Nearby Harbors
44.2759’ N, 68.3187’ W

Southwest Harbor, ME

66°
H -°
L 46°
NNW
5mph
High tide
7:41 pm
Photo Credits

Tides Today & Tomorrow in Southwest Harbor, ME

TIDE TIMES for Monday, September 21, 2026
The tide is currently rising in Southwest Harbor, ME.
Next low tide (tomorrow) : 1:41 am (1.4 ft)
Next high tide : in 3h 42m at 7:41 pm (9.5 ft)
Sunset today : 6:33 pm
Sunrise tomorrow : 6:19 am
Moon phase : Waxing Gibbous (75% illuminated)
Tide Station Location : Station #8413564
Common Questions About Tides

Featured Local Businesses

Hamilton Marine - Southwest Harbor

Hamilton Marine - Southwest Harbor
Charles M Young Painting of Maine Coast

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

John Williams Boat Company
Bowden Marine

Bowden Marine
Billings Diesel & Marine - Diesel Service

Billings Diesel & Marine

Southwest Harbor, ME Tides - Feb 1889

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri11:1212.311:4711.14:36-0.55:10-1.56:504:43New Moon1Fri
2Sat12:0212.05:26-0.55:58-1.26:494:44Waxing Crescent2Sat
3Sun12:3411.012:5011.66:16-0.36:45-0.86:484:46Waxing Crescent3Sun
4Mon1:2110.81:3911.07:050.07:31-0.26:474:47Waxing Crescent4Mon
5Tue2:0810.52:2910.37:550.48:180.46:464:49Waxing Crescent5Tue
6Wed2:5610.13:209.78:470.89:070.96:444:50First Quarter6Wed
7Thu3:469.84:159.19:411.19:591.46:434:51First Quarter7Thu
8Fri4:399.55:148.710:381.310:531.76:424:53First Quarter8Fri
9Sat5:359.46:138.511:361.311:501.96:404:54First Quarter9Sat
10Sun6:319.47:108.512:331.26:394:56Waxing Gibbous10Sun
11Mon7:249.68:028.812:451.81:261.06:384:57Waxing Gibbous11Mon
12Tue8:139.98:499.11:361.62:130.66:364:58Waxing Gibbous12Tue
13Wed8:5810.39:319.42:221.32:560.36:355:00Waxing Gibbous13Wed
14Thu9:3910.610:109.83:041.03:360.06:335:01Full Moon14Thu
15Fri10:1811.010:4710.13:430.74:13-0.36:325:02Full Moon15Fri
16Sat10:5611.211:2310.44:220.44:50-0.56:305:04Full Moon16Sat
17Sun11:3511.45:000.15:27-0.66:295:05Full Moon17Sun
18Mon12:0110.712:1511.45:40-0.16:06-0.66:275:07Waning Gibbous18Mon
19Tue12:4111.012:5811.26:23-0.26:47-0.56:265:08Waning Gibbous19Tue
20Wed1:2311.11:4510.97:10-0.37:32-0.36:245:09Waning Gibbous20Wed
21Thu2:1011.12:3710.58:01-0.28:220.16:225:11Third Quarter21Thu
22Fri3:0211.03:3510.08:58-0.19:180.46:215:12Third Quarter22Fri
23Sat4:0110.84:409.710:020.110:220.76:195:13Third Quarter23Sat
24Sun5:0510.75:509.511:100.111:300.86:185:15Third Quarter24Sun
25Mon6:1410.87:009.612:20-0.16:165:16Waning Crescent25Mon
26Tue7:2111.08:0410.012:390.71:25-0.46:145:17Waning Crescent26Tue
27Wed8:2311.39:0210.41:430.32:24-0.76:135:19Waning Crescent27Wed
28Thu9:1911.79:5410.82:41-0.13:17-1.06:115:20New Moon28Thu
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8413564)

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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 75% 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 (75% 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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