Tides Today & Tomorrow in Southwest Harbor, ME

TIDE TIMES for Sunday, July 12, 2026
The tide is currently rising in Southwest Harbor, ME.
Next low tide : 2:47 pm (0.6 ft)
Next high tide : in 6h 19m at 9:15 am (10.0 ft)
Sunset today : 8:16 pm
Sunrise tomorrow : 5:01 am
Moon phase : Waning Crescent (5% illuminated)
Tide Station Location : Station #8413564
Common Questions About Tides

Southwest Harbor, ME Tides - Jan 2069

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue4:2311.04:5510.210:200.110:410.27:084:05First Quarter1Tue
2Wed5:2611.06:0310.011:260.011:450.37:084:06Waxing Gibbous2Wed
3Thu6:2911.27:0910.012:32-0.37:084:07Waxing Gibbous3Thu
4Fri7:3111.48:1010.212:480.31:33-0.67:084:08Waxing Gibbous4Fri
5Sat8:2811.79:0610.41:480.22:30-0.97:084:09Waxing Gibbous5Sat
6Sun9:2111.89:5810.62:430.03:22-1.07:084:10Full Moon6Sun
7Mon10:1111.910:4610.73:35-0.14:10-1.17:084:11Full Moon7Mon
8Tue10:5811.811:3110.74:23-0.14:56-0.97:074:12Full Moon8Tue
9Wed11:4311.55:090.15:39-0.77:074:13Waning Gibbous9Wed
10Thu12:1410.612:2611.25:530.36:21-0.37:074:14Waning Gibbous10Thu
11Fri12:5610.41:0910.76:370.57:030.17:064:15Waning Gibbous11Fri
12Sat1:3910.21:5310.27:210.87:440.57:064:17Waning Gibbous12Sat
13Sun2:219.92:389.78:071.18:270.97:054:18Third Quarter13Sun
14Mon3:069.73:279.28:551.39:131.37:054:19Third Quarter14Mon
15Tue3:549.54:198.89:471.510:021.67:044:20Third Quarter15Tue
16Wed4:459.45:168.610:421.510:551.77:044:22Third Quarter16Wed
17Thu5:399.56:148.511:391.411:501.77:034:23Waning Crescent17Thu
18Fri6:329.67:098.712:341.17:034:24Waning Crescent18Fri
19Sat7:2410.08:019.012:431.61:250.77:024:25Waning Crescent19Sat
20Sun8:1310.48:489.51:341.32:130.37:014:27Waning Crescent20Sun
21Mon8:5911.09:3210.02:210.92:58-0.37:004:28New Moon21Mon
22Tue9:4311.510:1510.53:060.43:41-0.77:004:29New Moon22Tue
23Wed10:2711.910:5810.93:510.04:23-1.16:594:31New Moon23Wed
24Thu11:1212.111:4211.34:36-0.45:07-1.36:584:32New Moon24Thu
25Fri11:5812.15:22-0.75:51-1.46:574:33Waxing Crescent25Fri
26Sat12:2811.612:4712.06:11-0.86:38-1.26:564:35Waxing Crescent26Sat
27Sun1:1611.71:3811.67:03-0.77:28-0.96:554:36Waxing Crescent27Sun
28Mon2:0711.62:3411.17:58-0.68:21-0.56:544:38First Quarter28Mon
29Tue3:0311.43:3410.58:58-0.39:200.06:534:39First Quarter29Tue
30Wed4:0311.14:4010.010:03-0.110:230.46:524:40First Quarter30Wed
31Thu5:0710.95:499.711:110.011:300.66:514:42Waxing 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 12:01 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 5% 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 (5% 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