Tides Today & Tomorrow in Southwest Harbor, ME

TIDE TIMES for Friday, June 19, 2026
The tide is currently rising in Southwest Harbor, ME.
Next low tide (tomorrow) : 9:24 am (-0.3 ft)
Next high tide (tomorrow) : in 5h 25m at 3:25 am (11.4 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 - Jan 2013

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue12:4810.012:5610.76:230.96:500.17:084:05Waning Gibbous1Tue
2Wed1:2610.11:3710.57:040.97:300.27:084:06Waning Gibbous2Wed
3Thu2:0810.22:2310.37:500.88:140.37:084:07Third Quarter3Thu
4Fri2:5510.33:1510.08:410.79:030.47:084:08Third Quarter4Fri
5Sat3:4610.44:139.89:380.69:580.57:084:09Third Quarter5Sat
6Sun4:4310.65:179.710:410.410:590.57:084:10Third Quarter6Sun
7Mon5:4510.96:239.811:460.17:084:11Waning Crescent7Mon
8Tue6:4711.37:2810.112:020.412:50-0.47:084:12Waning Crescent8Tue
9Wed7:4811.88:2910.51:050.11:51-1.07:074:13Waning Crescent9Wed
10Thu8:4712.39:2611.02:06-0.22:49-1.47:074:14New Moon10Thu
11Fri9:4312.610:2011.33:03-0.63:43-1.87:074:15New Moon11Fri
12Sat10:3612.811:1211.63:58-0.84:35-1.97:064:16New Moon12Sat
13Sun11:2812.74:52-0.95:26-1.87:064:17Waxing Crescent13Sun
14Mon12:0311.612:2012.35:44-0.86:16-1.57:054:19Waxing Crescent14Mon
15Tue12:5311.51:1111.86:37-0.67:05-1.07:054:20Waxing Crescent15Tue
16Wed1:4311.22:0411.17:30-0.27:55-0.47:044:21Waxing Crescent16Wed
17Thu2:3510.82:5810.48:240.28:470.27:044:22First Quarter17Thu
18Fri3:2710.43:549.79:200.69:400.87:034:24First Quarter18Fri
19Sat4:2210.14:539.210:190.910:361.27:024:25First Quarter19Sat
20Sun5:189.85:548.911:181.111:331.57:024:26First Quarter20Sun
21Mon6:159.76:528.812:161.17:014:28Waxing Gibbous21Mon
22Tue7:099.87:468.912:281.61:100.97:004:29Waxing Gibbous22Tue
23Wed8:0010.08:349.11:201.51:590.76:594:30Waxing Gibbous23Wed
24Thu8:4510.39:189.42:081.32:440.46:584:32Waxing Gibbous24Thu
25Fri9:2710.59:579.62:511.03:240.16:574:33Full Moon25Fri
26Sat10:0510.810:349.93:310.84:01-0.16:564:34Full Moon26Sat
27Sun10:4210.911:0910.24:080.64:36-0.26:564:36Full Moon27Sun
28Mon11:1811.011:4410.44:450.55:10-0.36:554:37Full Moon28Mon
29Tue11:5511.05:210.35:45-0.36:534:38Waning Gibbous29Tue
30Wed12:2010.612:3311.06:000.26:22-0.36:524:40Waning Gibbous30Wed
31Thu12:5810.71:1510.86:410.17:02-0.26:514:41Waning Gibbous31Thu
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 6:24 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