Tides Today & Tomorrow in Southwest Harbor, ME

TIDE TIMES for Saturday, July 4, 2026
The tide is currently falling in Southwest Harbor, ME.
Next low tide : in 1h 21m at 8:08 pm (1.5 ft)
Next high tide (tomorrow) : 2:40 am (10.4 ft)
Sunset today : 8:20 pm
Sunrise tomorrow : 4:55 am
Moon phase : Waning Gibbous (81% illuminated)
Tide Station Location : Station #8413564
Common Questions About Tides

Southwest Harbor, ME Tides - Jul 1994

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri5:349.56:0210.011:191.211:581.44:538:21Third Quarter1Fri
2Sat6:309.26:5410.012:111.54:538:20Third Quarter2Sat
3Sun7:269.07:4510.012:521.31:031.74:548:20Waning Crescent3Sun
4Mon8:209.08:3410.21:451.21:531.74:548:20Waning Crescent4Mon
5Tue9:099.19:2010.42:351.02:411.74:558:20Waning Crescent5Tue
6Wed9:559.310:0310.63:210.73:261.54:568:19Waning Crescent6Wed
7Thu10:389.510:4410.94:040.54:081.44:568:19New Moon7Thu
8Fri11:189.811:2311.14:440.24:491.24:578:18New Moon8Fri
9Sat11:5710.05:230.05:291.04:588:18New Moon9Sat
10Sun12:0311.312:3610.36:01-0.26:090.84:598:18New Moon10Sun
11Mon12:4311.41:1610.66:40-0.36:520.65:008:17Waxing Crescent11Mon
12Tue1:2511.41:5710.87:20-0.47:370.55:008:16Waxing Crescent12Tue
13Wed2:1011.32:4211.08:03-0.38:250.45:018:16Waxing Crescent13Wed
14Thu2:5911.13:3011.28:49-0.29:180.35:028:15First Quarter14Thu
15Fri3:5110.84:2211.39:40-0.110:150.25:038:15First Quarter15Fri
16Sat4:4910.55:1911.310:340.211:170.25:048:14First Quarter16Sat
17Sun5:5210.26:1911.411:340.45:058:13First Quarter17Sun
18Mon6:5710.17:2211.512:210.012:370.55:068:12Waxing Gibbous18Mon
19Tue8:0310.18:2411.71:26-0.21:410.55:078:11Waxing Gibbous19Tue
20Wed9:0610.39:2412.02:28-0.52:430.35:088:11Waxing Gibbous20Wed
21Thu10:0410.610:2012.13:27-0.83:410.15:098:10Full Moon21Thu
22Fri10:5810.911:1312.24:21-1.04:350.05:108:09Full Moon22Fri
23Sat11:4811.05:12-1.05:27-0.15:118:08Full Moon23Sat
24Sun12:0312.112:3611.16:00-0.96:170.05:128:07Waning Gibbous24Sun
25Mon12:5111.81:2311.06:46-0.77:050.25:138:06Waning Gibbous25Mon
26Tue1:3811.42:0810.97:31-0.37:520.55:148:05Waning Gibbous26Tue
27Wed2:2410.92:5210.68:150.18:400.75:158:04Waning Gibbous27Wed
28Thu3:1110.43:3810.48:590.69:281.05:168:03Third Quarter28Thu
29Fri3:599.84:2410.19:441.110:181.35:178:02Third Quarter29Fri
30Sat4:509.35:149.910:321.511:111.55:188:00Third Quarter30Sat
31Sun5:448.96:069.811:231.85:197:59Third Quarter31Sun
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 11:24 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 spring phase. Tonight's moon is 81% 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 (81% 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