Tides Today & Tomorrow in Southwest Harbor, ME

TIDE TIMES for Tuesday, June 23, 2026
The tide is currently rising in Southwest Harbor, ME.
Next low tide (tomorrow) : 12:52 am (0.9 ft)
Next high tide : in 2h 17m at 6:55 pm (10.4 ft)
Sunset today : 8:21 pm
Sunrise tomorrow : 4:49 am
Moon phase : First Quarter (67% illuminated)
Tide Station Location : Station #8413564
Common Questions About Tides

Southwest Harbor, ME Tides - Sep 2006

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri5:008.65:189.810:342.111:231.45:567:10First Quarter1Fri
2Sat6:018.56:199.911:332.15:577:08First Quarter2Sat
3Sun7:058.77:2210.312:261.212:371.95:587:06Waxing Gibbous3Sun
4Mon8:089.18:2410.81:290.81:411.45:597:04Waxing Gibbous4Mon
5Tue9:059.79:2111.42:280.22:400.86:007:02Waxing Gibbous5Tue
6Wed9:5810.510:1512.03:21-0.43:360.16:027:01Full Moon6Wed
7Thu10:4811.211:0712.44:12-1.04:29-0.66:036:59Full Moon7Thu
8Fri11:3711.911:5912.55:01-1.35:21-1.06:046:57Full Moon8Fri
9Sat12:2512.35:48-1.46:13-1.36:056:55Waning Gibbous9Sat
10Sun12:5012.31:1412.46:37-1.27:06-1.36:066:53Waning Gibbous10Sun
11Mon1:4211.92:0412.37:26-0.78:00-1.06:076:51Waning Gibbous11Mon
12Tue2:3711.32:5711.98:18-0.18:57-0.66:086:50Waning Gibbous12Tue
13Wed3:3510.53:5311.39:140.59:57-0.16:106:48Third Quarter13Wed
14Thu4:379.94:5510.810:141.111:020.46:116:46Third Quarter14Thu
15Fri5:439.46:0110.411:191.56:126:44Third Quarter15Fri
16Sat6:509.17:0710.212:080.712:261.76:136:42Waning Crescent16Sat
17Sun7:549.18:1010.21:120.81:291.76:146:40Waning Crescent17Sun
18Mon8:509.39:0410.32:110.82:261.46:156:38Waning Crescent18Mon
19Tue9:389.59:5210.43:010.63:151.26:176:37Waning Crescent19Tue
20Wed10:209.810:3410.53:460.53:590.96:186:35New Moon20Wed
21Thu10:5810.111:1210.54:240.54:390.76:196:33New Moon21Thu
22Fri11:3210.311:4810.44:590.55:150.66:206:31New Moon22Fri
23Sat12:0410.45:320.65:500.66:216:29New Moon23Sat
24Sun12:2210.312:3510.56:030.86:240.66:226:27Waxing Crescent24Sun
25Mon12:5610.01:0710.46:351.06:580.76:246:25Waxing Crescent25Mon
26Tue1:319.81:4110.47:071.37:340.86:256:23Waxing Crescent26Tue
27Wed2:099.52:1810.27:421.68:141.06:266:22Waxing Crescent27Wed
28Thu2:509.23:0010.18:231.89:001.16:276:20First Quarter28Thu
29Fri3:378.93:499.99:092.09:531.26:286:18First Quarter29Fri
30Sat4:328.74:479.910:042.110:541.26:296:16First Quarter30Sat
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 9:53 pm — 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 67% 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 First Quarter (67% 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