Tides Today & Tomorrow in Southwest Harbor, ME

TIDE TIMES for Monday, June 29, 2026
The tide is currently rising in Southwest Harbor, ME.
Next low tide : 4:56 pm (1.7 ft)
Next high tide : in 1h 33m at 11:28 am (9.3 ft)
Sunset today : 8:21 pm
Sunrise tomorrow : 4:52 am
Moon phase : Full Moon (100% illuminated)
Tide Station Location : Station #8413564
Common Questions About Tides

Southwest Harbor, ME Tides - Jan 2000

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat6:4810.27:199.412:050.912:440.77:084:04Waning Crescent1Sat
2Sun7:3910.38:119.412:581.01:360.57:084:05Waning Crescent2Sun
3Mon8:2510.48:589.51:471.12:230.37:084:06Waning Crescent3Mon
4Tue9:0810.69:419.62:321.03:060.17:084:07New Moon4Tue
5Wed9:4710.710:209.73:131.03:450.07:084:08New Moon5Wed
6Thu10:2510.810:579.73:521.04:230.07:084:09New Moon6Thu
7Fri11:0110.811:329.74:281.04:580.07:084:10New Moon7Fri
8Sat11:3610.85:041.05:330.07:084:11New Moon8Sat
9Sun12:079.812:1210.85:401.06:090.17:084:12Waxing Crescent9Sun
10Mon12:439.812:5010.76:171.16:450.17:074:13Waxing Crescent10Mon
11Tue1:219.81:3010.56:571.17:240.27:074:14Waxing Crescent11Tue
12Wed2:029.92:1410.37:401.08:070.37:074:15Waxing Crescent12Wed
13Thu2:4710.03:0410.18:301.08:550.47:064:16First Quarter13Thu
14Fri3:3710.13:599.99:250.89:470.57:064:18First Quarter14Fri
15Sat4:3210.35:019.710:250.610:450.57:054:19First Quarter15Sat
16Sun5:3110.66:069.811:290.311:470.47:054:20Waxing Gibbous16Sun
17Mon6:3211.17:1110.012:33-0.27:044:21Waxing Gibbous17Mon
18Tue7:3211.58:1310.412:490.21:35-0.87:044:23Waxing Gibbous18Tue
19Wed8:3112.09:1110.81:50-0.12:34-1.37:034:24Full Moon19Wed
20Thu9:2712.510:0611.12:47-0.43:29-1.77:024:25Full Moon20Thu
21Fri10:2112.710:5911.43:43-0.74:22-1.97:014:27Full Moon21Fri
22Sat11:1412.711:5111.44:37-0.85:14-1.87:014:28Full Moon22Sat
23Sun12:0712.55:30-0.76:05-1.67:004:29Waning Gibbous23Sun
24Mon12:4211.312:5912.06:23-0.56:56-1.26:594:30Waning Gibbous24Mon
25Tue1:3311.11:5211.47:17-0.27:47-0.66:584:32Waning Gibbous25Tue
26Wed2:2510.82:4610.78:120.28:390.06:574:33Third Quarter26Wed
27Thu3:1810.43:4310.09:080.69:320.66:564:35Third Quarter27Thu
28Fri4:1310.14:429.410:070.910:281.16:554:36Third Quarter28Fri
29Sat5:109.85:439.011:071.011:241.46:544:37Third Quarter29Sat
30Sun6:069.76:438.812:061.06:534:39Waning Crescent30Sun
31Mon7:019.87:388.912:201.51:010.96:524:40Waning Crescent31Mon
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 2:12 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 100% 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 Full Moon (100% 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