Tides Today & Tomorrow in Southwest Harbor, ME

TIDE TIMES for Saturday, June 6, 2026
The tide is currently rising in Southwest Harbor, ME.
Next low tide : 9:21 pm (1.9 ft)
Next high tide : in 38m at 3:46 pm (9.4 ft)
Sunset today : 8:13 pm
Sunrise tomorrow : 4:50 am
Moon phase : Third Quarter (67% illuminated)
Tide Station Location : Station #8413564
Common Questions About Tides

Southwest Harbor, ME Tides - Jan 2023

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun6:1410.56:489.512:120.47:084:04Waxing Gibbous1Sun
2Mon7:0910.67:479.412:270.91:100.37:084:05Waxing Gibbous2Mon
3Tue8:0110.68:399.41:211.12:030.17:084:06Waxing Gibbous3Tue
4Wed8:4910.79:279.52:111.12:500.07:084:07Waxing Gibbous4Wed
5Thu9:3310.710:099.52:571.23:340.07:084:08Full Moon5Thu
6Fri10:1410.710:499.53:391.24:140.07:084:09Full Moon6Fri
7Sat10:5210.711:269.54:191.24:520.17:084:10Full Moon7Sat
8Sun11:2910.64:561.25:290.27:084:11Full Moon8Sun
9Mon12:029.512:0610.55:331.36:040.37:074:12Waning Gibbous9Mon
10Tue12:389.412:4210.36:091.46:390.57:074:13Waning Gibbous10Tue
11Wed1:149.41:2010.16:471.47:150.67:074:15Waning Gibbous11Wed
12Thu1:519.42:009.87:271.57:520.87:064:16Waning Gibbous12Thu
13Fri2:319.52:439.58:111.58:331.07:064:17Third Quarter13Fri
14Sat3:149.63:329.28:591.49:181.17:054:18Third Quarter14Sat
15Sun4:029.74:279.09:531.310:091.37:054:19Third Quarter15Sun
16Mon4:549.95:288.910:521.011:061.37:044:21Third Quarter16Mon
17Tue5:5110.26:329.011:540.77:044:22Waning Crescent17Tue
18Wed6:5110.67:349.312:061.212:560.17:034:23Waning Crescent18Wed
19Thu7:5011.28:349.81:060.91:56-0.57:034:24Waning Crescent19Thu
20Fri8:4711.89:3010.32:060.52:52-1.07:024:26New Moon20Fri
21Sat9:4312.310:2310.83:030.13:46-1.57:014:27New Moon21Sat
22Sun10:3712.611:1611.13:58-0.34:39-1.77:004:28New Moon22Sun
23Mon11:3012.74:52-0.65:31-1.87:004:30Waxing Crescent23Mon
24Tue12:0711.312:2412.55:46-0.76:22-1.66:594:31Waxing Crescent24Tue
25Wed12:5911.41:1812.06:41-0.67:13-1.26:584:32Waxing Crescent25Wed
26Thu1:5211.32:1311.37:38-0.48:06-0.66:574:34Waxing Crescent26Thu
27Fri2:4611.03:1110.68:36-0.19:000.06:564:35First Quarter27Fri
28Sat3:4110.74:129.99:360.39:560.66:554:36First Quarter28Sat
29Sun4:3910.45:169.310:390.510:561.26:544:38First Quarter29Sun
30Mon5:3910.16:208.911:420.711:561.56:534:39Waxing Gibbous30Mon
31Tue6:3810.07:228.812:430.76:524:41Waxing Gibbous31Tue
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 6:33 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 Third 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