Tides Today & Tomorrow in Southwest Harbor, ME

TIDE TIMES for Friday, June 19, 2026
The tide is currently rising in Southwest Harbor, ME.
Next low tide (tomorrow) : 9:24 am (-0.3 ft)
Next high tide (tomorrow) : in 4h 30m at 3:25 am (11.4 ft)
Sunset today : 8:20 pm
Sunrise tomorrow : 4:49 am
Moon phase : Waxing Crescent (27% illuminated)
Tide Station Location : Station #8413564
Common Questions About Tides

Southwest Harbor, ME Tides - Dec 2012

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat12:029.712:0610.65:341.36:040.36:493:55Waning Gibbous1Sat
2Sun12:399.612:4310.56:111.46:410.46:503:55Waning Gibbous2Sun
3Mon1:179.61:2310.36:501.57:200.56:513:55Waning Gibbous3Mon
4Tue1:579.62:0610.17:331.58:020.66:523:54Waning Gibbous4Tue
5Wed2:419.62:5310.08:201.58:480.76:533:54Third Quarter5Wed
6Thu3:299.83:469.89:121.39:380.76:543:54Third Quarter6Thu
7Fri4:2110.04:449.810:091.110:320.66:553:54Third Quarter7Fri
8Sat5:1610.45:459.911:090.711:280.56:563:54Waning Crescent8Sat
9Sun6:1310.96:4610.112:100.16:573:54Waning Crescent9Sun
10Mon7:1011.57:4610.512:260.31:09-0.56:583:54Waning Crescent10Mon
11Tue8:0512.18:4310.91:230.02:06-1.16:593:54Waning Crescent11Tue
12Wed9:0012.69:3811.22:19-0.43:01-1.67:003:54New Moon12Wed
13Thu9:5312.910:3211.43:14-0.63:55-1.97:003:54New Moon13Thu
14Fri10:4713.011:2511.54:09-0.74:48-2.07:013:54New Moon14Fri
15Sat11:4012.85:03-0.75:41-1.87:023:55Waxing Crescent15Sat
16Sun12:1911.412:3512.55:58-0.56:35-1.47:033:55Waxing Crescent16Sun
17Mon1:1311.21:3111.96:55-0.27:29-1.07:033:55Waxing Crescent17Mon
18Tue2:0911.02:2811.27:530.18:25-0.47:043:56First Quarter18Tue
19Wed3:0610.73:2810.58:530.59:210.27:043:56First Quarter19Wed
20Thu4:0410.44:309.99:550.710:190.77:053:56First Quarter20Thu
21Fri5:0310.25:329.510:570.911:171.07:053:57First Quarter21Fri
22Sat6:0010.16:339.211:570.97:063:57Waxing Gibbous22Sat
23Sun6:5510.17:309.212:131.212:540.77:063:58Waxing Gibbous23Sun
24Mon7:4510.28:219.31:061.31:450.57:073:59Waxing Gibbous24Mon
25Tue8:3210.49:069.41:541.32:310.47:073:59Waxing Gibbous25Tue
26Wed9:1410.69:489.52:391.23:140.27:074:00Full Moon26Wed
27Thu9:5410.710:269.63:201.13:530.17:084:01Full Moon27Thu
28Fri10:3110.811:039.73:581.14:290.07:084:01Full Moon28Fri
29Sat11:0710.811:389.84:341.05:040.07:084:02Full Moon29Sat
30Sun11:4310.85:101.05:390.07:084:03Waning Gibbous30Sun
31Mon12:139.912:1910.85:471.06:140.07:084:04Waning Gibbous31Mon
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 6:24 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 27% 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 Crescent (27% 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