Tides Today & Tomorrow in Southwest Harbor, ME

TIDE TIMES for Wednesday, July 15, 2026
The tide is currently rising in Southwest Harbor, ME.
Next low tide (tomorrow) : 6:22 am (-1.3 ft)
Next high tide (tomorrow) : in 3h 03m at 12:20 am (12.5 ft)
Sunset today : 8:14 pm
Sunrise tomorrow : 5:03 am
Moon phase : New Moon (2% illuminated)
Tide Station Location : Station #8413564
Common Questions About Tides

Southwest Harbor, ME Tides - Feb 2072

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon7:3611.28:1510.212:530.51:37-0.56:504:42Waxing Gibbous1Mon
2Tue8:3311.89:1010.81:520.02:33-1.26:494:43Full Moon2Tue
3Wed9:2812.410:0311.42:48-0.53:26-1.76:484:45Full Moon3Wed
4Thu10:2112.810:5411.83:42-1.04:18-2.06:474:46Full Moon4Thu
5Fri11:1312.911:4612.14:35-1.35:09-2.16:464:48Full Moon5Fri
6Sat12:0612.85:29-1.46:00-2.06:444:49Waning Gibbous6Sat
7Sun12:3712.112:5912.46:22-1.36:52-1.66:434:50Waning Gibbous7Sun
8Mon1:2911.91:5411.87:18-1.07:45-1.06:424:52Waning Gibbous8Mon
9Tue2:2311.62:5111.08:15-0.68:40-0.46:404:53Third Quarter9Tue
10Wed3:2011.13:5210.39:15-0.29:390.26:394:55Third Quarter10Wed
11Thu4:2010.74:569.710:180.210:400.76:384:56Third Quarter11Thu
12Fri5:2210.36:019.311:220.511:421.06:364:57Third Quarter12Fri
13Sat6:2410.27:049.212:250.56:354:59Waning Crescent13Sat
14Sun7:2210.28:009.312:421.11:220.46:335:00Waning Crescent14Sun
15Mon8:1510.38:499.51:371.02:130.36:325:02Waning Crescent15Mon
16Tue9:0210.59:339.72:260.92:580.16:305:03Waning Crescent16Tue
17Wed9:4410.610:129.93:100.73:380.06:295:04New Moon17Wed
18Thu10:2310.710:4810.13:490.64:150.06:275:06New Moon18Thu
19Fri10:5910.811:2210.24:260.54:490.06:265:07New Moon19Fri
20Sat11:3310.711:5510.35:010.45:220.06:245:08New Moon20Sat
21Sun12:0710.65:350.45:550.16:235:10Waxing Crescent21Sun
22Mon12:2710.312:4210.46:100.56:280.36:215:11Waxing Crescent22Mon
23Tue1:0210.31:1910.26:460.57:030.56:205:13Waxing Crescent23Tue
24Wed1:3910.32:009.97:260.57:430.66:185:14Waxing Crescent24Wed
25Thu2:2010.32:469.78:110.68:280.86:165:15First Quarter25Thu
26Fri3:0710.23:399.49:020.69:201.06:155:17First Quarter26Fri
27Sat4:0210.24:399.310:010.610:191.06:135:18First Quarter27Sat
28Sun5:0310.35:459.411:050.411:250.96:115:19First Quarter28Sun
29Mon6:0910.66:519.812:110.06:105:21Waxing Gibbous29Mon
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 3:21 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 spring phase. Tonight's moon is 2% 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 New Moon (2% 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