Tides Today & Tomorrow in Southwest Harbor, ME

TIDE TIMES for Friday, July 24, 2026
The tide is currently falling in Southwest Harbor, ME.
Next low tide (tomorrow) : in 5h 24m at 2:07 am (1.1 ft)
Next high tide (tomorrow) : 8:45 am (8.7 ft)
Sunset today : 8:07 pm
Sunrise tomorrow : 5:12 am
Moon phase : Waxing Gibbous (79% illuminated)
Tide Station Location : Station #8413564
Common Questions About Tides

Southwest Harbor, ME Tides - Dec 2079

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri3:508.94:009.49:262.19:571.26:493:55First Quarter1Fri
2Sat4:419.24:569.410:221.910:481.16:503:55First Quarter2Sat
3Sun5:329.65:539.511:191.411:390.96:513:55Waxing Gibbous3Sun
4Mon6:2310.16:499.812:140.86:523:54Waxing Gibbous4Mon
5Tue7:1310.87:4310.112:300.61:080.26:533:54Waxing Gibbous5Tue
6Wed8:0211.48:3610.51:210.42:00-0.56:543:54Waxing Gibbous6Wed
7Thu8:5112.09:2810.82:110.12:51-1.16:553:54Full Moon7Thu
8Fri9:4012.510:2010.93:01-0.13:42-1.56:563:54Full Moon8Fri
9Sat10:3112.711:1211.03:52-0.24:34-1.76:573:54Full Moon9Sat
10Sun11:2412.74:45-0.25:28-1.66:583:54Waning Gibbous10Sun
11Mon12:0610.912:1812.45:400.06:23-1.36:583:54Waning Gibbous11Mon
12Tue1:0210.71:1612.06:370.27:20-0.96:593:54Waning Gibbous12Tue
13Wed2:0010.52:1611.47:380.58:19-0.57:003:54Third Quarter13Wed
14Thu3:0110.33:1910.88:420.79:19-0.17:013:54Third Quarter14Thu
15Fri4:0310.24:2510.39:480.910:200.37:013:54Third Quarter15Fri
16Sat5:0510.15:319.910:540.911:200.77:023:55Third Quarter16Sat
17Sun6:0410.26:349.611:580.77:033:55Waning Crescent17Sun
18Mon7:0010.37:339.512:170.912:560.57:033:55Waning Crescent18Mon
19Tue7:5110.58:269.51:111.01:490.37:043:56Waning Crescent19Tue
20Wed8:3710.69:139.52:001.12:370.27:053:56Waning Crescent20Wed
21Thu9:2010.79:579.52:451.23:210.17:053:57New Moon21Thu
22Fri10:0010.710:369.53:271.34:010.17:063:57New Moon22Fri
23Sat10:3810.711:149.54:061.34:390.17:063:58New Moon23Sat
24Sun11:1510.611:519.44:431.45:160.27:063:58New Moon24Sun
25Mon11:5210.55:201.55:520.37:073:59Waxing Crescent25Mon
26Tue12:279.312:2910.45:571.56:290.57:074:00Waxing Crescent26Tue
27Wed1:049.31:0710.36:351.67:060.67:074:00Waxing Crescent27Wed
28Thu1:429.31:4710.17:151.67:440.67:084:01Waxing Crescent28Thu
29Fri2:239.42:319.97:591.68:260.77:084:02First Quarter29Fri
30Sat3:069.53:199.68:471.59:110.87:084:03First Quarter30Sat
31Sun3:539.74:139.59:401.39:551.07:084:03First Quarter31Sun
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 5:26 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 transitional phase. Tonight's moon is 79% 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 Waxing Gibbous (79% 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