Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Monday, July 13, 2026
The tide is currently falling in South Harpswell, ME.
Next low tide : in 4h 13m at 4:29 pm (0.2 ft)
Next high tide : 10:50 pm (11.1 ft)
Sunset today : 8:21 pm
Sunrise tomorrow : 5:10 am
Moon phase : New Moon (1% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

South Harpswell, ME Tides - Feb 1991

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri12:0910.012:2510.76:09-0.86:40-1.36:564:50Waning Gibbous1Fri
2Sat12:5610.11:1410.26:59-0.77:25-0.96:554:51Waning Gibbous2Sat
3Sun1:419.92:039.67:49-0.48:10-0.36:544:53Waning Gibbous3Sun
4Mon2:289.62:548.98:400.08:580.36:534:54Third Quarter4Mon
5Tue3:179.33:498.39:350.49:470.96:524:55Third Quarter5Tue
6Wed4:088.94:467.810:310.810:401.46:514:57Third Quarter6Wed
7Thu5:038.65:467.411:321.111:381.86:494:58Third Quarter7Thu
8Fri6:018.46:497.312:361.26:484:59Waning Crescent8Fri
9Sat7:028.47:497.412:401.91:381.16:475:01Waning Crescent9Sat
10Sun7:588.68:407.61:401.82:300.96:465:02Waning Crescent10Sun
11Mon8:478.89:257.92:311.63:150.66:445:03Waning Crescent11Mon
12Tue9:319.110:068.23:151.23:540.36:435:05Waning Crescent12Tue
13Wed10:119.410:438.63:550.94:300.06:415:06New Moon13Wed
14Thu10:499.611:178.94:330.65:03-0.26:405:08New Moon14Thu
15Fri11:259.711:519.25:100.35:36-0.36:395:09New Moon15Fri
16Sat12:019.75:480.06:10-0.46:375:10Waxing Crescent16Sat
17Sun12:249.412:399.66:27-0.26:45-0.46:365:12Waxing Crescent17Sun
18Mon12:599.71:199.47:08-0.37:24-0.26:345:13Waxing Crescent18Mon
19Tue1:389.82:039.17:53-0.38:080.06:335:14Waxing Crescent19Tue
20Wed2:229.82:548.78:43-0.28:570.36:315:16First Quarter20Wed
21Thu3:139.73:528.49:390.09:520.66:295:17First Quarter21Thu
22Fri4:129.54:588.110:410.210:540.96:285:18First Quarter22Fri
23Sat5:179.46:108.011:500.26:265:20Waxing Gibbous23Sat
24Sun6:299.57:228.212:030.91:030.16:255:21Waxing Gibbous24Sun
25Mon7:409.88:278.71:160.72:10-0.36:235:22Waxing Gibbous25Mon
26Tue8:4310.19:239.22:220.33:08-0.76:215:24Waxing Gibbous26Tue
27Wed9:4010.410:149.73:21-0.23:59-1.06:205:25Full Moon27Wed
28Thu10:3210.611:0210.04:14-0.64:47-1.16:185:26Full Moon28Thu
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 7:39 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 South Harpswell, ME?

South Harpswell, ME is currently in a spring phase. Tonight's moon is 1% 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 New Moon (1% 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