Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Wednesday, July 22, 2026
The tide is currently falling in South Harpswell, ME.
Next low tide : in 1h 40m at 12:13 pm (1.3 ft)
Next high tide : 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 - Mar 2070

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat1:359.52:008.97:460.08:010.56:155:28Waning Gibbous1Sat
2Sun2:169.22:448.58:300.48:430.96:135:30Waning Gibbous2Sun
3Mon3:008.83:338.09:170.89:291.36:125:31Third Quarter3Mon
4Tue3:488.64:267.710:081.110:191.66:105:32Third Quarter4Tue
5Wed4:408.35:237.511:031.311:141.86:085:34Third Quarter5Wed
6Thu5:378.26:237.512:021.36:065:35Third Quarter6Thu
7Fri6:378.37:217.712:131.81:021.26:055:36Waning Crescent7Fri
8Sat7:348.68:128.01:131.61:560.96:035:37Waning Crescent8Sat
9Sun9:249.09:588.53:061.23:420.47:016:39Waning Crescent9Sun
10Mon10:109.410:399.13:530.64:240.06:596:40Waning Crescent10Mon
11Tue10:549.811:209.64:380.15:04-0.56:586:41New Moon11Tue
12Wed11:3710.25:21-0.55:45-0.86:566:42New Moon12Wed
13Thu12:0010.112:2110.46:05-0.96:27-1.06:546:44New Moon13Thu
14Fri12:4110.51:0610.46:51-1.37:10-1.16:526:45Waxing Crescent14Fri
15Sat1:2510.71:5210.37:37-1.47:56-1.06:506:46Waxing Crescent15Sat
16Sun2:1010.82:4210.08:27-1.38:45-0.76:496:47Waxing Crescent16Sun
17Mon3:0010.63:379.69:20-1.19:38-0.36:476:49Waxing Crescent17Mon
18Tue3:5610.34:389.210:19-0.710:370.26:456:50First Quarter18Tue
19Wed4:589.95:448.811:23-0.311:420.56:436:51First Quarter19Wed
20Thu6:059.66:548.712:310.06:416:52First Quarter20Thu
21Fri7:169.58:038.712:520.71:420.06:406:53Waxing Gibbous21Fri
22Sat8:249.59:059.02:040.62:47-0.16:386:55Waxing Gibbous22Sat
23Sun9:269.610:009.33:090.43:44-0.26:366:56Waxing Gibbous23Sun
24Mon10:209.810:489.64:050.04:34-0.46:346:57Waxing Gibbous24Mon
25Tue11:099.811:329.84:55-0.35:18-0.46:326:58Full Moon25Tue
26Wed11:549.85:40-0.45:59-0.36:316:59Full Moon26Wed
27Thu12:129.912:369.76:22-0.56:37-0.16:297:01Full Moon27Thu
28Fri12:509.91:159.47:01-0.47:140.26:277:02Full Moon28Fri
29Sat1:269.71:539.17:39-0.27:490.56:257:03Waning Gibbous29Sat
30Sun2:019.52:328.88:160.08:260.86:237:04Waning Gibbous30Sun
31Mon2:389.33:138.58:560.39:061.16:227:05Waning Gibbous31Mon
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 3:24 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