Tides Today & Tomorrow in Southwest Harbor, ME

TIDE TIMES for Wednesday, July 8, 2026
The tide is currently falling in Southwest Harbor, ME.
Next low tide : in 1h 38m at 10:49 am (0.8 ft)
Next high tide : 5:34 pm (10.7 ft)
Sunset today : 8:18 pm
Sunrise tomorrow : 4:57 am
Moon phase : Third Quarter (41% illuminated)
Tide Station Location : Station #8413564
Common Questions About Tides

Southwest Harbor, ME Tides - Apr 1988

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri10:0910.210:2410.43:360.63:520.65:136:00Full Moon1Fri
2Sat10:4510.210:5610.64:110.34:240.65:116:01Full Moon2Sat
3Sun12:1910.25:460.25:560.76:097:03Full Moon3Sun
4Mon12:2810.712:5510.16:200.16:290.86:077:04Waning Gibbous4Mon
5Tue1:0210.81:329.96:570.07:061.06:067:05Waning Gibbous5Tue
6Wed1:4010.82:149.77:370.17:461.26:047:06Waning Gibbous6Wed
7Thu2:2210.73:009.48:230.28:331.46:027:07Waning Gibbous7Thu
8Fri3:1110.53:549.29:150.49:281.66:007:09Third Quarter8Fri
9Sat4:0810.44:569.110:150.510:311.65:597:10Third Quarter9Sat
10Sun5:1310.26:039.211:200.611:411.55:577:11Third Quarter10Sun
11Mon6:2310.37:119.612:280.45:557:12Waning Crescent11Mon
12Tue7:3210.68:1310.212:521.01:320.05:537:14Waning Crescent12Tue
13Wed8:3611.09:0910.91:570.42:30-0.45:527:15Waning Crescent13Wed
14Thu9:3411.410:0111.62:57-0.33:23-0.75:507:16Waning Crescent14Thu
15Fri10:2811.610:5012.13:51-1.04:13-0.85:487:17New Moon15Fri
16Sat11:1911.711:3612.34:43-1.45:00-0.85:467:18New Moon16Sat
17Sun12:0811.55:32-1.55:47-0.55:457:20New Moon17Sun
18Mon12:2212.312:5711.26:20-1.46:340.05:437:21Waxing Crescent18Mon
19Tue1:0812.01:4610.77:08-1.07:210.55:417:22Waxing Crescent19Tue
20Wed1:5511.52:3510.17:57-0.58:101.05:407:23Waxing Crescent20Wed
21Thu2:4410.93:279.58:480.19:021.65:387:25Waxing Crescent21Thu
22Fri3:3610.24:229.19:410.79:582.05:377:26First Quarter22Fri
23Sat4:339.75:208.810:381.210:572.25:357:27First Quarter23Sat
24Sun5:349.36:198.711:371.411:582.25:337:28First Quarter24Sun
25Mon6:359.27:168.812:341.55:327:29First Quarter25Mon
26Tue7:339.28:079.112:572.11:261.55:307:31Waxing Gibbous26Tue
27Wed8:259.38:529.51:501.72:131.35:297:32Waxing Gibbous27Wed
28Thu9:139.59:339.92:381.32:561.25:277:33Waxing Gibbous28Thu
29Fri9:569.710:1010.33:220.93:351.15:267:34Waxing Gibbous29Fri
30Sat10:369.810:4510.64:020.54:111.05:247:36Full Moon30Sat
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 2:11 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 neap phase. Tonight's moon is 41% 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 Third Quarter (41% 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