Tides Today & Tomorrow in Southwest Harbor, ME

TIDE TIMES for Saturday, July 4, 2026
The tide is currently rising in Southwest Harbor, ME.
Next low tide : 8:08 pm (1.5 ft)
Next high tide : in 1h 35m at 2:33 pm (9.9 ft)
Sunset today : 8:20 pm
Sunrise tomorrow : 4:55 am
Moon phase : Waning Gibbous (81% illuminated)
Tide Station Location : Station #8413564
Common Questions About Tides

Southwest Harbor, ME Tides - Dec 1994

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu8:2612.39:0211.21:45-0.32:25-1.46:483:55New Moon1Thu
2Fri9:1912.89:5611.52:39-0.63:19-1.86:493:55New Moon2Fri
3Sat10:1113.010:4911.63:33-0.84:12-2.06:503:55New Moon3Sat
4Sun11:0413.011:4311.64:27-0.85:05-2.06:523:54Waxing Crescent4Sun
5Mon11:5812.85:21-0.65:59-1.76:533:54Waxing Crescent5Mon
6Tue12:3711.412:5312.36:16-0.46:53-1.36:543:54Waxing Crescent6Tue
7Wed1:3211.11:4911.77:130.07:48-0.76:553:54Waxing Crescent7Wed
8Thu2:2910.72:4811.08:130.48:45-0.26:563:54First Quarter8Thu
9Fri3:2710.43:4810.49:140.79:430.36:563:54First Quarter9Fri
10Sat4:2610.24:519.910:160.910:410.76:573:54First Quarter10Sat
11Sun5:2510.15:539.511:171.011:371.06:583:54First Quarter11Sun
12Mon6:2110.16:519.412:160.96:593:54Waxing Gibbous12Mon
13Tue7:1310.27:459.312:321.21:100.77:003:54Waxing Gibbous13Tue
14Wed8:0110.38:349.41:221.21:590.57:013:54Waxing Gibbous14Wed
15Thu8:4510.59:179.52:081.22:430.37:013:54Waxing Gibbous15Thu
16Fri9:2510.69:589.62:501.13:240.27:023:55Full Moon16Fri
17Sat10:0410.810:369.73:301.14:020.17:033:55Full Moon17Sat
18Sun10:4010.811:129.84:071.14:380.07:033:55Full Moon18Sun
19Mon11:1610.911:489.84:431.15:140.07:043:56Full Moon19Mon
20Tue11:5210.85:191.15:490.07:053:56Waning Gibbous20Tue
21Wed12:249.912:2910.85:571.16:260.17:053:57Waning Gibbous21Wed
22Thu1:0110.01:0910.76:361.07:040.17:063:57Waning Gibbous22Thu
23Fri1:4210.11:5310.57:201.07:470.27:063:58Waning Gibbous23Fri
24Sat2:2610.22:4110.38:080.98:330.27:073:58Third Quarter24Sat
25Sun3:1510.33:3610.19:020.89:250.37:073:59Third Quarter25Sun
26Mon4:0910.54:369.910:010.610:210.47:073:59Third Quarter26Mon
27Tue5:0710.85:409.911:040.311:220.37:084:00Waning Crescent27Tue
28Wed6:0711.26:4510.112:08-0.27:084:01Waning Crescent28Wed
29Thu7:0811.67:4710.412:240.21:10-0.77:084:02Waning Crescent29Thu
30Fri8:0712.18:4610.81:25-0.12:09-1.27:084:02Waning Crescent30Fri
31Sat9:0412.59:4411.22:23-0.43:05-1.67:084:03New Moon31Sat
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 5:20 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 81% 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 Gibbous (81% 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