Tides Today & Tomorrow in Southwest Harbor, ME

TIDE TIMES for Monday, June 22, 2026
The tide is currently rising in Southwest Harbor, ME.
Next low tide : 11:15 am (0.6 ft)
Next high tide : in 4h 45m at 5:26 am (10.2 ft)
Sunset today : 8:21 pm
Sunrise tomorrow : 4:49 am
Moon phase : First Quarter (58% illuminated)
Tide Station Location : Station #8413564
Common Questions About Tides

Southwest Harbor, ME Tides - Jun 2009

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon6:0710.46:4310.811:580.34:528:10First Quarter1Mon
2Tue7:1210.17:4010.912:360.512:560.54:518:11Waxing Gibbous2Tue
3Wed8:1210.08:3311.01:360.31:520.74:518:11Waxing Gibbous3Wed
4Thu9:099.99:2311.12:320.12:440.94:508:12Waxing Gibbous4Thu
5Fri10:009.910:0911.13:240.03:331.04:508:13Waxing Gibbous5Fri
6Sat10:479.810:5211.14:11-0.14:181.24:508:14Full Moon6Sat
7Sun11:309.811:3311.04:54-0.15:001.34:498:14Full Moon7Sun
8Mon12:119.75:350.15:411.44:498:15Full Moon8Mon
9Tue12:1310.912:509.66:140.26:201.54:498:15Full Moon9Tue
10Wed12:5110.71:289.66:520.46:591.74:498:16Waning Gibbous10Wed
11Thu1:3010.62:069.57:300.67:381.84:488:17Waning Gibbous11Thu
12Fri2:1010.42:469.58:080.78:191.84:488:17Waning Gibbous12Fri
13Sat2:5010.13:269.58:470.89:031.94:488:18Waning Gibbous13Sat
14Sun3:349.94:099.69:281.09:491.84:488:18Third Quarter14Sun
15Mon4:209.64:549.710:111.110:391.74:488:19Third Quarter15Mon
16Tue5:109.45:419.910:571.211:321.44:488:19Third Quarter16Tue
17Wed6:049.36:3110.311:461.24:488:19Third Quarter17Wed
18Thu7:029.47:2410.712:281.112:391.24:488:20Waning Crescent18Thu
19Fri8:009.58:1711.11:240.61:331.14:488:20Waning Crescent19Fri
20Sat8:579.89:1111.62:210.12:290.94:498:20Waning Crescent20Sat
21Sun9:5310.210:0512.13:16-0.53:240.64:498:20New Moon21Sun
22Mon10:4810.511:0012.54:11-0.94:200.34:498:21New Moon22Mon
23Tue11:4210.811:5412.75:05-1.35:150.14:498:21New Moon23Tue
24Wed12:3611.15:58-1.46:110.04:508:21Waxing Crescent24Wed
25Thu12:4912.61:3111.26:52-1.47:08-0.14:508:21Waxing Crescent25Thu
26Fri1:4512.42:2611.37:46-1.28:070.04:508:21Waxing Crescent26Fri
27Sat2:4212.03:2211.38:41-0.99:060.14:518:21Waxing Crescent27Sat
28Sun3:4111.44:1811.29:36-0.510:070.34:518:21First Quarter28Sun
29Mon4:4210.85:1611.010:320.011:090.44:528:21First Quarter29Mon
30Tue5:4410.26:1310.911:290.54:528:21First Quarter30Tue
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 8:20 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 neap phase. Tonight's moon is 58% 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 First Quarter (58% 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