Tides Today & Tomorrow in Southwest Harbor, ME

TIDE TIMES for Monday, June 29, 2026
The tide is currently falling in Southwest Harbor, ME.
Next low tide : in 1h 06m at 4:52 am (0.5 ft)
Next high tide : 11:28 am (9.3 ft)
Sunset today : 8:21 pm
Sunrise tomorrow : 4:52 am
Moon phase : Full Moon (100% illuminated)
Tide Station Location : Station #8413564
Common Questions About Tides

Southwest Harbor, ME Tides - Jun 2000

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu10:2011.010:3512.33:43-0.83:56-0.14:518:10New Moon1Thu
2Fri11:1111.311:2412.74:34-1.34:47-0.34:518:11New Moon2Fri
3Sat12:0311.45:25-1.65:38-0.34:518:11New Moon3Sat
4Sun12:1612.812:5611.46:18-1.76:32-0.24:508:12Waxing Crescent4Sun
5Mon1:0912.71:5111.37:12-1.67:280.04:508:13Waxing Crescent5Mon
6Tue2:0512.42:4911.18:08-1.38:280.24:498:14Waxing Crescent6Tue
7Wed3:0411.93:4910.99:07-0.99:300.54:498:14First Quarter7Wed
8Thu4:0611.44:5010.710:07-0.510:350.64:498:15First Quarter8Thu
9Fri5:1010.95:5210.711:08-0.111:400.74:498:16First Quarter9Fri
10Sat6:1510.56:5310.712:080.24:488:16First Quarter10Sat
11Sun7:1910.37:5010.812:430.61:070.44:488:17Waxing Gibbous11Sun
12Mon8:1910.18:4310.91:430.42:020.64:488:17Waxing Gibbous12Mon
13Tue9:1410.19:3111.02:380.22:520.74:488:18Waxing Gibbous13Tue
14Wed10:0410.010:1511.13:280.13:390.94:488:18Waxing Gibbous14Wed
15Thu10:4910.010:5611.14:140.04:221.04:488:19Full Moon15Thu
16Fri11:3110.011:3511.04:550.05:031.14:488:19Full Moon16Fri
17Sat12:109.95:350.15:421.34:488:19Full Moon17Sat
18Sun12:1310.912:489.86:130.26:201.44:488:20Full Moon18Sun
19Mon12:5010.81:269.76:500.36:571.64:498:20Waning Gibbous19Mon
20Tue1:2810.62:049.77:270.47:361.74:498:20Waning Gibbous20Tue
21Wed2:0710.52:439.68:050.68:161.74:498:20Waning Gibbous21Wed
22Thu2:4710.33:249.68:450.78:591.84:498:21Waning Gibbous22Thu
23Fri3:3110.14:079.79:260.89:461.74:498:21Third Quarter23Fri
24Sat4:189.94:549.810:110.810:371.54:508:21Third Quarter24Sat
25Sun5:099.85:4310.110:590.811:311.34:508:21Third Quarter25Sun
26Mon6:049.86:3510.511:500.84:518:21Third Quarter26Mon
27Tue7:029.97:2910.912:280.812:440.74:518:21Waning Crescent27Tue
28Wed8:0110.18:2311.51:260.31:400.54:518:21Waning Crescent28Wed
29Thu8:5910.49:1712.02:23-0.32:350.24:528:21Waning Crescent29Thu
30Fri9:5610.810:1112.53:19-0.93:310.04:528:21New Moon30Fri
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 8:10 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 100% 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 Full Moon (100% 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