Tides Today & Tomorrow in Southwest Harbor, ME

TIDE TIMES for Sunday, July 5, 2026
The tide is currently falling in Southwest Harbor, ME.
Next low tide : in 5h 51m at 8:34 am (0.5 ft)
Next high tide : 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 - Jan 1994

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat12:3110.712:4311.66:080.26:39-0.77:084:04Waning Gibbous1Sat
2Sun1:1610.91:3211.36:570.17:26-0.67:084:05Waning Gibbous2Sun
3Mon2:0510.92:2411.07:490.18:16-0.47:084:06Third Quarter3Mon
4Tue2:5711.03:2210.68:470.19:11-0.17:084:07Third Quarter4Tue
5Wed3:5411.04:2510.29:490.110:110.27:084:08Third Quarter5Wed
6Thu4:5611.05:329.910:550.111:140.47:084:09Third Quarter6Thu
7Fri5:5911.16:399.912:02-0.17:084:10Waning Crescent7Fri
8Sat7:0311.37:4410.012:190.41:06-0.47:084:11Waning Crescent8Sat
9Sun8:0311.68:4310.31:210.32:05-0.77:074:12Waning Crescent9Sun
10Mon8:5911.89:3710.52:200.13:00-1.07:074:14New Moon10Mon
11Tue9:5111.910:2710.73:14-0.13:51-1.17:074:15New Moon11Tue
12Wed10:4011.911:1310.84:04-0.14:38-1.17:064:16New Moon12Wed
13Thu11:2611.711:5810.74:51-0.15:22-0.97:064:17New Moon13Thu
14Fri12:1011.45:370.16:05-0.67:064:18Waxing Crescent14Fri
15Sat12:4110.612:5411.06:220.36:47-0.27:054:19Waxing Crescent15Sat
16Sun1:2310.41:3810.47:060.67:290.37:044:21Waxing Crescent16Sun
17Mon2:0610.12:239.97:520.98:120.77:044:22Waxing Crescent17Mon
18Tue2:509.93:119.48:391.28:561.27:034:23First Quarter18Tue
19Wed3:379.64:028.99:301.49:451.57:034:25First Quarter19Wed
20Thu4:279.54:588.610:251.510:371.77:024:26First Quarter20Thu
21Fri5:219.45:568.511:211.511:321.87:014:27First Quarter21Fri
22Sat6:159.56:538.512:181.37:004:28Waxing Gibbous22Sat
23Sun7:089.87:468.812:271.71:110.97:004:30Waxing Gibbous23Sun
24Mon7:5810.28:349.21:181.51:590.56:594:31Waxing Gibbous24Mon
25Tue8:4510.79:189.72:061.12:440.06:584:32Waxing Gibbous25Tue
26Wed9:2911.210:0110.22:520.73:27-0.56:574:34Full Moon26Wed
27Thu10:1211.610:4210.73:350.24:08-0.86:564:35Full Moon27Thu
28Fri10:5511.911:2511.14:19-0.24:50-1.16:554:37Full Moon28Fri
29Sat11:4012.05:04-0.55:32-1.26:544:38Waning Gibbous29Sat
30Sun12:0811.412:2611.95:50-0.76:17-1.26:534:39Waning Gibbous30Sun
31Mon12:5411.61:1511.66:40-0.87:05-1.06:524:41Waning Gibbous31Mon
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 11:53 am — 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