Tides Today & Tomorrow in Southwest Harbor, ME

TIDE TIMES for Friday, July 10, 2026
The tide is currently rising in Southwest Harbor, ME.
Next low tide (tomorrow) : 1:35 am (0.0 ft)
Next high tide : in 2h 04m at 7:29 pm (11.3 ft)
Sunset today : 8:17 pm
Sunrise tomorrow : 4:59 am
Moon phase : Waning Crescent (20% illuminated)
Tide Station Location : Station #8413564
Common Questions About Tides

Southwest Harbor, ME Tides - Jan 1985

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue6:069.36:378.612:031.67:084:05Waxing Gibbous1Tue
2Wed6:559.67:308.712:131.812:551.27:084:05Waxing Gibbous2Wed
3Thu7:429.98:198.91:021.71:440.97:084:06Waxing Gibbous3Thu
4Fri8:2710.29:049.21:491.62:290.57:084:07Waxing Gibbous4Fri
5Sat9:0910.69:479.42:331.43:120.17:084:08Full Moon5Sat
6Sun9:5111.010:289.73:151.13:53-0.37:084:09Full Moon6Sun
7Mon10:3311.411:1010.03:570.94:35-0.67:084:10Full Moon7Mon
8Tue11:1611.611:5310.24:400.65:18-0.87:084:12Full Moon8Tue
9Wed12:0111.75:250.46:02-0.87:074:13Waning Gibbous9Wed
10Thu12:3810.412:4911.76:120.36:48-0.87:074:14Waning Gibbous10Thu
11Fri1:2510.61:3911.47:030.27:36-0.77:074:15Waning Gibbous11Fri
12Sat2:1610.72:3411.07:580.28:28-0.47:064:16Third Quarter12Sat
13Sun3:0910.83:3210.58:570.29:23-0.17:064:17Third Quarter13Sun
14Mon4:0610.84:3610.110:000.210:220.37:054:18Third Quarter14Mon
15Tue5:0710.85:439.711:060.211:240.67:054:20Third Quarter15Tue
16Wed6:0910.96:509.612:120.07:044:21Waning Crescent16Wed
17Thu7:1111.07:549.712:280.71:16-0.27:044:22Waning Crescent17Thu
18Fri8:0911.28:529.81:290.72:14-0.57:034:23Waning Crescent18Fri
19Sat9:0411.49:4510.02:260.63:08-0.77:024:25New Moon19Sat
20Sun9:5511.510:3310.13:180.53:57-0.77:024:26New Moon20Sun
21Mon10:4311.411:1810.14:070.54:43-0.67:014:27New Moon21Mon
22Tue11:2711.34:530.55:26-0.47:004:29New Moon22Tue
23Wed12:0110.112:1011.05:360.66:07-0.26:594:30Waxing Crescent23Wed
24Thu12:429.912:5210.66:190.86:470.26:594:31Waxing Crescent24Thu
25Fri1:229.81:3410.27:011.07:260.56:584:33Waxing Crescent25Fri
26Sat2:029.72:169.77:451.28:060.96:574:34Waxing Crescent26Sat
27Sun2:449.53:029.28:301.48:481.36:564:35First Quarter27Sun
28Mon3:289.33:528.89:191.69:341.76:554:37First Quarter28Mon
29Tue4:169.24:468.410:121.710:241.96:544:38First Quarter29Tue
30Wed5:089.25:458.211:091.611:192.16:534:40First Quarter30Wed
31Thu6:029.36:448.312:071.46:524:41Waxing Gibbous31Thu
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 10:32 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 spring phase. Tonight's moon is 20% 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 Waning Crescent (20% 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