Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Thursday, June 25, 2026
The tide is currently rising in South Harpswell, ME.
Next low tide : 2:43 pm (1.5 ft)
Next high tide : in 1h 53m at 8:49 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 2038

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri1:1510.81:3411.27:19-1.17:50-1.56:386:21Waxing Crescent1Fri
2Sat2:0710.52:2511.18:09-0.88:44-1.36:396:19Waxing Crescent2Sat
3Sun3:0310.03:2010.79:02-0.39:43-0.96:406:17Waxing Crescent3Sun
4Mon4:039.54:2010.310:010.210:46-0.46:416:15First Quarter4Mon
5Tue5:089.15:259.911:040.711:530.06:426:14First Quarter5Tue
6Wed6:168.76:339.612:111.06:436:12First Quarter6Wed
7Thu7:238.67:419.41:020.31:211.26:456:10Waxing Gibbous7Thu
8Fri8:268.78:439.42:080.32:271.06:466:08Waxing Gibbous8Fri
9Sat9:228.99:389.53:070.33:250.86:476:07Waxing Gibbous9Sat
10Sun10:109.210:279.63:570.24:140.56:486:05Waxing Gibbous10Sun
11Mon10:539.411:109.54:400.24:590.36:496:03Full Moon11Mon
12Tue11:319.511:519.45:190.35:390.26:516:01Full Moon12Tue
13Wed12:079.55:550.46:160.26:526:00Full Moon13Wed
14Thu12:299.312:419.56:280.66:520.26:535:58Full Moon14Thu
15Fri1:059.11:139.47:010.87:260.36:545:56Waning Gibbous15Fri
16Sat1:418.81:469.37:341.08:020.56:555:55Waning Gibbous16Sat
17Sun2:188.52:219.18:091.38:410.76:575:53Waning Gibbous17Sun
18Mon2:578.23:008.98:481.69:230.96:585:51Waning Gibbous18Mon
19Tue3:418.03:448.89:321.810:111.06:595:50Third Quarter19Tue
20Wed4:317.84:368.710:211.911:031.17:005:48Third Quarter20Wed
21Thu5:257.75:328.711:151.911:591.17:025:47Third Quarter21Thu
22Fri6:227.96:328.812:141.87:035:45Third Quarter22Fri
23Sat7:208.27:339.112:570.91:151.47:045:43Waning Crescent23Sat
24Sun8:168.88:339.61:550.52:160.87:065:42Waning Crescent24Sun
25Mon9:079.59:2810.02:500.03:130.17:075:40Waning Crescent25Mon
26Tue9:5610.210:2110.43:40-0.54:05-0.77:085:39New Moon26Tue
27Wed10:4410.911:1210.74:28-0.94:57-1.37:095:37New Moon27Wed
28Thu11:3211.35:17-1.15:48-1.77:115:36New Moon28Thu
29Fri12:0410.812:2111.66:06-1.16:40-1.97:125:35New Moon29Fri
30Sat12:5710.61:1111.56:56-0.97:32-1.87:135:33Waxing Crescent30Sat
31Sun1:5010.32:0311.37:47-0.68:27-1.57:155:32Waxing Crescent31Sun
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 11:46 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