Tides Today & Tomorrow in Southwest Harbor, ME

TIDE TIMES for Sunday, July 5, 2026
The tide is currently rising in Southwest Harbor, ME.
Next low tide : 8:52 pm (1.3 ft)
Next high tide : in 1h 18m at 3:13 pm (10.0 ft)
Sunset today : 8:20 pm
Sunrise tomorrow : 4:55 am
Moon phase : Waning Gibbous (72% illuminated)
Tide Station Location : Station #8413564
Common Questions About Tides

Southwest Harbor, ME Tides - Mar 1993

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon3:239.93:598.89:221.09:361.66:095:21First Quarter1Mon
2Tue4:199.85:008.810:221.010:371.56:085:22First Quarter2Tue
3Wed5:2210.06:059.011:260.711:421.26:065:23Waxing Gibbous3Wed
4Thu6:2610.47:089.512:290.36:045:25Waxing Gibbous4Thu
5Fri7:2810.98:0510.312:460.71:28-0.36:025:26Waxing Gibbous5Fri
6Sat8:2611.68:5911.11:460.02:22-0.96:015:27Waxing Gibbous6Sat
7Sun9:2012.19:4911.82:42-0.83:13-1.45:595:29Full Moon7Sun
8Mon10:1312.510:3812.43:35-1.44:02-1.75:575:30Full Moon8Mon
9Tue11:0412.611:2712.64:26-1.84:51-1.85:555:31Full Moon9Tue
10Wed11:5512.45:18-2.05:40-1.55:545:32Waning Gibbous10Wed
11Thu12:1712.612:4711.96:10-1.86:31-1.15:525:34Waning Gibbous11Thu
12Fri1:0712.31:4111.37:04-1.47:23-0.45:505:35Waning Gibbous12Fri
13Sat2:0111.82:3810.68:00-0.88:200.25:485:36Third Quarter13Sat
14Sun2:5811.23:399.99:00-0.29:210.85:465:38Third Quarter14Sun
15Mon4:0010.54:459.410:040.310:261.25:445:39Third Quarter15Mon
16Tue5:0610.15:519.111:100.711:321.45:435:40Third Quarter16Tue
17Wed6:129.96:549.112:130.85:415:41Waning Crescent17Wed
18Thu7:149.97:509.312:341.31:100.75:395:43Waning Crescent18Thu
19Fri8:0810.08:389.61:301.12:010.65:375:44Waning Crescent19Fri
20Sat8:5510.29:199.92:190.82:440.55:355:45Waning Crescent20Sat
21Sun9:3710.39:5710.23:020.53:230.45:335:46New Moon21Sun
22Mon10:1510.410:3110.43:410.33:590.45:325:48New Moon22Mon
23Tue10:5010.411:0410.54:180.24:320.45:305:49New Moon23Tue
24Wed11:2510.311:3610.64:520.15:040.65:285:50New Moon24Wed
25Thu11:5910.15:260.25:360.75:265:51Waxing Crescent25Thu
26Fri12:0810.612:3410.06:000.26:100.95:245:53Waxing Crescent26Fri
27Sat12:4310.51:119.76:360.36:461.15:225:54Waxing Crescent27Sat
28Sun1:2110.51:529.57:160.47:271.25:215:55Waxing Crescent28Sun
29Mon2:0410.32:399.38:020.58:141.45:195:56First Quarter29Mon
30Tue2:5310.23:339.28:540.69:101.45:175:57First Quarter30Tue
31Wed3:5010.14:339.29:530.610:121.35:155:59First Quarter31Wed
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8413564)

Common Questions About Southwest Harbor, ME Tides

Show All
What time does the tide turn (slack tide) in Southwest Harbor, ME today?

Slack tide in Southwest Harbor, ME is approximately 6:02 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 transitional phase. Tonight's moon is 72% 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 shifting between spring and neap.

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 Gibbous (72% illuminated). This places Southwest Harbor, ME in a transitional tide cycle, so tidal ranges are shifting between spring and neap 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