Tides Today & Tomorrow in Southwest Harbor, ME

TIDE TIMES for Monday, June 29, 2026
The tide is currently rising in Southwest Harbor, ME.
Next low tide : 4:56 pm (1.7 ft)
Next high tide : in 4h 03m at 11:28 am (9.3 ft)
Sunset today : 8:21 pm
Sunrise tomorrow : 4:52 am
Moon phase : Full Moon (100% illuminated)
Tide Station Location : Station #8413564
Common Questions About Tides

Southwest Harbor, ME Tides - Mar 2000

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed7:139.57:518.812:341.81:131.06:095:21Waning Crescent1Wed
2Thu8:039.88:389.11:261.62:010.76:075:23Waning Crescent2Thu
3Fri8:4910.29:199.52:131.32:450.46:055:24Waning Crescent3Fri
4Sat9:3010.59:589.92:560.93:240.16:045:25New Moon4Sat
5Sun10:0910.910:3410.33:350.54:01-0.26:025:26New Moon5Sun
6Mon10:4711.111:1010.74:130.24:36-0.46:005:28New Moon6Mon
7Tue11:2511.211:4611.04:50-0.15:13-0.55:585:29New Moon7Tue
8Wed12:0411.25:29-0.35:50-0.55:575:30Waxing Crescent8Wed
9Thu12:2511.212:4611.16:11-0.46:31-0.35:555:32Waxing Crescent9Thu
10Fri1:0611.31:3210.86:56-0.47:15-0.15:535:33Waxing Crescent10Fri
11Sat1:5311.22:2310.47:46-0.38:050.25:515:34First Quarter11Sat
12Sun2:4411.13:2010.08:42-0.29:010.65:495:35First Quarter12Sun
13Mon3:4210.84:259.79:450.010:050.85:485:37First Quarter13Mon
14Tue4:4810.75:359.510:540.111:150.95:465:38First Quarter14Tue
15Wed5:5810.76:459.712:030.05:445:39Waxing Gibbous15Wed
16Thu7:0710.97:4910.112:250.71:09-0.35:425:40Waxing Gibbous16Thu
17Fri8:1011.28:4710.61:300.32:08-0.75:405:42Waxing Gibbous17Fri
18Sat9:0611.69:3811.12:28-0.23:02-0.95:385:43Full Moon18Sat
19Sun9:5811.810:2611.43:21-0.63:50-1.15:375:44Full Moon19Sun
20Mon10:4611.811:1011.54:11-0.84:36-1.05:355:45Full Moon20Mon
21Tue11:3211.611:5311.44:57-0.95:19-0.75:335:47Full Moon21Tue
22Wed12:1611.25:41-0.76:01-0.35:315:48Waning Gibbous22Wed
23Thu12:3411.21:0010.76:25-0.46:430.25:295:49Waning Gibbous23Thu
24Fri1:1610.91:4510.27:090.07:260.85:275:50Waning Gibbous24Fri
25Sat1:5910.42:319.67:550.48:101.35:265:52Waning Gibbous25Sat
26Sun2:4410.03:219.18:430.88:591.75:245:53Third Quarter26Sun
27Mon3:349.64:158.79:351.29:532.05:225:54Third Quarter27Mon
28Tue4:309.35:138.510:321.410:512.25:205:55Third Quarter28Tue
29Wed5:299.26:128.611:301.411:502.15:185:57Third Quarter29Wed
30Thu6:279.37:078.812:261.35:165:58Waning Crescent30Thu
31Fri7:219.67:559.212:451.81:171.05:155:59Waning Crescent31Fri
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 2:12 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 spring phase. Tonight's moon is 100% 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 near their weekly maximum.

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 Full Moon (100% illuminated). This places Southwest Harbor, ME in a spring tide cycle, so tidal ranges are near their weekly maximum 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