Tides Today & Tomorrow in Southwest Harbor, ME

TIDE TIMES for Sunday, August 2, 2026
The tide is currently rising in Southwest Harbor, ME.
Next low tide : 7:41 pm (0.8 ft)
Next high tide : in 2h 14m at 2:00 pm (10.5 ft)
Sunset today : 7:56 pm
Sunrise tomorrow : 5:22 am
Moon phase : Waning Gibbous (84% illuminated)
Tide Station Location : Station #8413564
Common Questions About Tides

Southwest Harbor, ME Tides - Jan 2092

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue2:5110.33:0810.58:330.79:020.07:084:04Third Quarter1Tue
2Wed3:4510.44:0810.39:320.69:590.17:084:05Third Quarter2Wed
3Thu4:4310.65:1210.110:360.410:590.27:084:06Third Quarter3Thu
4Fri5:4410.96:1810.211:410.07:084:07Waning Crescent4Fri
5Sat6:4511.37:2210.312:010.112:45-0.47:084:08Waning Crescent5Sat
6Sun7:4511.78:2310.61:030.01:46-0.97:084:09Waning Crescent6Sun
7Mon8:4212.19:2010.92:02-0.22:43-1.37:084:10New Moon7Mon
8Tue9:3612.410:1411.12:58-0.43:37-1.67:074:11New Moon8Tue
9Wed10:2812.511:0511.23:51-0.54:28-1.67:074:12New Moon9Wed
10Thu11:1912.411:5511.14:43-0.55:18-1.57:074:14New Moon10Thu
11Fri12:0812.05:33-0.36:07-1.27:064:15Waxing Crescent11Fri
12Sat12:4410.912:5811.66:240.06:55-0.77:064:16Waxing Crescent12Sat
13Sun1:3210.61:4711.07:140.37:43-0.27:064:17Waxing Crescent13Sun
14Mon2:2110.32:3810.38:050.78:320.37:054:18First Quarter14Mon
15Tue3:1210.03:319.78:591.09:220.87:054:20First Quarter15Tue
16Wed4:039.74:279.29:541.310:141.27:044:21First Quarter16Wed
17Thu4:569.55:258.910:511.411:081.57:034:22First Quarter17Thu
18Fri5:509.56:228.711:481.37:034:23Waxing Gibbous18Fri
19Sat6:439.67:178.812:021.612:421.17:024:25Waxing Gibbous19Sat
20Sun7:339.88:089.012:531.51:330.97:014:26Waxing Gibbous20Sun
21Mon8:2010.18:549.21:421.42:190.57:014:27Waxing Gibbous21Mon
22Tue9:0310.59:359.52:261.23:010.27:004:29Waxing Gibbous22Tue
23Wed9:4310.810:159.83:080.93:41-0.16:594:30Full Moon23Wed
24Thu10:2211.110:5310.13:470.74:19-0.46:584:31Full Moon24Thu
25Fri11:0111.411:3110.44:260.44:57-0.66:574:33Full Moon25Fri
26Sat11:4111.55:060.25:36-0.76:564:34Waning Gibbous26Sat
27Sun12:1110.612:2311.55:480.16:17-0.86:554:35Waning Gibbous27Sun
28Mon12:5310.81:0711.46:320.07:00-0.76:544:37Waning Gibbous28Mon
29Tue1:3810.91:5611.17:21-0.17:47-0.56:534:38Waning Gibbous29Tue
30Wed2:2710.92:5010.78:140.08:39-0.26:524:39Third Quarter30Wed
31Thu3:2010.93:4910.39:130.19:360.16:514:41Third Quarter31Thu
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 4:50 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 84% 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 (84% 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