Tides Today & Tomorrow in Southwest Harbor, ME

TIDE TIMES for Friday, October 16, 2026
The tide is currently rising in Southwest Harbor, ME.

Next low tide : 9:16 pm (1.2 ft)
Next high tide : in 24m at 3:13 pm (9.9 ft)
Sunset today : 5:47 pm
Sunrise tomorrow : 6:49 am
Moon phase : First Quarter (31% illuminated)
Tide Station Location : Station #8413564
Common Questions About Tides

Featured Local Businesses

Clark Point Gallery

Hamilton Marine - Southwest Harbor

A red hull lobster yacht cruising in calm water

John Williams Boat Company

Bowden Marine

Billings Diesel & Marine

Southwest Harbor, ME Tides - May 1842

< Apr 1842

Print this Tide Chart

Jun 1842 >

Date		High Tide				Low Tide				Sun		Moon	Date
Date		AM	ft	PM	ft	AM	ft	PM	ft	Rise	Set	Moon	Date
1	Sun	3:01	10.0	3:45	9.1	9:04	0.9	9:23	2.0	4:28	6:40		1	Sun
2	Mon	3:58	9.6	4:40	9.0	9:58	1.3	10:21	2.1	4:26	6:41		2	Mon
3	Tue	4:56	9.3	5:35	9.0	10:53	1.5	11:19	2.0	4:25	6:42		3	Tue
4	Wed	5:54	9.2	6:28	9.2	11:45	1.5			4:23	6:43		4	Wed
5	Thu	6:48	9.2	7:15	9.5	12:14	1.7	12:35	1.5	4:22	6:45		5	Thu
6	Fri	7:39	9.3	7:59	9.9	1:05	1.4	1:20	1.4	4:21	6:46		6	Fri
7	Sat	8:25	9.5	8:39	10.3	1:51	1.0	2:02	1.2	4:19	6:47		7	Sat
8	Sun	9:08	9.7	9:17	10.6	2:34	0.6	2:42	1.1	4:18	6:48		8	Sun
9	Mon	9:49	9.8	9:55	10.9	3:14	0.3	3:21	1.1	4:17	6:49		9	Mon
10	Tue	10:28	10.0	10:33	11.2	3:53	0.0	3:59	1.0	4:15	6:50		10	Tue
11	Wed	11:09	10.1	11:13	11.4	4:33	-0.2	4:39	1.0	4:14	6:52		11	Wed
12	Thu	11:51	10.1	11:57	11.5	5:14	-0.4	5:22	0.9	4:13	6:53		12	Thu
13	Fri			12:36	10.1	5:59	-0.4	6:08	1.0	4:12	6:54		13	Fri
14	Sat	12:44	11.4	1:25	10.1	6:47	-0.4	6:59	1.0	4:11	6:55		14	Sat
15	Sun	1:35	11.3	2:18	10.1	7:38	-0.3	7:54	1.0	4:10	6:56		15	Sun
16	Mon	2:31	11.1	3:15	10.2	8:34	-0.1	8:55	1.0	4:09	6:57		16	Mon
17	Tue	3:32	10.8	4:15	10.3	9:32	0.0	10:00	0.8	4:07	6:58		17	Tue
18	Wed	4:37	10.6	5:17	10.6	10:33	0.1	11:06	0.6	4:06	6:59		18	Wed
19	Thu	5:42	10.5	6:17	11.0	11:33	0.1			4:05	7:00		19	Thu
20	Fri	6:47	10.5	7:14	11.4	12:11	0.2	12:32	0.1	4:04	7:02		20	Fri
21	Sat	7:48	10.6	8:08	11.7	1:11	-0.3	1:28	0.1	4:04	7:03		21	Sat
22	Sun	8:44	10.7	9:00	11.9	2:08	-0.7	2:21	0.1	4:03	7:04		22	Sun
23	Mon	9:37	10.7	9:49	12.0	3:00	-0.9	3:12	0.2	4:02	7:05		23	Mon
24	Tue	10:27	10.7	10:36	11.9	3:50	-1.0	4:01	0.4	4:01	7:06		24	Tue
25	Wed	11:15	10.5	11:22	11.7	4:38	-0.9	4:48	0.6	4:00	7:07		25	Wed
26	Thu			12:01	10.3	5:24	-0.6	5:34	0.9	3:59	7:08		26	Thu
27	Fri	12:07	11.3	12:47	10.0	6:09	-0.2	6:21	1.2	3:59	7:09		27	Fri
28	Sat	12:53	10.9	1:33	9.8	6:55	0.2	7:07	1.5	3:58	7:09		28	Sat
29	Sun	1:39	10.5	2:19	9.5	7:40	0.6	7:55	1.7	3:57	7:10		29	Sun
30	Mon	2:27	10.1	3:06	9.4	8:26	0.9	8:45	1.9	3:57	7:11		30	Mon
31	Tue	3:17	9.7	3:55	9.3	9:13	1.2	9:38	2.0	3:56	7:12		31	Tue
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)

www.USHarbors.com

The US Harbors tide chart design is protected by copyright. It may be printed for personal use only.
Any commercial use, modification, redistribution, or repackaging without written permission is strictly prohibited.

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 31% 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 First Quarter (31% 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

Quietly Sophisticated: The Hood 42 LM

By US Harbors At first glance, the Hood 42 LM might be confused for a boat that worked the Maine coast fifty years ago, but upon further inspection, the fifteen coats of Epifanes varnish over mahogany and custom-cast bronze hardware reveal that this boat was built for cruising. Beyond the… Learn More

Coastal Stories See All

A freediver from the Papahānaumokuākea Marine Debris Project works to carefully remove a ghost net from the reef at Kamokuokamohoali‘i (Maro Reef) in Hawaii. (Image credit: Andrew Sullivan-Hawkins/Papahānaumokuākea Marine Debris Project (Under permit # PMNM-2024-003))

Large-scale Marine Debris: 4 Ways to Clean up the Big Stuff

By fisheries.noaa.gov, fisheries.noaa.gov. Marine debris is a challenging problem. Across the country, NOAA and partners… More

Ocean Awareness Ocean Science

Map showing sea surface height anomalies using Darker reds to show sea levels higher than normal, while darker blues show heights below normal

Kelvin Waves, Explained

By fisheries.noaa.gov, fisheries.noaa.gov. You may be hearing a lot about Kelvin waves in the news.… More

Coastal News Extreme Weather Ocean Science

Southern Resident killer whales swim just off Seattle’s shore. NOAA experts anticipate that the West Coast and the Pacific Islands will feel the effects of the 2026–2027 El Niño event most directly. Credit: NOAA Northwest Fisheries Science Center; taken under NOAA permit #781-1824

How Will El Niño Affect Your Local Fisheries?

By fisheries.noaa.gov, fisheries.noaa.gov. What does El Niño mean for U.S. fisheries and marine life? What… More

Coastal News Extreme Weather Ocean Science

NOAA's flood inundation map (left) depicting the forecast for flooding extent in New London, Wisconsin, and a photo of flooded streets in New London (right), dated April 17, 2026. (Image credit: NOAA NWS)

NOAA’s flood mapping tool now covers nearly 100% of U.S.

By fisheries.noaa.gov, fisheries.noaa.gov. NOAA’s National Weather Service announced today that Flood Inundation Mapping (FIM), a… More

Coastal News Extreme Weather Weather & Tides

Meet Hawaii Fish Company, Tilapia Farmers in Hawaiʻi

By fisheries.noaa.gov, fisheries.noaa.gov. For husband and wife duo Ron and and Estralita Weidenbach, fish farming… More

Coastal Life Marine Economy

NOAA Fisheries and Sea Quester Farms partnered up to evaluate if kelp farms provide habitat for marine life in Alaska. Pictured here is one of Sea Quester’s farms in southeast Alaska near Juneau. Credit: Hatch Blue, Alaska Mariculture Cluster

Kelp Farms and Marine Life Co-Exist in Southeast Alaska

By fisheries.noaa.gov, fisheries.noaa.gov. Marine aquaculture, or mariculture, provides economic opportunities for coastal communities in Alaska… More

Coastal Life Environment Food Ocean Science