Tides Today & Tomorrow in Southwest Harbor, ME

TIDE TIMES for Monday, June 22, 2026
The tide is currently falling in Southwest Harbor, ME.
Next low tide : in 2h 29m at 11:52 pm (0.9 ft)
Next high tide (tomorrow) : 6:27 am (9.7 ft)
Sunset today : 8:21 pm
Sunrise tomorrow : 4:49 am
Moon phase : First Quarter (58% illuminated)
Tide Station Location : Station #8413564
Common Questions About Tides

Southwest Harbor, ME Tides - Dec 2007

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat3:539.74:1210.09:351.410:090.76:483:55Third Quarter1Sat
2Sun4:539.65:149.610:391.411:061.06:493:55Third Quarter2Sun
3Mon5:509.76:159.311:391.36:503:55Waning Crescent3Mon
4Tue6:439.87:119.212:001.212:361.26:513:54Waning Crescent4Tue
5Wed7:3110.08:029.212:511.41:270.96:523:54Waning Crescent5Wed
6Thu8:1510.28:499.31:381.42:130.76:533:54Waning Crescent6Thu
7Fri8:5610.39:319.32:211.52:560.56:543:54New Moon7Fri
8Sat9:3510.510:109.43:011.53:350.36:553:54New Moon8Sat
9Sun10:1210.610:489.43:391.54:130.36:563:54New Moon9Sun
10Mon10:4810.611:249.44:161.54:500.36:573:54New Moon10Mon
11Tue11:2510.64:521.55:260.36:583:54New Moon11Tue
12Wed12:019.412:0310.65:291.66:040.36:593:54Waxing Crescent12Wed
13Thu12:399.412:4310.66:081.66:430.37:003:54Waxing Crescent13Thu
14Fri1:209.41:2610.56:511.57:260.47:013:54Waxing Crescent14Fri
15Sat2:049.52:1310.37:381.48:110.47:013:54First Quarter15Sat
16Sun2:519.73:0510.28:301.39:000.47:023:55First Quarter16Sun
17Mon3:4210.04:0210.09:281.19:530.57:033:55First Quarter17Mon
18Tue4:3710.35:049.910:290.710:490.57:033:55First Quarter18Tue
19Wed5:3510.76:079.911:320.311:480.47:043:56Waxing Gibbous19Wed
20Thu6:3311.27:1110.112:34-0.27:053:56Waxing Gibbous20Thu
21Fri7:3011.78:1110.312:470.31:34-0.87:053:56Waxing Gibbous21Fri
22Sat8:2712.19:0810.61:450.12:31-1.27:063:57Full Moon22Sat
23Sun9:2112.410:0310.82:420.03:26-1.57:063:58Full Moon23Sun
24Mon10:1512.510:5610.83:36-0.14:19-1.57:063:58Full Moon24Mon
25Tue11:0812.411:4810.84:30-0.15:11-1.47:073:59Full Moon25Tue
26Wed12:0012.15:230.06:02-1.17:073:59Waning Gibbous26Wed
27Thu12:3910.612:5211.76:160.26:53-0.77:074:00Waning Gibbous27Thu
28Fri1:3110.41:4511.17:090.57:44-0.27:084:01Waning Gibbous28Fri
29Sat2:2210.12:3810.48:040.98:340.47:084:02Third Quarter29Sat
30Sun3:159.93:349.79:001.29:260.97:084:02Third Quarter30Sun
31Mon4:089.74:329.29:581.410:191.37:084:03Third 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 3:09 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 neap phase. Tonight's moon is 58% 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 minimum.

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 (58% illuminated). This places Southwest Harbor, ME in a neap tide cycle, so tidal ranges are near their weekly minimum 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