Tides Today & Tomorrow in Southwest Harbor, ME

TIDE TIMES for Sunday, July 5, 2026
The tide is currently falling in Southwest Harbor, ME.
Next low tide : in 5h 05m at 8:34 am (0.5 ft)
Next high tide : 3:13 pm (10.0 ft)
Sunset today : 8:20 pm
Sunrise tomorrow : 4:55 am
Moon phase : Waning Gibbous (72% illuminated)
Tide Station Location : Station #8413564
Common Questions About Tides

Southwest Harbor, ME Tides - Dec 1993

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed11:3711.15:031.15:36-0.16:493:55Waning Gibbous1Wed
2Thu12:129.912:1811.15:431.06:17-0.16:503:55Waning Gibbous2Thu
3Fri12:5310.01:0111.06:271.07:01-0.16:513:55Waning Gibbous3Fri
4Sat1:3810.11:5010.87:141.07:480.06:523:54Waning Gibbous4Sat
5Sun2:2710.22:4310.68:080.98:390.16:533:54Third Quarter5Sun
6Mon3:2110.33:4110.49:060.89:350.16:543:54Third Quarter6Mon
7Tue4:1810.54:4410.310:090.610:340.26:553:54Third Quarter7Tue
8Wed5:1810.85:5010.211:130.211:340.26:563:54Waning Crescent8Wed
9Thu6:1911.26:5410.312:17-0.26:573:54Waning Crescent9Thu
10Fri7:1811.77:5510.612:350.11:18-0.76:583:54Waning Crescent10Fri
11Sat8:1412.18:5310.81:33-0.12:16-1.26:583:54New Moon11Sat
12Sun9:0912.49:4711.02:29-0.33:10-1.46:593:54New Moon12Sun
13Mon10:0112.510:3911.13:23-0.34:02-1.57:003:54New Moon13Mon
14Tue10:5112.411:2811.04:15-0.34:52-1.47:013:54New Moon14Tue
15Wed11:4012.25:05-0.15:41-1.17:023:54Waxing Crescent15Wed
16Thu12:1710.812:2911.75:550.16:29-0.77:023:55Waxing Crescent16Thu
17Fri1:0610.51:1811.26:450.57:17-0.27:033:55Waxing Crescent17Fri
18Sat1:5410.22:0810.67:350.88:050.37:043:55Waxing Crescent18Sat
19Sun2:449.93:0010.08:281.28:530.77:043:56First Quarter19Sun
20Mon3:349.73:549.49:221.49:441.27:053:56First Quarter20Mon
21Tue4:269.54:509.010:181.610:351.57:053:57First Quarter21Tue
22Wed5:199.55:478.811:141.511:281.77:063:57First Quarter22Wed
23Thu6:119.56:448.712:101.47:063:58Waxing Gibbous23Thu
24Fri7:029.77:368.812:201.71:021.17:073:58Waxing Gibbous24Fri
25Sat7:4910.08:259.01:101.61:500.87:073:59Waxing Gibbous25Sat
26Sun8:3410.39:099.31:561.52:340.57:074:00Waxing Gibbous26Sun
27Mon9:1610.79:509.62:401.33:160.17:084:00Full Moon27Mon
28Tue9:5611.010:309.93:211.03:56-0.27:084:01Full Moon28Tue
29Wed10:3611.211:0910.14:010.84:35-0.47:084:02Full Moon29Wed
30Thu11:1711.411:5010.44:420.65:15-0.67:084:03Full Moon30Thu
31Fri11:5911.55:240.45:56-0.77:084:03Waning Gibbous31Fri
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 11:53 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 72% 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 Waning Gibbous (72% 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