Tides Today & Tomorrow in Southwest Harbor, ME

TIDE TIMES for Monday, June 22, 2026
The tide is currently rising in Southwest Harbor, ME.
Next low tide : 11:52 pm (0.9 ft)
Next high tide : in 21m at 5:59 pm (10.5 ft)
Sunset today : 8:21 pm
Sunrise tomorrow : 4:49 am
Moon phase : First Quarter (58% illuminated)
Tide Station Location : Station #8413564
Common Questions About Tides

Southwest Harbor, ME Tides - Mar 2008

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat5:089.15:548.011:141.711:272.36:095:21Third Quarter1Sat
2Sun6:099.16:538.212:141.56:075:23Waning Crescent2Sun
3Mon7:069.57:468.612:262.11:091.16:055:24Waning Crescent3Mon
4Tue7:589.98:339.21:191.71:570.76:045:25Waning Crescent4Tue
5Wed8:4510.59:159.82:081.12:400.26:025:27Waning Crescent5Wed
6Thu9:2911.09:5510.52:520.53:21-0.36:005:28New Moon6Thu
7Fri10:1111.310:3411.13:35-0.14:00-0.65:585:29New Moon7Fri
8Sat10:5311.611:1511.54:18-0.64:40-0.85:565:30New Moon8Sat
9Sun12:3711.66:01-0.96:21-0.86:556:32Waxing Crescent9Sun
10Mon12:5611.81:2311.46:47-1.17:05-0.66:536:33Waxing Crescent10Mon
11Tue1:4111.92:1211.07:36-1.17:52-0.26:516:34Waxing Crescent11Tue
12Wed2:2911.73:0510.58:28-0.88:440.36:496:35Waxing Crescent12Wed
13Thu3:2311.44:049.99:26-0.49:420.86:476:37First Quarter13Thu
14Fri4:2410.95:119.410:310.110:491.26:466:38First Quarter14Fri
15Sat5:3210.56:249.111:420.46:446:39First Quarter15Sat
16Sun6:4510.37:359.212:021.312:530.46:426:41Waxing Gibbous16Sun
17Mon7:5610.48:409.61:141.21:590.26:406:42Waxing Gibbous17Mon
18Tue8:5910.69:3610.02:190.82:570.06:386:43Waxing Gibbous18Tue
19Wed9:5410.910:2410.43:170.43:48-0.26:366:44Waxing Gibbous19Wed
20Thu10:4311.011:0710.84:070.04:32-0.36:356:46Full Moon20Thu
21Fri11:2711.011:4610.94:52-0.25:13-0.26:336:47Full Moon21Fri
22Sat12:0810.85:34-0.35:510.06:316:48Full Moon22Sat
23Sun12:2310.912:4710.66:13-0.36:270.36:296:49Full Moon23Sun
24Mon12:5910.81:2510.26:51-0.17:030.76:276:50Waning Gibbous24Mon
25Tue1:3410.62:039.87:290.27:391.16:256:52Waning Gibbous25Tue
26Wed2:1110.32:439.48:080.58:171.56:246:53Waning Gibbous26Wed
27Thu2:5110.03:268.98:490.98:591.96:226:54Waning Gibbous27Thu
28Fri3:359.64:148.69:361.29:472.26:206:55Third Quarter28Fri
29Sat4:259.35:088.310:281.510:412.36:186:57Third Quarter29Sat
30Sun5:219.26:078.311:261.611:412.36:166:58Third Quarter30Sun
31Mon6:219.27:068.512:251.56:146:59Third Quarter31Mon
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 8:55 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 neap phase. Tonight's moon is 58% 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 minimum.

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 First Quarter (58% illuminated). This places Southwest Harbor, ME in a neap tide cycle, so tidal ranges are near their weekly minimum 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