Nearby Harbors
44.2759’ N, 68.3187’ W

Southwest Harbor, ME

67°
H 68°
L 57°
SSW
10mph
Low tide
6:00 pm
Photo Credits

Tides Today & Tomorrow in Southwest Harbor, ME

TIDE TIMES for Saturday, September 12, 2026
The tide is currently falling in Southwest Harbor, ME.
Next low tide : in 5h 03m at 6:00 pm (-0.5 ft)
Next high tide (tomorrow) : 12:35 am (11.4 ft)
Sunset today : 6:49 pm
Sunrise tomorrow : 6:09 am
Moon phase : New Moon (3% illuminated)
Tide Station Location : Station #8413564
Common Questions About Tides

Featured Local Businesses

Charles M Young Painting of Maine Coast

Clark Point Gallery
Hamilton Marine - Southwest Harbor

Hamilton Marine - Southwest Harbor
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 - Jul 1904

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri12:3410.91:0810.16:320.26:461.33:527:20Waning Gibbous1Fri
2Sat1:1610.61:4910.07:120.47:281.43:537:20Waning Gibbous2Sat
3Sun1:5810.32:319.97:530.78:131.63:537:20Waning Gibbous3Sun
4Mon2:439.93:159.88:340.98:591.73:547:20Third Quarter4Mon
5Tue3:299.64:019.89:181.29:491.73:557:20Third Quarter5Tue
6Wed4:199.34:499.810:051.310:411.63:557:19Third Quarter6Wed
7Thu5:139.25:3910.010:541.411:341.43:567:19Third Quarter7Thu
8Fri6:079.26:2910.311:451.43:577:18Waning Crescent8Fri
9Sat7:029.37:2010.712:281.012:371.33:577:18Waning Crescent9Sat
10Sun7:559.68:1011.11:200.51:291.03:587:18Waning Crescent10Sun
11Mon8:4610.18:5911.72:100.02:190.73:597:17New Moon11Mon
12Tue9:3610.59:4812.13:00-0.53:100.34:007:16New Moon12Tue
13Wed10:2510.910:3812.43:49-1.04:000.04:017:16New Moon13Wed
14Thu11:1411.311:2812.64:38-1.34:51-0.34:027:15New Moon14Thu
15Fri12:0511.65:27-1.45:44-0.44:027:15Waxing Crescent15Fri
16Sat12:2112.512:5711.76:18-1.46:39-0.44:037:14Waxing Crescent16Sat
17Sun1:1512.31:5111.77:11-1.27:36-0.44:047:13Waxing Crescent17Sun
18Mon2:1211.92:4711.78:06-0.98:36-0.24:057:12First Quarter18Mon
19Tue3:1111.33:4511.59:02-0.59:38-0.14:067:12First Quarter19Tue
20Wed4:1410.84:4511.410:02-0.110:420.04:077:11First Quarter20Wed
21Thu5:1810.45:4711.211:030.311:460.14:087:10Waxing Gibbous21Thu
22Fri6:2310.16:4711.212:040.64:097:09Waxing Gibbous22Fri
23Sat7:2510.07:4411.212:480.01:030.74:107:08Waxing Gibbous23Sat
24Sun8:2210.08:3711.31:45-0.11:580.74:117:07Waxing Gibbous24Sun
25Mon9:1310.19:2511.32:37-0.22:490.74:127:06Full Moon25Mon
26Tue10:0010.210:1011.33:24-0.23:350.74:137:05Full Moon26Tue
27Wed10:4210.210:5111.24:07-0.24:180.84:147:04Full Moon27Wed
28Thu11:2210.211:3011.04:47-0.14:580.94:157:03Full Moon28Thu
29Fri11:5910.25:250.15:371.04:167:02Waning Gibbous29Fri
30Sat12:0810.812:3610.26:020.36:151.14:177:01Waning Gibbous30Sat
31Sun12:4610.61:1310.16:380.56:541.24:196:59Waning Gibbous31Sun
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.
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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 3% 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 New Moon (3% 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

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