Nearby Harbors
44.2759’ N, 68.3187’ W

Southwest Harbor, ME

43°
H 48°
L 41°
W
7mph
High tide
4:59 pm
Photo Credits

Tides Today & Tomorrow in Southwest Harbor, ME

TIDE TIMES for Sunday, October 18, 2026
The tide is currently rising in Southwest Harbor, ME.
Next low tide : 11:04 pm (1.6 ft)
Next high tide : in 6h 17m at 4:59 pm (9.3 ft)
Sunset today : 5:44 pm
Sunrise tomorrow : 6:52 am
Moon phase : First Quarter (50% illuminated)
Tide Station Location : Station #8413564
Common Questions About Tides

Featured Local Businesses

Charles M Young Painting of Maine Coast

Clark Point Gallery
A red hull lobster yacht cruising in calm water

John Williams Boat Company
Hamilton Marine - Southwest Harbor

Hamilton Marine - Southwest Harbor
Bowden Marine

Bowden Marine
Billings Diesel & Marine - Diesel Service

Billings Diesel & Marine

Southwest Harbor, ME Tides - Dec 1838

Print this Tide Chart
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat9:5512.510:3411.03:18-0.23:57-1.56:524:00Full Moon1Sat
2Sun10:4512.411:2510.84:08-0.14:47-1.46:543:59Full Moon2Sun
3Mon11:3412.14:580.25:37-1.16:553:59Waning Gibbous3Mon
4Tue12:1510.512:2311.75:480.56:27-0.66:563:59Waning Gibbous4Tue
5Wed1:0510.11:1411.16:390.97:18-0.16:573:58Waning Gibbous5Wed
6Thu1:569.82:0610.67:311.38:090.46:583:58Waning Gibbous6Thu
7Fri2:489.43:0010.08:261.69:010.86:593:58Third Quarter7Fri
8Sat3:429.23:569.59:221.89:531.27:003:58Third Quarter8Sat
9Sun4:369.14:539.210:201.910:451.47:013:58Third Quarter9Sun
10Mon5:299.25:508.911:171.811:361.67:023:58Third Quarter10Mon
11Tue6:199.46:458.912:121.67:033:58Waning Crescent11Tue
12Wed7:069.67:368.912:251.61:021.37:033:58Waning Crescent12Wed
13Thu7:519.98:249.01:121.61:490.97:043:58Waning Crescent13Thu
14Fri8:3210.29:079.21:551.62:320.67:053:58Waning Crescent14Fri
15Sat9:1210.59:499.32:371.53:130.37:063:59New Moon15Sat
16Sun9:5110.710:299.53:171.43:530.17:063:59New Moon16Sun
17Mon10:3110.911:089.63:561.34:33-0.17:073:59New Moon17Mon
18Tue11:1211.111:509.74:361.25:14-0.27:083:59New Moon18Tue
19Wed11:5511.25:191.15:57-0.37:084:00Waxing Crescent19Wed
20Thu12:339.812:4011.26:041.06:43-0.37:094:00Waxing Crescent20Thu
21Fri1:209.91:3011.16:541.07:31-0.27:104:01Waxing Crescent21Fri
22Sat2:1010.02:2410.87:480.98:22-0.17:104:01First Quarter22Sat
23Sun3:0410.23:2210.58:470.89:170.17:114:02First Quarter23Sun
24Mon4:0110.44:2510.29:500.710:150.37:114:02First Quarter24Mon
25Tue5:0010.65:3010.010:550.411:150.47:114:03First Quarter25Tue
26Wed6:0010.96:369.912:000.17:124:04Waxing Gibbous26Wed
27Thu6:5911.27:3910.012:160.41:02-0.37:124:04Waxing Gibbous27Thu
28Fri7:5611.58:3810.11:150.42:00-0.77:124:05Waxing Gibbous28Fri
29Sat8:5111.89:3210.32:110.42:55-1.07:124:06Full Moon29Sat
30Sun9:4211.910:2310.43:050.33:46-1.17:134:07Full Moon30Sun
31Mon10:3211.911:1010.23:550.34:35-1.07:134:07Full Moon31Mon
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 neap phase. Tonight's moon is 50% 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 (50% 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

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