Tides Today & Tomorrow in Southwest Harbor, ME

TIDE TIMES for Tuesday, June 23, 2026
The tide is currently falling in Southwest Harbor, ME.
Next low tide (tomorrow) : in 3h 19m at 12:52 am (0.9 ft)
Next high tide (tomorrow) : 7:27 am (9.4 ft)
Sunset today : 8:21 pm
Sunrise tomorrow : 4:49 am
Moon phase : First Quarter (67% illuminated)
Tide Station Location : Station #8413564
Common Questions About Tides

Southwest Harbor, ME Tides - May 2006

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon1:4011.72:2210.27:43-0.67:561.05:237:36Waxing Crescent1Mon
2Tue2:3011.13:149.78:340.08:481.55:227:38Waxing Crescent2Tue
3Wed3:2310.44:099.39:280.59:441.95:217:39First Quarter3Wed
4Thu4:199.95:069.010:241.010:432.15:197:40First Quarter4Thu
5Fri5:199.56:048.811:211.311:442.25:187:41First Quarter5Fri
6Sat6:199.37:008.912:171.55:167:42First Quarter6Sat
7Sun7:179.27:519.212:422.01:101.55:157:43Waxing Gibbous7Sun
8Mon8:119.28:379.51:371.81:581.45:147:45Waxing Gibbous8Mon
9Tue9:009.49:199.92:261.42:411.35:137:46Waxing Gibbous9Tue
10Wed9:449.59:5710.33:101.03:211.35:117:47Waxing Gibbous10Wed
11Thu10:259.710:3410.63:510.63:591.25:107:48Full Moon11Thu
12Fri11:049.811:0910.84:300.34:361.25:097:49Full Moon12Fri
13Sat11:439.811:4611.05:070.15:131.25:087:50Full Moon13Sat
14Sun12:229.85:460.05:511.35:077:52Full Moon14Sun
15Mon12:2511.11:039.86:26-0.16:321.35:067:53Waning Gibbous15Mon
16Tue1:0711.21:489.87:10-0.17:171.35:047:54Waning Gibbous16Tue
17Wed1:5311.12:369.77:570.08:081.45:037:55Waning Gibbous17Wed
18Thu2:4411.03:299.78:490.09:041.45:027:56Waning Gibbous18Thu
19Fri3:4110.84:279.89:450.110:051.35:017:57Third Quarter19Fri
20Sat4:4210.65:2810.010:440.211:111.15:017:58Third Quarter20Sat
21Sun5:4710.56:2910.411:450.25:007:59Third Quarter21Sun
22Mon6:5310.57:2810.812:170.712:440.24:598:00Waning Crescent22Mon
23Tue7:5710.58:2511.31:210.21:420.14:588:01Waning Crescent23Tue
24Wed8:5710.79:1811.82:21-0.32:370.14:578:02Waning Crescent24Wed
25Thu9:5310.810:0812.03:16-0.73:300.14:568:03New Moon25Thu
26Fri10:4610.810:5712.14:09-1.04:200.24:558:04New Moon26Fri
27Sat11:3610.711:4412.04:59-1.15:090.44:558:05New Moon27Sat
28Sun12:2510.55:47-0.95:570.74:548:06New Moon28Sun
29Mon12:3111.71:1310.36:35-0.66:451.04:538:07Waxing Crescent29Mon
30Tue1:1911.32:019.97:22-0.27:331.34:538:08Waxing Crescent30Tue
31Wed2:0610.92:499.68:100.28:221.64:528:09Waxing 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 4:09 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 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 First 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