Tides Today & Tomorrow in Southwest Harbor, ME

TIDE TIMES for Thursday, June 25, 2026
The tide is currently falling in Southwest Harbor, ME.
Next low tide (tomorrow) : in 3h 14m at 2:40 am (0.7 ft)
Next high tide (tomorrow) : 9:16 am (9.2 ft)
Sunset today : 8:21 pm
Sunrise tomorrow : 4:50 am
Moon phase : Waxing Gibbous (84% illuminated)
Tide Station Location : Station #8413564
Common Questions About Tides

Southwest Harbor, ME Tides - Dec 2004

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed1:189.21:2410.16:511.97:210.96:493:55Waning Gibbous1Wed
2Thu2:009.02:069.87:332.18:091.16:503:55Waning Gibbous2Thu
3Fri2:488.92:549.68:212.28:511.26:513:55Third Quarter3Fri
4Sat3:368.93:429.49:092.19:391.26:523:54Third Quarter4Sat
5Sun4:249.14:369.310:032.010:331.26:533:54Third Quarter5Sun
6Mon5:129.45:369.410:571.611:211.06:543:54Third Quarter6Mon
7Tue6:069.96:309.611:571.16:553:54Waning Crescent7Tue
8Wed6:5410.57:249.912:150.812:510.56:563:54Waning Crescent8Wed
9Thu7:4211.18:1810.21:030.61:39-0.26:573:54Waning Crescent9Thu
10Fri8:3011.79:0610.51:510.32:33-0.86:583:54New Moon10Fri
11Sat9:2412.210:0010.82:450.13:21-1.36:593:54New Moon11Sat
12Sun10:1212.610:5410.93:33-0.14:15-1.67:003:54New Moon12Sun
13Mon11:0612.711:4210.94:27-0.25:09-1.67:003:54Waxing Crescent13Mon
14Tue11:5412.55:21-0.16:03-1.57:013:54Waxing Crescent14Tue
15Wed12:4210.812:5412.26:150.16:57-1.17:023:55Waxing Crescent15Wed
16Thu1:3610.61:5411.77:150.37:57-0.77:033:55Waxing Crescent16Thu
17Fri2:3610.42:5411.18:150.68:57-0.37:033:55First Quarter17Fri
18Sat3:3610.34:0010.59:210.79:570.17:043:56First Quarter18Sat
19Sun4:4210.25:0610.110:270.810:570.57:043:56First Quarter19Sun
20Mon5:4210.36:129.711:330.711:570.87:053:56Waxing Gibbous20Mon
21Tue6:3610.47:129.612:330.57:053:57Waxing Gibbous21Tue
22Wed7:3010.58:069.512:510.91:330.37:063:57Waxing Gibbous22Wed
23Thu8:1810.68:549.51:391.02:210.17:063:58Waxing Gibbous23Thu
24Fri9:0610.79:429.62:271.13:090.07:073:59Full Moon24Fri
25Sat9:4810.710:249.53:151.23:510.07:073:59Full Moon25Sat
26Sun10:2410.711:009.53:511.24:270.07:074:00Full Moon26Sun
27Mon11:0610.711:369.54:331.35:030.17:084:01Full Moon27Mon
28Tue11:4210.65:091.45:390.37:084:01Waning Gibbous28Tue
29Wed12:189.412:1810.55:451.46:150.47:084:02Waning Gibbous29Wed
30Thu12:549.412:5410.36:211.56:510.57:084:03Waning Gibbous30Thu
31Fri1:309.31:3610.17:031.67:270.77:084:04Waning Gibbous31Fri
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 5:58 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 84% 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 Waxing Gibbous (84% 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