	Tue	11:57	11.7			5:22	-1.0	5:44	-0.9	6:50	6:35		12	Tue
13	Wed	12:18	11.6	12:41	11.4	6:07	-0.9	6:26	-0.6	6:48	6:36		13	Wed
14	Thu	1:00	11.4	1:25	11.0	6:50	-0.7	7:08	-0.1	6:46	6:38		14	Thu
15	Fri	1:41	11.2	2:08	10.5	7:33	-0.3	7:49	0.4	6:44	6:39		15	Fri
16	Sat	2:22	10.8	2:52	10.0	8:17	0.1	8:31	0.9	6:42	6:40		16	Sat
17	Sun	3:06	10.3	3:38	9.5	9:02	0.5	9:17	1.3	6:41	6:42		17	Sun
18	Mon	3:52	9.9	4:27	9.0	9:51	1.0	10:06	1.7	6:39	6:43		18	Mon
19	Tue	4:43	9.5	5:22	8.7	10:44	1.3	11:01	2.0	6:37	6:44		19	Tue
20	Wed	5:39	9.3	6:20	8.5	11:41	1.5	11:59	2.0	6:35	6:45		20	Wed
21	Thu	6:38	9.2	7:18	8.6			12:39	1.4	6:33	6:46		21	Thu
22	Fri	7:36	9.4	8:11	8.9	12:57	1.9	1:33	1.2	6:31	6:48		22	Fri
23	Sat	8:29	9.7	8:59	9.4	1:51	1.5	2:22	0.9	6:30	6:49		23	Sat
24	Sun	9:17	10.1	9:43	10.0	2:41	1.0	3:07	0.5	6:28	6:50		24	Sun
25	Mon	10:01	10.5	10:23	10.6	3:25	0.5	3:48	0.1	6:26	6:51		25	Mon
26	Tue	10:43	10.9	11:03	11.1	4:08	0.0	4:28	-0.2	6:24	6:53		26	Tue
27	Wed	11:25	11.2	11:42	11.6	4:50	-0.5	5:08	-0.4	6:22	6:54		27	Wed
28	Thu			12:08	11.4	5:32	-0.9	5:49	-0.5	6:20	6:55		28	Thu
29	Fri	12:24	11.9	12:52	11.4	6:16	-1.1	6:33	-0.5	6:18	6:56		29	Fri
30	Sat	1:08	12.1	1:39	11.2	7:03	-1.2	7:19	-0.3	6:17	6:58		30	Sat
31	Sun	1:56	12.0	2:30	10.9	7:53	-1.0	8:10	-0.1	6:15	6:59		31	Sun
Date		High Tide				Low Tide				Sun		Moon	Date
Date		AM	ft	PM	ft	AM	ft	PM	ft	Rise	Set	Moon	Date

Tidal Data Source: (8413564)

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What time does the tide turn (slack tide) in Southwest Harbor, ME today?

Slack tide in Southwest Harbor, ME is approximately 12:07 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 Southwest Harbor, ME?

Southwest Harbor, ME is currently in a transitional phase. Tonight's moon is 27% 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 Southwest Harbor, ME 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 Southwest Harbor, ME?

Tide predictions for Southwest Harbor, ME 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 Southwest Harbor, ME?

Tide data for Southwest Harbor, ME is sourced from NOAA Station #8413564. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8413564.

What is the moon phase in Southwest Harbor, ME tonight?

Tonight the moon over Southwest Harbor, ME is Waxing Crescent (27% illuminated). This places Southwest Harbor, ME 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

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