Tides Today & Tomorrow in Southwest Harbor, ME

TIDE TIMES for Friday, June 19, 2026
The tide is currently falling in Southwest Harbor, ME.
Next low tide : in 4h 08m at 8:28 am (-0.8 ft)
Next high tide : 3:09 pm (10.8 ft)
Sunset today : 8:20 pm
Sunrise tomorrow : 4:49 am
Moon phase : Waxing Crescent (27% illuminated)
Tide Station Location : Station #8413564
Common Questions About Tides

Southwest Harbor, ME Tides - Mar 2038

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon7:0710.57:509.512:261.01:090.16:095:21Waning Crescent1Mon
2Tue8:0710.68:459.71:280.92:060.06:075:22Waning Crescent2Tue
3Wed9:0010.89:3310.02:220.72:56-0.26:065:24Waning Crescent3Wed
4Thu9:4610.910:1510.23:110.53:41-0.26:045:25New Moon4Thu
5Fri10:2810.910:5410.33:540.34:20-0.26:025:26New Moon5Fri
6Sat11:0710.911:2910.34:340.24:57-0.16:005:27New Moon6Sat
7Sun11:4410.75:110.35:320.15:595:29New Moon7Sun
8Mon12:0410.312:2010.55:470.46:050.45:575:30Waxing Crescent8Mon
9Tue12:3710.312:5610.16:230.56:390.75:555:31Waxing Crescent9Tue
10Wed1:1210.11:339.87:000.77:141.05:535:33Waxing Crescent10Wed
11Thu1:4810.02:139.47:390.97:521.35:525:34Waxing Crescent11Thu
12Fri2:289.82:579.08:221.18:351.65:505:35First Quarter12Fri
13Sat3:139.63:488.79:101.29:241.85:485:36First Quarter13Sat
14Sun5:049.55:458.611:061.311:211.96:466:38First Quarter14Sun
15Mon6:039.56:478.612:071.16:446:39First Quarter15Mon
16Tue7:059.87:499.012:231.81:080.86:426:40Waxing Gibbous16Tue
17Wed8:0610.38:469.61:251.42:070.36:416:41Waxing Gibbous17Wed
18Thu9:0310.99:3810.32:230.73:01-0.46:396:43Waxing Gibbous18Thu
19Fri9:5611.610:2811.13:180.03:51-0.96:376:44Full Moon19Fri
20Sat10:4812.111:1611.84:09-0.74:40-1.46:356:45Full Moon20Sat
21Sun11:3812.55:00-1.35:27-1.66:336:46Full Moon21Sun
22Mon12:0312.312:2812.55:50-1.76:15-1.66:316:48Full Moon22Mon
23Tue12:5112.51:1912.36:41-1.87:04-1.36:306:49Waning Gibbous23Tue
24Wed1:4012.52:1211.87:34-1.67:56-0.86:286:50Waning Gibbous24Wed
25Thu2:3212.23:0811.18:29-1.38:50-0.26:266:51Waning Gibbous25Thu
26Fri3:2711.74:0810.59:28-0.79:490.46:246:53Third Quarter26Fri
27Sat4:2811.15:139.810:31-0.210:531.06:226:54Third Quarter27Sat
28Sun5:3310.56:219.511:380.26:206:55Third Quarter28Sun
29Mon6:4110.27:289.412:011.312:450.56:196:56Waning Crescent29Mon
30Tue7:4810.18:299.51:081.31:470.56:176:58Waning Crescent30Tue
31Wed8:4710.29:239.72:091.12:430.46:156:59Waning Crescent31Wed
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 11:48 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 27% 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 Crescent (27% 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