Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Friday, July 31, 2026
The tide is currently falling in South Harpswell, ME.
Next low tide : in 5h 32m at 7:03 am (0.1 ft)
Next high tide : 1:19 pm (8.7 ft)
Sunset today : 8:04 pm
Sunrise tomorrow : 5:28 am
Moon phase : Waning Gibbous (96% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

South Harpswell, ME Tides - Oct 2080

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue12:579.31:079.86:550.57:22-0.16:386:19Waning Gibbous1Tue
2Wed1:359.11:439.97:320.68:04-0.16:406:17Waning Gibbous2Wed
3Thu2:168.92:249.98:130.88:490.06:416:16Waning Gibbous3Thu
4Fri3:038.63:129.78:591.09:420.26:426:14Third Quarter4Fri
5Sat3:578.34:089.69:521.210:410.46:436:12Third Quarter5Sat
6Sun4:598.15:129.510:531.411:450.56:446:10Third Quarter6Sun
7Mon6:068.16:219.411:591.46:466:09Third Quarter7Mon
8Tue7:158.37:339.612:530.51:101.26:476:07Waning Crescent8Tue
9Wed8:218.88:399.92:010.22:190.76:486:05Waning Crescent9Wed
10Thu9:199.49:3910.13:01-0.13:220.16:496:03Waning Crescent10Thu
11Fri10:1010.010:3410.33:54-0.44:18-0.46:506:02New Moon11Fri
12Sat10:5810.411:2510.34:43-0.65:09-0.86:526:00New Moon12Sat
13Sun11:4410.75:29-0.55:59-1.06:535:58New Moon13Sun
14Mon12:1510.112:2810.76:14-0.36:46-1.06:545:57New Moon14Mon
15Tue1:039.81:1210.56:590.17:33-0.86:555:55Waxing Crescent15Tue
16Wed1:499.41:5510.17:420.58:20-0.36:565:53Waxing Crescent16Wed
17Thu2:378.92:419.78:281.09:080.26:585:52Waxing Crescent17Thu
18Fri3:278.43:319.29:161.510:010.76:595:50Waxing Crescent18Fri
19Sat4:228.04:268.810:091.910:581.17:005:48First Quarter19Sat
20Sun5:197.75:258.511:072.211:571.47:015:47First Quarter20Sun
21Mon6:177.66:258.312:082.27:035:45First Quarter21Mon
22Tue7:147.77:248.312:551.41:092.27:045:44First Quarter22Tue
23Wed8:088.08:198.51:501.42:071.97:055:42Waxing Gibbous23Wed
24Thu8:548.39:088.72:391.22:571.57:075:41Waxing Gibbous24Thu
25Fri9:358.89:528.93:201.03:411.07:085:39Waxing Gibbous25Fri
26Sat10:129.210:339.03:570.84:210.67:095:38Waxing Gibbous26Sat
27Sun10:479.611:129.14:320.64:590.17:105:36Full Moon27Sun
28Mon11:219.911:529.25:080.55:37-0.27:125:35Full Moon28Mon
29Tue11:5710.15:440.56:17-0.57:135:33Full Moon29Tue
30Wed12:329.112:3610.36:240.56:59-0.67:145:32Waning Gibbous30Wed
31Thu1:149.11:1810.37:060.67:44-0.57:165:31Waning Gibbous31Thu
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8417647)

Common Questions About South Harpswell, ME Tides

Show All
What time does the tide turn (slack tide) in South Harpswell, ME today?

Slack tide in South Harpswell, ME is approximately 10:11 am — 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 South Harpswell, ME?

South Harpswell, ME is currently in a spring phase. Tonight's moon is 96% 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 South Harpswell, 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 South Harpswell, ME?

Tide predictions for South Harpswell, 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 South Harpswell, ME?

Tide data for South Harpswell, ME is sourced from NOAA Station #8417647. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8417647.

What is the moon phase in South Harpswell, ME tonight?

Tonight the moon over South Harpswell, ME is Waning Gibbous (96% illuminated). This places South Harpswell, 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