Tides Today & Tomorrow in Southwest Harbor, ME

TIDE TIMES for Wednesday, July 8, 2026
The tide is currently falling in Southwest Harbor, ME.
Next low tide : in 5h 22m at 10:49 am (0.8 ft)
Next high tide : 5:34 pm (10.7 ft)
Sunset today : 8:18 pm
Sunrise tomorrow : 4:57 am
Moon phase : Third Quarter (41% illuminated)
Tide Station Location : Station #8413564
Common Questions About Tides

Southwest Harbor, ME Tides - Jul 1988

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri12:4010.56:02-0.86:120.54:538:20Waning Gibbous1Fri
2Sat12:4912.21:3010.86:52-1.07:060.44:538:20Waning Gibbous2Sat
3Sun1:4212.12:2211.07:43-0.98:010.34:548:20Waning Gibbous3Sun
4Mon2:3711.83:1611.18:35-0.89:000.24:558:20Waning Gibbous4Mon
5Tue3:3411.44:1111.29:29-0.510:000.24:558:19Third Quarter5Tue
6Wed4:3410.95:0811.210:24-0.111:020.34:568:19Third Quarter6Wed
7Thu5:3710.46:0711.211:220.34:578:19Third Quarter7Thu
8Fri6:4110.07:0611.112:060.212:210.74:588:18Waning Crescent8Fri
9Sat7:459.78:0411.11:090.21:211.04:588:18Waning Crescent9Sat
10Sun8:469.69:0011.12:090.12:191.24:598:17Waning Crescent10Sun
11Mon9:439.69:5211.13:050.03:141.25:008:17Waning Crescent11Mon
12Tue10:349.710:4111.13:570.04:041.25:018:16New Moon12Tue
13Wed11:209.711:2611.14:440.04:511.25:028:16New Moon13Wed
14Thu12:039.75:280.15:341.35:028:15New Moon14Thu
15Fri12:0811.012:439.76:090.26:161.35:038:14New Moon15Fri
16Sat12:4810.81:229.76:480.36:551.45:048:13Waxing Crescent16Sat
17Sun1:2710.62:009.87:250.57:351.55:058:13Waxing Crescent17Sun
18Mon2:0610.32:379.88:010.78:151.65:068:12Waxing Crescent18Mon
19Tue2:4610.03:159.88:370.98:571.65:078:11Waxing Crescent19Tue
20Wed3:279.63:559.89:151.29:411.75:088:10First Quarter20Wed
21Thu4:129.34:379.89:551.510:291.75:098:09First Quarter21Thu
22Fri5:009.05:249.810:401.711:211.65:108:08First Quarter22Fri
23Sat5:548.76:159.911:291.95:118:07First Quarter23Sat
24Sun6:528.77:0910.112:171.412:231.95:128:06Waxing Gibbous24Sun
25Mon7:518.88:0510.51:151.11:211.85:138:05Waxing Gibbous25Mon
26Tue8:509.19:0111.02:120.62:181.55:148:04Waxing Gibbous26Tue
27Wed9:459.69:5611.53:080.13:151.15:158:03Full Moon27Wed
28Thu10:3810.110:4912.04:01-0.44:090.65:168:02Full Moon28Thu
29Fri11:2910.611:4112.44:52-0.95:030.25:178:01Full Moon29Fri
30Sat12:1911.15:42-1.25:56-0.25:188:00Full Moon30Sat
31Sun12:3412.51:0911.56:32-1.36:50-0.45:207:59Waning Gibbous31Sun
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 2:11 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 41% 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 Third Quarter (41% 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