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 : 12:13 pm (1.3 ft)
Next high tide : in 35m at 6:15 am (8.2 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 - Nov 2069

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri12:5210.51:0611.66:50-0.97:28-1.87:165:30Waning Gibbous1Fri
2Sat1:4610.32:0011.37:43-0.68:23-1.57:185:28Waning Gibbous2Sat
3Sun1:4210.01:5610.87:39-0.28:21-1.06:194:27Waning Gibbous3Sun
4Mon2:429.62:5810.38:390.29:22-0.56:204:26Third Quarter4Mon
5Tue3:459.34:039.79:440.610:250.06:224:25Third Quarter5Tue
6Wed4:489.15:089.310:500.911:280.36:234:23Third Quarter6Wed
7Thu5:509.06:139.011:570.96:244:22Third Quarter7Thu
8Fri6:499.17:148.912:290.61:010.96:264:21Waning Crescent8Fri
9Sat7:439.28:098.81:260.71:590.66:274:20Waning Crescent9Sat
10Sun8:319.48:588.92:160.72:480.46:284:19Waning Crescent10Sun
11Mon9:139.59:428.93:000.83:320.26:304:18Waning Crescent11Mon
12Tue9:529.610:238.83:400.84:120.16:314:17New Moon12Tue
13Wed10:299.711:028.84:170.94:490.16:324:16New Moon13Wed
14Thu11:059.711:398.74:520.95:240.16:334:15New Moon14Thu
15Fri11:409.65:271.05:590.16:354:14New Moon15Fri
16Sat12:168.612:159.56:021.16:340.26:364:13Waxing Crescent16Sat
17Sun12:528.512:509.46:391.27:110.36:374:12Waxing Crescent17Sun
18Mon1:298.41:299.37:181.37:510.46:394:11Waxing Crescent18Mon
19Tue2:108.32:129.18:011.48:350.56:404:10Waxing Crescent19Tue
20Wed2:558.33:019.08:501.49:230.56:414:09First Quarter20Wed
21Thu3:448.53:558.99:431.310:140.56:424:09First Quarter21Thu
22Fri4:368.74:528.910:401.111:070.46:444:08First Quarter22Fri
23Sat5:309.15:539.011:400.76:454:07Waxing Gibbous23Sat
24Sun6:269.66:569.212:040.312:420.26:464:07Waxing Gibbous24Sun
25Mon7:2310.27:569.51:020.01:42-0.46:474:06Waxing Gibbous25Mon
26Tue8:1710.88:539.81:58-0.32:39-1.16:484:06Waxing Gibbous26Tue
27Wed9:1011.39:4910.12:52-0.63:33-1.66:504:05Full Moon27Wed
28Thu10:0311.610:4310.33:46-0.84:27-1.96:514:05Full Moon28Thu
29Fri10:5611.711:3710.34:39-0.95:20-2.06:524:04Full Moon29Fri
30Sat11:4911.65:32-0.86:13-1.96:534:04Waning Gibbous30Sat
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 9:14 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 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