Tides Today & Tomorrow in Southwest Harbor, ME

TIDE TIMES for Thursday, July 2, 2026
The tide is currently falling in Southwest Harbor, ME.
Next low tide : in 2h 32m at 6:44 am (0.4 ft)
Next high tide : 1:19 pm (9.6 ft)
Sunset today : 8:20 pm
Sunrise tomorrow : 4:53 am
Moon phase : Waning Gibbous (94% illuminated)
Tide Station Location : Station #8413564
Common Questions About Tides

Southwest Harbor, ME Tides - Sep 1997

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon11:1810.311:3110.94:440.14:570.65:567:09New Moon1Mon
2Tue11:5410.45:210.25:350.65:577:08New Moon2Tue
3Wed12:0710.812:2910.45:560.36:110.65:587:06New Moon3Wed
4Thu12:4310.61:0210.56:300.46:460.75:597:04Waxing Crescent4Thu
5Fri1:1810.41:3610.47:030.67:220.86:017:02Waxing Crescent5Fri
6Sat1:5410.22:1210.47:370.88:000.96:027:00Waxing Crescent6Sat
7Sun2:339.92:5010.38:141.08:410.96:036:59Waxing Crescent7Sun
8Mon3:149.73:3310.28:551.29:261.06:046:57First Quarter8Mon
9Tue4:019.44:2110.29:411.410:181.06:056:55First Quarter9Tue
10Wed4:559.35:1610.210:341.511:150.96:066:53First Quarter10Wed
11Thu5:549.36:1610.411:321.46:076:51First Quarter11Thu
12Fri6:569.57:1810.812:170.612:351.16:096:49Waxing Gibbous12Fri
13Sat7:5710.08:1911.31:180.21:370.66:106:47Waxing Gibbous13Sat
14Sun8:5510.79:1611.82:17-0.32:360.06:116:46Waxing Gibbous14Sun
15Mon9:4911.410:1112.33:12-0.93:33-0.76:126:44Full Moon15Mon
16Tue10:4112.011:0512.74:04-1.44:27-1.26:136:42Full Moon16Tue
17Wed11:3212.511:5712.74:55-1.65:20-1.66:146:40Full Moon17Wed
18Thu12:2212.75:46-1.66:13-1.76:166:38Waning Gibbous18Thu
19Fri12:5012.61:1312.76:37-1.47:06-1.56:176:36Waning Gibbous19Fri
20Sat1:4312.12:0612.47:29-1.08:01-1.26:186:34Waning Gibbous20Sat
21Sun2:3811.53:0011.98:23-0.48:59-0.76:196:32Waning Gibbous21Sun
22Mon3:3610.93:5811.49:200.29:59-0.26:206:31Third Quarter22Mon
23Tue4:3810.34:5910.810:200.711:010.36:216:29Third Quarter23Tue
24Wed5:419.86:0310.511:231.16:236:27Third Quarter24Wed
25Thu6:459.67:0610.312:040.512:261.36:246:25Waning Crescent25Thu
26Fri7:459.68:0410.21:050.61:261.26:256:23Waning Crescent26Fri
27Sat8:399.78:5710.32:000.62:201.16:266:21Waning Crescent27Sat
28Sun9:2710.09:4410.52:500.53:080.86:276:19Waning Crescent28Sun
29Mon10:0910.210:2610.63:340.43:520.66:286:18New Moon29Mon
30Tue10:4710.411:0410.64:130.44:310.46:306:16New Moon30Tue
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 10:01 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 spring phase. Tonight's moon is 94% 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 (94% 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