Nearby Harbors
44.2759’ N, 68.3187’ W

Southwest Harbor, ME

66°
H -°
L 46°
NNW
5mph
High tide
7:41 pm
Photo Credits

Tides Today & Tomorrow in Southwest Harbor, ME

TIDE TIMES for Monday, September 21, 2026
The tide is currently rising in Southwest Harbor, ME.
Next low tide (tomorrow) : 1:41 am (1.4 ft)
Next high tide : in 4h 31m at 7:41 pm (9.5 ft)
Sunset today : 6:33 pm
Sunrise tomorrow : 6:19 am
Moon phase : Waxing Gibbous (75% illuminated)
Tide Station Location : Station #8413564
Common Questions About Tides

Featured Local Businesses

A red hull lobster yacht cruising in calm water

John Williams Boat Company
Charles M Young Painting of Maine Coast

Clark Point Gallery
Hamilton Marine - Southwest Harbor

Hamilton Marine - Southwest Harbor
Bowden Marine

Bowden Marine
Billings Diesel & Marine - Diesel Service

Billings Diesel & Marine

Southwest Harbor, ME Tides - Mar 1889

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri10:1011.810:4111.03:34-0.44:06-1.16:095:21New Moon1Fri
2Sat10:5811.811:2611.14:23-0.64:51-1.06:075:23New Moon2Sat
3Sun11:4411.65:09-0.65:34-0.86:065:24New Moon3Sun
4Mon12:0811.112:2811.25:54-0.46:16-0.46:045:25Waxing Crescent4Mon
5Tue12:5010.91:1110.76:37-0.16:570.16:025:26Waxing Crescent5Tue
6Wed1:3110.61:5610.17:220.27:390.76:005:28Waxing Crescent6Wed
7Thu2:1410.22:429.58:070.68:231.25:595:29First Quarter7Thu
8Fri2:599.83:329.08:561.09:111.75:575:30First Quarter8Fri
9Sat3:489.54:268.69:491.310:042.05:555:32First Quarter9Sat
10Sun4:439.25:258.410:461.511:022.15:535:33First Quarter10Sun
11Mon5:429.26:258.411:451.55:515:34First Quarter11Mon
12Tue6:409.37:208.612:002.112:411.25:505:35Waxing Gibbous12Tue
13Wed7:339.68:109.012:561.81:330.95:485:37Waxing Gibbous13Wed
14Thu8:2210.18:549.61:451.42:180.45:465:38Waxing Gibbous14Thu
15Fri9:0610.69:3510.12:310.93:000.05:445:39Full Moon15Fri
16Sat9:4811.010:1410.63:130.43:40-0.45:425:40Full Moon16Sat
17Sun10:2911.410:5211.13:54-0.14:19-0.65:415:42Full Moon17Sun
18Mon11:1111.611:3211.54:35-0.54:58-0.85:395:43Full Moon18Mon
19Tue11:5411.65:18-0.85:39-0.85:375:44Waning Gibbous19Tue
20Wed12:1411.712:4011.46:04-1.06:24-0.65:355:45Waning Gibbous20Wed
21Thu1:0011.81:3011.16:53-0.97:11-0.25:335:47Waning Gibbous21Thu
22Fri1:4911.62:2410.67:46-0.78:040.25:315:48Third Quarter22Fri
23Sat2:4311.33:2410.18:44-0.49:040.65:295:49Third Quarter23Sat
24Sun3:4410.94:309.79:49-0.110:111.05:285:50Third Quarter24Sun
25Mon4:5210.65:419.510:590.111:221.05:265:52Third Quarter25Mon
26Tue6:0310.56:509.712:080.15:245:53Waning Crescent26Tue
27Wed7:1210.77:5310.112:320.81:12-0.15:225:54Waning Crescent27Wed
28Thu8:1311.08:4810.51:350.42:09-0.45:205:55Waning Crescent28Thu
29Fri9:0811.29:3710.82:310.03:00-0.55:185:56New Moon29Fri
30Sat9:5711.310:2111.13:21-0.33:46-0.65:175:58New Moon30Sat
31Sun10:4211.311:0211.24:07-0.54:28-0.45:155:59New Moon31Sun
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8413564)

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Common Questions About Southwest Harbor, ME Tides

Collapse All
Is this week a spring tide or neap tide in Southwest Harbor, ME?

Southwest Harbor, ME is currently in a transitional phase. Tonight's moon is 75% 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 shifting between spring and neap.

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 Waxing Gibbous (75% illuminated). This places Southwest Harbor, ME in a transitional tide cycle, so tidal ranges are shifting between spring and neap 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

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