Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Wednesday, July 22, 2026
The tide is currently rising in South Harpswell, ME.
Next low tide (tomorrow) : 1:04 am (1.1 ft)
Next high tide : in 59m at 6:36 pm (9.1 ft)
Sunset today : 8:14 pm
Sunrise tomorrow : 5:18 am
Moon phase : First Quarter (62% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

South Harpswell, ME Tides - Feb 1985

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri7:218.58:097.412:571.91:530.96:564:50Waxing Gibbous1Fri
2Sat8:138.98:597.81:521.62:440.56:554:52Waxing Gibbous2Sat
3Sun9:029.49:458.22:431.23:300.06:544:53Waxing Gibbous3Sun
4Mon9:499.910:308.73:310.74:15-0.56:534:55Full Moon4Mon
5Tue10:3610.411:139.14:170.34:59-0.96:514:56Full Moon5Tue
6Wed11:2210.711:579.55:04-0.25:42-1.36:504:57Full Moon6Wed
7Thu12:0810.85:52-0.66:26-1.46:494:59Waning Gibbous7Thu
8Fri12:419.912:5610.76:41-0.87:11-1.36:485:00Waning Gibbous8Fri
9Sat1:2710.11:4610.37:32-0.87:59-1.16:465:01Waning Gibbous9Sat
10Sun2:1610.12:419.88:26-0.78:49-0.66:455:03Third Quarter10Sun
11Mon3:0810.03:409.29:24-0.59:44-0.16:445:04Third Quarter11Mon
12Tue4:059.84:448.610:27-0.210:430.56:425:05Third Quarter12Tue
13Wed5:069.65:538.211:340.111:480.96:415:07Third Quarter13Wed
14Thu6:139.47:058.112:460.26:395:08Waning Crescent14Thu
15Fri7:219.48:118.112:581.11:540.16:385:10Waning Crescent15Fri
16Sat8:239.59:098.32:041.02:54-0.16:365:11Waning Crescent16Sat
17Sun9:199.610:008.53:020.93:46-0.26:355:12Waning Crescent17Sun
18Mon10:099.710:458.73:530.64:33-0.36:335:14New Moon18Mon
19Tue10:549.811:268.84:390.55:14-0.36:325:15New Moon19Tue
20Wed11:349.75:210.45:51-0.36:305:16New Moon20Wed
21Thu12:038.912:129.56:000.36:25-0.16:295:18New Moon21Thu
22Fri12:389.012:499.26:370.46:580.26:275:19Waxing Crescent22Fri
23Sat1:118.91:268.97:140.57:310.56:265:20Waxing Crescent23Sat
24Sun1:458.82:048.57:520.68:060.86:245:22Waxing Crescent24Sun
25Mon2:218.72:468.18:340.88:451.26:225:23Waxing Crescent25Mon
26Tue3:018.53:337.79:191.19:281.66:215:24First Quarter26Tue
27Wed3:458.44:257.310:081.210:161.86:195:25First Quarter27Wed
28Thu4:368.25:227.111:041.411:112.06:175:27First Quarter28Thu
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 9:50 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 South Harpswell, ME?

South Harpswell, ME is currently in a transitional phase. Tonight's moon is 62% 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 shifting between spring and neap.

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 First Quarter (62% illuminated). This places South Harpswell, ME in a transitional tide cycle, so tidal ranges are shifting between spring and neap 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