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 44m 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 - Nov 2042

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat1:4211.11:5512.17:180.17:59-1.07:105:22Waning Gibbous1Sat
2Sun1:3810.51:5111.57:140.77:58-0.46:124:21Waning Gibbous2Sun
3Mon2:3810.02:5210.88:151.28:590.26:134:20Third Quarter3Mon
4Tue3:429.53:5810.39:191.510:030.66:144:18Third Quarter4Tue
5Wed4:469.35:049.910:261.711:050.96:164:17Third Quarter5Wed
6Thu5:499.36:079.811:301.66:174:16Waning Crescent6Thu
7Fri6:459.57:059.712:031.012:291.46:184:15Waning Crescent7Fri
8Sat7:359.87:569.812:551.01:211.16:204:13Waning Crescent8Sat
9Sun8:1910.18:429.81:410.92:080.86:214:12Waning Crescent9Sun
10Mon8:5810.39:239.82:231.02:500.56:224:11Waning Crescent10Mon
11Tue9:3410.510:029.83:001.03:280.46:244:10New Moon11Tue
12Wed10:0910.610:389.73:361.14:040.36:254:09New Moon12Wed
13Thu10:4210.711:149.64:101.34:390.36:264:08New Moon13Thu
14Fri11:1610.611:509.54:441.45:150.46:284:07New Moon14Fri
15Sat11:5110.55:181.65:510.56:294:06Waxing Crescent15Sat
16Sun12:279.312:2910.45:551.76:310.66:304:05Waxing Crescent16Sun
17Mon1:089.21:1210.36:361.97:150.76:314:04Waxing Crescent17Mon
18Tue1:529.11:5910.27:231.98:030.86:334:03Waxing Crescent18Tue
19Wed2:439.02:5310.18:151.98:570.86:344:02First Quarter19Wed
20Thu3:389.23:5210.09:141.89:530.76:354:02First Quarter20Thu
21Fri4:379.54:5510.110:181.510:520.56:374:01First Quarter21Fri
22Sat5:3610.05:5910.311:220.911:500.26:384:00Waxing Gibbous22Sat
23Sun6:3310.77:0110.612:240.26:393:59Waxing Gibbous23Sun
24Mon7:2811.47:5910.912:46-0.11:23-0.56:403:59Waxing Gibbous24Mon
25Tue8:2012.08:5511.11:40-0.32:18-1.16:423:58Full Moon25Tue
26Wed9:1112.59:4811.32:32-0.43:11-1.66:433:57Full Moon26Wed
27Thu10:0212.810:4111.33:24-0.54:03-1.86:443:57Full Moon27Thu
28Fri10:5212.711:3311.14:15-0.34:55-1.76:453:56Full Moon28Fri
29Sat11:4412.45:07-0.15:47-1.36:463:56Waning Gibbous29Sat
30Sun12:2610.712:3611.96:000.36:41-0.96:473:56Waning Gibbous30Sun
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