Tides Today & Tomorrow in Southwest Harbor, ME

TIDE TIMES for Tuesday, July 7, 2026
The tide is currently rising in Southwest Harbor, ME.
Next low tide : 10:33 pm (0.9 ft)
Next high tide : in 5h 19m at 4:43 pm (10.5 ft)
Sunset today : 8:19 pm
Sunrise tomorrow : 4:57 am
Moon phase : Third Quarter (52% illuminated)
Tide Station Location : Station #8413564
Common Questions About Tides

Southwest Harbor, ME Tides - Nov 1989

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed11:5610.55:231.65:550.66:104:23Waxing Crescent1Wed
2Thu12:309.312:3310.35:591.86:330.86:114:21Waxing Crescent2Thu
3Fri1:099.11:1410.26:391.97:160.96:134:20Waxing Crescent3Fri
4Sat1:539.02:0010.07:232.08:031.06:144:19First Quarter4Sat
5Sun2:428.92:519.98:142.18:551.06:154:17First Quarter5Sun
6Mon3:369.03:499.99:111.99:510.96:174:16First Quarter6Mon
7Tue4:339.34:5110.010:131.710:490.76:184:15First Quarter7Tue
8Wed5:329.85:5310.211:161.111:460.46:194:14Waxing Gibbous8Wed
9Thu6:2910.46:5410.612:170.46:214:13Waxing Gibbous9Thu
10Fri7:2311.27:5210.912:410.01:15-0.36:224:11Waxing Gibbous10Fri
11Sat8:1411.98:4711.31:34-0.32:10-1.06:234:10Full Moon11Sat
12Sun9:0512.59:4011.42:26-0.53:03-1.66:254:09Full Moon12Sun
13Mon9:5512.810:3311.53:17-0.63:55-1.86:264:08Full Moon13Mon
14Tue10:4612.911:2511.34:08-0.54:48-1.86:274:07Full Moon14Tue
15Wed11:3712.75:00-0.35:41-1.56:294:06Waning Gibbous15Wed
16Thu12:1911.012:3112.25:540.16:35-1.06:304:05Waning Gibbous16Thu
17Fri1:1410.61:2711.66:500.57:32-0.56:314:04Waning Gibbous17Fri
18Sat2:1110.12:2611.07:491.08:300.16:334:03Third Quarter18Sat
19Sun3:119.83:2710.48:501.39:300.56:344:03Third Quarter19Sun
20Mon4:129.54:319.99:541.510:290.96:354:02Third Quarter20Mon
21Tue5:129.55:339.610:571.511:251.16:374:01Third Quarter21Tue
22Wed6:089.66:329.411:561.46:384:00Waning Crescent22Wed
23Thu7:009.87:269.312:181.212:511.26:393:59Waning Crescent23Thu
24Fri7:4610.08:159.41:071.31:400.96:403:59Waning Crescent24Fri
25Sat8:2810.28:599.41:511.32:240.66:423:58Waning Crescent25Sat
26Sun9:0710.49:409.52:321.33:050.46:433:58New Moon26Sun
27Mon9:4410.510:189.53:111.43:430.36:443:57New Moon27Mon
28Tue10:2010.610:559.53:481.44:200.36:453:57New Moon28Tue
29Wed10:5610.711:329.44:241.54:570.36:463:56New Moon29Wed
30Thu11:3310.75:001.55:340.36:473:56Waxing Crescent30Thu
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 7:38 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 52% 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 (52% 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