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 : in 17m at 12:11 pm (1.0 ft)
Next high tide : 6:55 pm (10.4 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 - Jan 2007

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon8:2111.49:0410.01:410.62:26-0.67:084:04Waxing Gibbous1Mon
2Tue9:1511.69:5710.12:370.63:20-0.87:084:05Full Moon2Tue
3Wed10:0611.610:4510.13:290.54:09-0.87:084:06Full Moon3Wed
4Thu10:5411.511:3210.14:180.54:56-0.67:084:07Full Moon4Thu
5Fri11:4011.35:050.65:41-0.47:084:08Waning Gibbous5Fri
6Sat12:1610.012:2511.05:510.86:24-0.17:084:09Waning Gibbous6Sat
7Sun12:599.91:0910.66:361.07:060.37:084:10Waning Gibbous7Sun
8Mon1:429.71:5310.17:211.27:470.77:084:11Waning Gibbous8Mon
9Tue2:259.62:399.68:071.48:301.17:084:12Third Quarter9Tue
10Wed3:099.43:279.18:561.69:141.47:074:13Third Quarter10Wed
11Thu3:569.34:208.69:481.710:021.87:074:14Third Quarter11Thu
12Fri4:459.25:168.410:431.710:532.07:064:16Third Quarter12Fri
13Sat5:379.36:148.311:391.611:472.17:064:17Waning Crescent13Sat
14Sun6:309.47:118.412:351.37:064:18Waning Crescent14Sun
15Mon7:229.88:038.612:412.01:271.07:054:19Waning Crescent15Mon
16Tue8:1110.28:529.01:321.82:150.57:054:20Waning Crescent16Tue
17Wed8:5810.79:369.42:201.43:010.07:044:22New Moon17Wed
18Thu9:4311.210:209.93:051.03:45-0.47:034:23New Moon18Thu
19Fri10:2711.611:0310.33:500.64:28-0.87:034:24New Moon19Fri
20Sat11:1211.911:4610.74:350.25:11-1.17:024:26New Moon20Sat
21Sun11:5812.05:22-0.15:55-1.27:014:27Waxing Crescent21Sun
22Mon12:3111.012:4611.86:10-0.36:41-1.17:004:28Waxing Crescent22Mon
23Tue1:1811.21:3711.57:02-0.47:28-0.87:004:30Waxing Crescent23Tue
24Wed2:0811.22:3110.97:56-0.38:19-0.36:594:31First Quarter24Wed
25Thu3:0111.13:3010.38:55-0.19:150.26:584:32First Quarter25Thu
26Fri3:5811.04:359.79:580.110:160.76:574:34First Quarter26Fri
27Sat5:0010.75:449.311:060.211:211.06:564:35Waxing Gibbous27Sat
28Sun6:0610.66:539.212:140.26:554:36Waxing Gibbous28Sun
29Mon7:1110.77:589.312:281.11:190.06:544:38Waxing Gibbous29Mon
30Tue8:1210.88:559.51:311.02:17-0.26:534:39Waxing Gibbous30Tue
31Wed9:0811.09:469.72:290.83:10-0.36:524:40Full Moon31Wed
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 3:33 pm — 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