Nearby Harbors
44.2759’ N, 68.3187’ W

Southwest Harbor, ME

59°
H 60°
L 43°
ENE
10mph
Low tide
2:42 pm
Photo Credits

Tides Today & Tomorrow in Southwest Harbor, ME

TIDE TIMES for Wednesday, September 23, 2026
The tide is currently falling in Southwest Harbor, ME.
Next low tide : in 3h 50m at 2:42 pm (1.5 ft)
Next high tide : 9:18 pm (10.2 ft)
Sunset today : 6:29 pm
Sunrise tomorrow : 6:21 am
Moon phase : Waxing Gibbous (90% illuminated)
Tide Station Location : Station #8413564
Common Questions About Tides

Featured Local Businesses

Charles M Young Painting of Maine Coast

Clark Point Gallery
A red hull lobster yacht cruising in calm water

John Williams Boat Company
Hamilton Marine - Southwest Harbor

Hamilton Marine - Southwest Harbor
Bowden Marine

Bowden Marine
Billings Diesel & Marine - Diesel Service

Billings Diesel & Marine

Southwest Harbor, ME Tides - Feb 1885

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun11:4212.55:06-1.15:37-1.76:504:43Waning Gibbous1Sun
2Mon12:1311.712:3312.25:57-1.06:26-1.36:494:44Waning Gibbous2Mon
3Tue1:0211.51:2311.66:48-0.77:15-0.86:484:46Waning Gibbous3Tue
4Wed1:5211.22:1510.97:40-0.38:04-0.26:474:47Waning Gibbous4Wed
5Thu2:4310.83:0810.28:340.28:560.46:464:49Third Quarter5Thu
6Fri3:3510.34:059.59:300.69:501.06:444:50Third Quarter6Fri
7Sat4:309.95:049.010:281.010:471.46:434:51Third Quarter7Sat
8Sun5:289.76:058.811:281.111:441.66:424:53Third Quarter8Sun
9Mon6:259.67:038.812:261.16:404:54Waning Crescent9Mon
10Tue7:209.77:568.912:401.51:190.96:394:55Waning Crescent10Tue
11Wed8:1010.08:439.21:321.42:070.66:384:57Waning Crescent11Wed
12Thu8:5410.39:259.52:181.12:500.36:364:58Waning Crescent12Thu
13Fri9:3510.610:039.93:010.83:300.16:355:00New Moon13Fri
14Sat10:1310.810:3910.13:400.64:06-0.16:335:01New Moon14Sat
15Sun10:5011.011:1410.44:160.44:41-0.36:325:02New Moon15Sun
16Mon11:2611.111:4910.64:530.25:15-0.36:305:04New Moon16Mon
17Tue12:0311.15:300.05:51-0.46:295:05Waxing Crescent17Tue
18Wed12:2510.812:4311.06:09-0.16:29-0.36:275:07Waxing Crescent18Wed
19Thu1:0510.91:2610.86:51-0.17:11-0.16:265:08Waxing Crescent19Thu
20Fri1:4811.02:1410.57:38-0.17:580.16:245:09First Quarter20Fri
21Sat2:3710.93:0710.18:310.08:500.36:235:11First Quarter21Sat
22Sun3:3210.84:089.89:310.19:510.66:215:12First Quarter22Sun
23Mon4:3410.75:169.710:370.110:570.66:195:13First Quarter23Mon
24Tue5:4210.86:259.811:460.06:185:15Waxing Gibbous24Tue
25Wed6:5011.07:3110.212:060.512:52-0.46:165:16Waxing Gibbous25Wed
26Thu7:5411.48:3110.71:120.11:53-0.86:145:17Waxing Gibbous26Thu
27Fri8:5211.89:2611.22:13-0.42:49-1.26:135:19Full Moon27Fri
28Sat9:4612.110:1711.63:09-0.83:41-1.46:115:20Full Moon28Sat
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8413564)

www.USHarbors.com

© 2026 US Harbors LLC All rights reserved

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.

Common Questions About Southwest Harbor, ME Tides

Collapse All
Is this week a spring tide or neap tide in Southwest Harbor, ME?

Southwest Harbor, ME is currently in a spring phase. Tonight's moon is 90% 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 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 Gibbous (90% illuminated). This places Southwest Harbor, ME in a spring tide cycle, so tidal ranges are near their weekly maximum 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

Coastal Stories See All

Sablefish farmed in net pens at NOAA's Northwest Fisheries Science Center. Credit: Megan Ewald for NOAA Fisheries.

Managing Genetic Risk in Offshore Aquaculture

By fisheries.noaa.gov, fisheries.noaa.gov. Aquaculture can sustainably produce seafood to complement wild-caught fisheries. However, like all… More

FishingFoodScience

Deep-sea sponges and other invertebrates in a collection basket during a bottom trawl survey. Credit: NOAA Fisheries

Nine Species of Deep-Sea Sponges Discovered in Alaska

By fisheries.noaa.gov, fisheries.noaa.gov. Scientists have discovered nine new species of sponges in the Gulf of… More

Ocean Science

Sugar Creek flows over a dam initially created with beaver dam analogues to help improve habitat for coho salmon and other wildlife. Photo courtesy of Scott River Watershed Council.

Start-Up Beaver Dams Transform Parched California Creeks into Salmon Havens, New Research Finds

By fisheries.noaa.gov, fisheries.noaa.gov. Battered by early gold mining and diminished by logging and diversions,the lower… More

Coastal News

Image Credits: Flickr.com.

Concrete Ships Hiding in Plain Sight: The Forgotten Breakwaters of America's Harbors

By Jordan Hanssen, best4boats. There's a good chance a concrete ship is lurking in your… More

Maritime History

Image Credits: Flickr.com.

Is Offshore Construction Noise Stressing New England's Lobsters? WHOI Scientists Want to Know

By Kiran Johnson, whoi.edu. As offshore wind farms multiply along the New England coast, a… More

Coastal LifeOcean AwarenessOcean Science

The future of fisheries-independent surveys will include traditional capture-based surveys as well as advanced technology such as acoustic, optical, and molecular tools deployed from survey vessels, uncrewed vehicles, and moored to the seafloor. Credit: NOAA Fisheries/Su Kim

Charting the Future of Fisheries-Independent Surveys

By fisheries.noaa.gov, fisheries.noaa.gov. Fisheries-independent surveys operate on dedicated survey vessels and are the foundation of… More

Ocean Science

Coastally-trapped Kelvin waves, a signature of El Niño, traveled north along the West Coast during the 1997/1998 El Niño, as shown in a map of sea surface height anomalies. Darker reds show sea levels higher than normal, while darker blues show heights below normal. Scientists are now watching for similar waves to move up the West Coast this fall. Credit: Dillon Amaya/North Carolina State University

Ocean Indicators We’re Tracking for El Niño’s Arrival on the West Coast

By fisheries.noaa.gov, fisheries.noaa.gov. Has El Niño reached the West Coast? You might think it has.… More

Coastal NewsExtreme WeatherOcean ScienceWeather & Tides

Docked fishing boats at Yaquina Bay, Newport, Oregon. Credit: iStock

Advancing Agency-Level Reforms to Restore American Seafood Competitiveness

By fisheries.noaa.gov, fisheries.noaa.gov. Over the past year, I have met with fishermen, processors, coastal community… More

Coastal NewsFishingFood

Image Credits: Wikimedia commons.

Coral IVF: How Scientists Are Breeding Heat-Resistant Reefs for Florida's Future

By Dawn Anderson, best4boats.com. The reefs that protect South Florida's coastlines, harbors, and marinas are… More

Ocean Science

Your Privacy Choices