Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Thursday, June 25, 2026
The tide is currently falling in South Harpswell, ME.
Next low tide (tomorrow) : in 3h 49m at 3:33 am (0.7 ft)
Next high tide (tomorrow) : 9:42 am (8.0 ft)
Sunset today : 8:26 pm
Sunrise tomorrow : 4:59 am
Moon phase : Waxing Gibbous (84% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

South Harpswell, ME Tides - Oct 2013

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue9:138.59:299.02:591.03:141.26:386:21Waning Crescent1Tue
2Wed9:558.910:129.33:410.73:570.76:396:19Waning Crescent2Wed
3Thu10:339.310:539.54:190.44:380.36:406:17New Moon3Thu
4Fri11:109.711:339.74:560.25:17-0.16:416:15New Moon4Fri
5Sat11:4710.15:330.05:58-0.56:426:13New Moon5Sat
6Sun12:139.812:2610.46:13-0.16:40-0.76:436:12New Moon6Sun
7Mon12:559.81:0710.56:54-0.27:25-0.86:456:10Waxing Crescent7Mon
8Tue1:399.71:5110.67:38-0.18:12-0.86:466:08Waxing Crescent8Tue
9Wed2:279.52:4010.58:260.19:04-0.66:476:06Waxing Crescent9Wed
10Thu3:209.33:3510.29:190.310:01-0.36:486:05First Quarter10Thu
11Fri4:209.04:3710.010:180.511:03-0.16:496:03First Quarter11Fri
12Sat5:258.95:449.811:230.76:516:01First Quarter12Sat
13Sun6:319.06:529.712:080.012:310.76:526:00First Quarter13Sun
14Mon7:379.28:009.71:140.11:400.56:535:58Waxing Gibbous14Mon
15Tue8:389.69:039.92:180.02:460.16:545:56Waxing Gibbous15Tue
16Wed9:3310.09:5910.03:16-0.23:43-0.36:565:55Waxing Gibbous16Wed
17Thu10:2310.310:5010.04:07-0.34:35-0.66:575:53Full Moon17Thu
18Fri11:0910.411:389.94:54-0.35:24-0.86:585:51Full Moon18Fri
19Sat11:5310.55:39-0.26:09-0.86:595:50Full Moon19Sat
20Sun12:249.812:3510.36:210.16:53-0.67:015:48Full Moon20Sun
21Mon1:089.51:1610.17:030.47:35-0.37:025:46Waning Gibbous21Mon
22Tue1:509.11:569.87:430.78:170.07:035:45Waning Gibbous22Tue
23Wed2:338.82:399.48:251.19:010.47:045:43Waning Gibbous23Wed
24Thu3:198.43:249.19:101.49:480.87:065:42Waning Gibbous24Thu
25Fri4:088.24:158.79:591.710:381.17:075:40Third Quarter25Fri
26Sat5:008.05:088.510:511.911:291.27:085:39Third Quarter26Sat
27Sun5:538.06:048.411:461.97:095:37Third Quarter27Sun
28Mon6:468.17:008.412:221.312:431.87:115:36Third Quarter28Mon
29Tue7:388.37:558.51:151.31:401.67:125:34Waning Crescent29Tue
30Wed8:268.78:478.72:051.12:321.17:135:33Waning Crescent30Wed
31Thu9:109.29:349.02:510.83:200.67:155:32Waning Crescent31Thu
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8417647)

Common Questions About South Harpswell, ME Tides

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

Slack tide in South Harpswell, ME is approximately 6:37 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 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 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 Waxing Gibbous (84% 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