Nearby Harbors
44.2759’ N, 68.3187’ W

Southwest Harbor, ME

45°
H 55°
L 43°
NNE
12mph
Low tide
1:12 pm
Photo Credits

Tides Today & Tomorrow in Southwest Harbor, ME

TIDE TIMES for Wednesday, October 21, 2026
The tide is currently falling in Southwest Harbor, ME.
Next low tide : in 4h 00m at 1:12 pm (1.8 ft)
Next high tide : 7:48 pm (9.6 ft)
Sunset today : 5:39 pm
Sunrise tomorrow : 6:56 am
Moon phase : Waxing Gibbous (78% illuminated)
Tide Station Location : Station #8413564
Common Questions About Tides

Featured Local Businesses

Hamilton Marine - Southwest Harbor

Hamilton Marine - Southwest Harbor
A red hull lobster yacht cruising in calm water

John Williams Boat Company
Charles M Young Painting of Maine Coast

Clark Point Gallery
Bowden Marine

Bowden Marine
Billings Diesel & Marine - Diesel Service

Billings Diesel & Marine

Southwest Harbor, ME Tides - Nov 1835

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun7:4310.28:0410.41:020.41:280.76:134:28Waxing Gibbous1Sun
2Mon8:3110.58:5310.51:530.32:180.46:154:26Waxing Gibbous2Mon
3Tue9:1410.79:3710.42:380.43:030.16:164:25Full Moon3Tue
4Wed9:5310.910:1810.33:180.53:440.06:174:24Full Moon4Wed
5Thu10:2810.910:5610.23:560.74:220.06:194:22Full Moon5Thu
6Fri11:0310.811:329.94:310.94:580.26:204:21Full Moon6Fri
7Sat11:3710.75:051.25:340.36:214:20Waning Gibbous7Sat
8Sun12:099.712:1210.55:401.56:110.66:234:19Waning Gibbous8Sun
9Mon12:469.412:4910.26:171.76:490.86:244:17Waning Gibbous9Mon
10Tue1:269.11:2910.06:562.07:311.06:254:16Waning Gibbous10Tue
11Wed2:098.92:149.87:392.28:171.26:274:15Third Quarter11Wed
12Thu2:578.83:049.68:292.39:081.26:284:14Third Quarter12Thu
13Fri3:508.84:009.69:242.210:031.26:294:13Third Quarter13Fri
14Sat4:469.04:599.710:232.010:580.96:314:12Third Quarter14Sat
15Sun5:429.45:599.911:231.511:530.66:324:11Waning Crescent15Sun
16Mon6:3610.16:5710.312:210.86:334:10Waning Crescent16Mon
17Tue7:2710.87:5210.812:460.21:160.16:354:09Waning Crescent17Tue
18Wed8:1611.68:4511.21:36-0.22:09-0.76:364:08Waning Crescent18Wed
19Thu9:0412.39:3711.52:26-0.53:00-1.46:374:07New Moon19Thu
20Fri9:5312.810:2811.63:15-0.73:51-1.86:394:06New Moon20Fri
21Sat10:4213.011:2011.54:05-0.74:42-1.96:404:06New Moon21Sat
22Sun11:3312.94:56-0.55:35-1.86:414:05Waxing Crescent22Sun
23Mon12:1411.312:2712.65:49-0.26:30-1.46:434:04Waxing Crescent23Mon
24Tue1:1010.91:2312.06:460.27:28-0.96:444:03Waxing Crescent24Tue
25Wed2:0910.52:2411.47:470.68:29-0.46:454:03First Quarter25Wed
26Thu3:1110.13:2810.88:511.09:320.16:464:02First Quarter26Thu
27Fri4:169.94:3510.39:581.210:350.46:474:02First Quarter27Fri
28Sat5:199.85:4110.011:041.211:350.66:494:01First Quarter28Sat
29Sun6:199.96:439.812:071.06:504:01Waxing Gibbous29Sun
30Mon7:1310.17:399.812:310.71:030.86:514:00Waxing Gibbous30Mon
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 transitional phase. Tonight's moon is 78% 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 Gibbous (78% 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

Coastal Stories See All

A car drives through a snowstorm in Broomfield, Colorado, in 2024. (Image credit: Bob Hyatt/NOAA)

El Nino looms large over U.S. Winter Outlook

By noaa.gov, noaa.gov. NOAA’s U.S. Winter Outlook, released today, shows how El Nino will likely influence the… More

Coastal NewsWeather & Tides

Archival photo of New England swordfishing vessel (left) courtesy of NOAA Fisheries; Background photo and photo offloading fish (right) courtesy of Hawaii Longline Association/Eric Kingma

Highly Migratory Species Management: Managing Shared Resources at Home and Around the World

By fisheries.noaa.gov, fisheries.noaa.gov. Highly migratory species—like Atlantic yellowfin tuna, Pacific albacore, and Atlantic swordfish—travel thousands of miles across… More

Coastal NewsOcean Science

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

Coastal NewsOcean 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 NewsOcean ScienceWeather & Tides

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 NewsOcean ScienceWeather & Tides

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 NewsWeather & Tides

Image Credits: Noaa fisheries.

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 LifeMarine 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 LifeOcean Science

Image Credits: Noaa Fisheries.

Celebrate National Seafood Month

By fisheries.noaa.gov, fisheries.noaa.gov. As we welcome autumn, we also celebrate National Seafood Month! Join us… More

Coastal LifeCoastal News

Your Privacy Choices