Tides Today & Tomorrow in Southwest Harbor, ME

TIDE TIMES for Saturday, June 20, 2026
The tide is currently rising in Southwest Harbor, ME.
Next low tide : 9:50 pm (0.7 ft)
Next high tide : in 6h 18m at 4:06 pm (10.7 ft)
Sunset today : 8:20 pm
Sunrise tomorrow : 4:49 am
Moon phase : First Quarter (37% illuminated)
Tide Station Location : Station #8413564
Common Questions About Tides

Southwest Harbor, ME Tides - Mar 2012

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu4:119.34:508.410:121.510:262.06:095:21First Quarter1Thu
2Fri5:089.35:508.411:111.411:251.96:075:23First Quarter2Fri
3Sat6:079.46:488.712:101.26:055:24Waxing Gibbous3Sat
4Sun7:049.87:419.212:231.61:040.86:035:25Waxing Gibbous4Sun
5Mon7:5710.38:299.81:181.11:530.26:025:27Waxing Gibbous5Mon
6Tue8:4510.99:1410.52:080.52:39-0.36:005:28Waxing Gibbous6Tue
7Wed9:3211.49:5711.22:55-0.23:22-0.85:585:29Full Moon7Wed
8Thu10:1811.810:4111.83:41-0.84:06-1.15:565:30Full Moon8Thu
9Fri11:0412.011:2512.24:27-1.24:50-1.25:555:32Full Moon9Fri
10Sat11:5212.05:15-1.55:36-1.25:535:33Waning Gibbous10Sat
11Sun12:1212.31:4111.77:04-1.57:24-0.96:516:34Waning Gibbous11Sun
12Mon2:0112.22:3411.27:57-1.38:16-0.56:496:36Waning Gibbous12Mon
13Tue2:5411.93:3110.78:53-0.99:120.06:476:37Third Quarter13Tue
14Wed3:5211.44:3410.19:54-0.510:150.56:466:38Third Quarter14Wed
15Thu4:5610.95:429.711:010.011:240.96:446:39Third Quarter15Thu
16Fri6:0610.66:529.512:100.26:426:41Third Quarter16Fri
17Sat7:1610.47:599.712:340.91:170.26:406:42Waning Crescent17Sat
18Sun8:2110.58:5810.01:410.82:180.16:386:43Waning Crescent18Sun
19Mon9:1910.79:4910.32:400.43:12-0.16:366:44Waning Crescent19Mon
20Tue10:0910.810:3510.63:330.13:59-0.26:356:46New Moon20Tue
21Wed10:5510.911:1510.84:20-0.14:41-0.26:336:47New Moon21Wed
22Thu11:3610.811:5310.95:02-0.25:200.06:316:48New Moon22Thu
23Fri12:1510.75:41-0.25:560.26:296:49New Moon23Fri
24Sat12:2810.912:5110.46:18-0.16:310.56:276:51Waxing Crescent24Sat
25Sun1:0310.71:2810.26:550.17:060.86:256:52Waxing Crescent25Sun
26Mon1:3810.62:059.87:310.37:421.16:246:53Waxing Crescent26Mon
27Tue2:1410.32:449.58:090.68:201.46:226:54Waxing Crescent27Tue
28Wed2:5410.03:279.18:510.89:021.66:206:55Waxing Crescent28Wed
29Thu3:389.84:148.99:361.19:491.96:186:57First Quarter29Thu
30Fri4:279.65:078.710:271.210:431.96:166:58First Quarter30Fri
31Sat5:239.56:048.811:231.211:421.86:146:59First Quarter31Sat
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 6:58 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 37% 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 (37% 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