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 4h 23m 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 - Jan 2005

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat2:069.32:129.87:391.68:090.87:084:05Waning Gibbous1Sat
2Sun2:489.43:009.68:271.68:510.97:084:06Third Quarter2Sun
3Mon3:309.53:489.39:151.59:391.17:084:06Third Quarter3Mon
4Tue4:189.74:489.110:091.310:271.17:084:07Third Quarter4Tue
5Wed5:1210.05:489.111:090.911:271.17:084:08Waning Crescent5Wed
6Thu6:1210.46:489.312:150.57:084:10Waning Crescent6Thu
7Fri7:0610.97:549.612:271.01:15-0.17:084:11Waning Crescent7Fri
8Sat8:0611.58:4810.01:210.72:09-0.77:084:12Waning Crescent8Sat
9Sun9:0012.09:4810.42:210.43:09-1.27:074:13New Moon9Sun
10Mon10:0012.410:4210.83:150.04:03-1.57:074:14New Moon10Mon
11Tue10:5412.611:3011.04:15-0.34:57-1.77:074:15New Moon11Tue
12Wed11:4812.65:09-0.45:45-1.67:064:16Waxing Crescent12Wed
13Thu12:2411.112:4212.36:03-0.46:39-1.47:064:17Waxing Crescent13Thu
14Fri1:1811.11:3611.86:57-0.37:33-1.07:054:19Waxing Crescent14Fri
15Sat2:1211.02:3011.17:57-0.18:27-0.47:054:20First Quarter15Sat
16Sun3:0610.83:3010.48:570.29:210.27:044:21First Quarter16Sun
17Mon4:0610.54:309.79:570.510:150.87:044:22First Quarter17Mon
18Tue5:0010.35:369.210:570.711:151.27:034:24First Quarter18Tue
19Wed6:0010.16:368.912:030.77:024:25Waxing Gibbous19Wed
20Thu6:5410.07:368.912:151.512:570.77:024:26Waxing Gibbous20Thu
21Fri7:4810.18:308.91:091.61:510.67:014:28Waxing Gibbous21Fri
22Sat8:3610.29:189.12:031.52:390.47:004:29Waxing Gibbous22Sat
23Sun9:2410.410:009.22:451.43:210.36:594:30Full Moon23Sun
24Mon10:0610.510:369.43:271.34:030.26:584:32Full Moon24Mon
25Tue10:4210.611:129.54:091.24:390.26:574:33Full Moon25Tue
26Wed11:1810.611:489.64:451.15:150.16:574:34Full Moon26Wed
27Thu11:5410.65:211.05:450.26:564:36Waning Gibbous27Thu
28Fri12:189.712:2410.55:511.06:210.26:554:37Waning Gibbous28Fri
29Sat12:549.81:0010.36:271.06:510.46:544:38Waning Gibbous29Sat
30Sun1:309.91:4210.17:090.97:270.56:524:40Waning Gibbous30Sun
31Mon2:0610.02:249.77:510.98:090.76:514:41Third Quarter31Mon
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