Tides Today & Tomorrow in Southwest Harbor, ME

TIDE TIMES for Sunday, July 5, 2026
The tide is currently falling in Southwest Harbor, ME.
Next low tide : in 27m at 8:52 pm (1.3 ft)
Next high tide (tomorrow) : 3:24 am (10.3 ft)
Sunset today : 8:20 pm
Sunrise tomorrow : 4:55 am
Moon phase : Waning Gibbous (72% illuminated)
Tide Station Location : Station #8413564
Common Questions About Tides

Southwest Harbor, ME Tides - Sep 1992

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue2:1711.62:3912.08:01-0.58:36-0.75:567:09Waxing Crescent1Tue
2Wed3:1210.93:3311.58:550.19:33-0.25:577:07First Quarter2Wed
3Thu4:1110.24:3110.99:510.810:340.35:597:05First Quarter3Thu
4Fri5:129.65:3310.510:521.311:370.76:007:04First Quarter4Fri
5Sat6:169.26:3610.211:541.66:017:02First Quarter5Sat
6Sun7:199.17:3710.112:390.912:561.66:027:00Waxing Gibbous6Sun
7Mon8:169.28:3210.21:370.91:531.56:036:58Waxing Gibbous7Mon
8Tue9:079.49:2110.32:300.82:441.36:046:56Waxing Gibbous8Tue
9Wed9:529.710:0510.43:160.73:301.16:056:54Waxing Gibbous9Wed
10Thu10:319.910:4510.53:570.54:110.86:076:53Full Moon10Thu
11Fri11:0710.211:2210.64:340.54:490.76:086:51Full Moon11Fri
12Sat11:4110.411:5710.55:080.55:250.66:096:49Full Moon12Sat
13Sun12:1310.55:400.55:590.56:106:47Full Moon13Sun
14Mon12:3110.412:4610.66:120.76:340.56:116:45Waning Gibbous14Mon
15Tue1:0710.21:1910.76:450.87:100.56:126:43Waning Gibbous15Tue
16Wed1:4410.01:5610.67:211.07:500.66:136:41Waning Gibbous16Wed
17Thu2:249.82:3810.68:001.28:340.66:156:40Waning Gibbous17Thu
18Fri3:099.53:2510.58:451.39:250.76:166:38Third Quarter18Fri
19Sat4:029.34:2010.49:381.510:230.86:176:36Third Quarter19Sat
20Sun5:019.25:2210.410:381.511:270.76:186:34Third Quarter20Sun
21Mon6:069.36:2810.611:441.36:196:32Waning Crescent21Mon
22Tue7:129.77:3511.012:320.412:520.96:206:30Waning Crescent22Tue
23Wed8:1410.38:3711.41:35-0.11:560.36:226:28Waning Crescent23Wed
24Thu9:1111.19:3511.92:33-0.52:56-0.46:236:26Waning Crescent24Thu
25Fri10:0411.810:2912.23:27-0.93:52-1.06:246:25New Moon25Fri
26Sat10:5412.311:2212.24:18-1.24:44-1.46:256:23New Moon26Sat
27Sun11:4312.65:07-1.25:36-1.66:266:21New Moon27Sun
28Mon12:1312.112:3212.65:56-1.06:27-1.56:276:19Waxing Crescent28Mon
29Tue1:0311.71:2112.36:45-0.57:18-1.16:296:17Waxing Crescent29Tue
30Wed1:5511.22:1111.87:350.08:11-0.66:306:15Waxing Crescent30Wed
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8413564)

Common Questions About Southwest Harbor, ME Tides

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What time does the tide turn (slack tide) in Southwest Harbor, ME today?

Slack tide in Southwest Harbor, ME is approximately 12:08 am — midway between the next high and low tide, when tidal current is weakest. This is the preferred window for boat crossings, underwater visibility, and fishing in areas with strong currents.

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 72% 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 Waning Gibbous (72% 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