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 (tomorrow) : 3:37 am (-0.8 ft)
Next high tide : in 5h 44m at 9:30 pm (12.0 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 - Nov 2069

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri12:2712.012:4313.06:06-0.96:43-1.97:115:22Waning Gibbous1Fri
2Sat1:2111.71:3712.77:00-0.67:38-1.57:125:20Waning Gibbous2Sat
3Sun1:1711.31:3412.16:57-0.17:36-1.06:134:19Waning Gibbous3Sun
4Mon2:1610.82:3411.57:570.38:37-0.46:154:18Third Quarter4Mon
5Tue3:1810.43:3810.99:010.79:390.06:164:17Third Quarter5Tue
6Wed4:2210.24:4410.410:060.910:410.46:174:15Third Quarter6Wed
7Thu5:2510.15:4910.111:111.011:410.66:194:14Third Quarter7Thu
8Fri6:2410.16:4910.012:120.86:204:13Waning Crescent8Fri
9Sat7:1810.37:4410.012:370.61:080.66:214:12Waning Crescent9Sat
10Sun8:0610.58:3310.01:270.71:570.46:234:11Waning Crescent10Sun
11Mon8:4910.79:1710.12:130.72:420.26:244:10Waning Crescent11Mon
12Tue9:2910.89:5710.12:540.73:230.16:254:08New Moon12Tue
13Wed10:0610.910:3510.03:330.84:010.16:274:07New Moon13Wed
14Thu10:4110.911:1110.04:090.94:370.16:284:06New Moon14Thu
15Fri11:1610.811:479.84:441.15:120.26:294:05New Moon15Fri
16Sat11:5110.75:191.25:480.36:314:05Waxing Crescent16Sat
17Sun12:239.712:2810.65:551.36:250.46:324:04Waxing Crescent17Sun
18Mon1:019.61:0710.46:341.57:050.56:334:03Waxing Crescent18Mon
19Tue1:429.51:5010.37:161.57:480.66:354:02Waxing Crescent19Tue
20Wed2:269.52:3810.28:031.58:350.66:364:01First Quarter20Wed
21Thu3:169.63:3110.18:561.49:260.66:374:00First Quarter21Thu
22Fri4:099.84:2910.09:541.210:220.56:384:00First Quarter22Fri
23Sat5:0610.25:3110.110:550.811:190.36:403:59Waxing Gibbous23Sat
24Sun6:0310.76:3310.411:560.26:413:58Waxing Gibbous24Sun
25Mon7:0011.47:3310.812:170.012:56-0.46:423:58Waxing Gibbous25Mon
26Tue7:5512.08:3011.21:14-0.31:53-1.16:433:57Waxing Gibbous26Tue
27Wed8:4912.69:2511.52:09-0.62:48-1.66:443:57Full Moon27Wed
28Thu9:4212.910:1911.73:03-0.83:42-1.96:463:56Full Moon28Thu
29Fri10:3413.111:1211.73:56-0.94:34-2.06:473:56Full Moon29Fri
30Sat11:2713.04:49-0.85:28-1.96:483:55Waning Gibbous30Sat
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 12:33 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 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