Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Sunday, July 12, 2026
The tide is currently falling in South Harpswell, ME.
Next low tide : in 5h 02m at 3:30 pm (0.4 ft)
Next high tide : 9:51 pm (10.9 ft)
Sunset today : 8:21 pm
Sunrise tomorrow : 5:09 am
Moon phase : Waning Crescent (5% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

South Harpswell, ME Tides - May 1992

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri11:008.811:079.94:460.24:510.75:317:42New Moon1Fri
2Sat11:419.011:4510.25:26-0.25:310.65:297:44New Moon2Sat
3Sun12:239.16:07-0.56:120.55:287:45New Moon3Sun
4Mon12:2610.41:059.16:49-0.76:550.45:277:46Waxing Crescent4Mon
5Tue1:0910.51:509.17:34-0.87:420.45:257:47Waxing Crescent5Tue
6Wed1:5510.52:399.18:22-0.78:320.55:247:48Waxing Crescent6Wed
7Thu2:4610.43:339.09:14-0.69:270.65:237:49Waxing Crescent7Thu
8Fri3:4210.14:329.010:10-0.410:280.75:227:50First Quarter8Fri
9Sat4:449.85:339.111:09-0.211:320.75:207:52First Quarter9Sat
10Sun5:499.66:359.312:09-0.15:197:53First Quarter10Sun
11Mon6:569.47:369.612:400.61:110.15:187:54Waxing Gibbous11Mon
12Tue8:039.38:3510.01:480.32:120.15:177:55Waxing Gibbous12Tue
13Wed9:069.49:2810.32:52-0.13:090.15:167:56Waxing Gibbous13Wed
14Thu10:039.410:1810.53:49-0.44:010.15:157:57Waxing Gibbous14Thu
15Fri10:559.411:0610.64:41-0.74:500.25:137:58Full Moon15Fri
16Sat11:459.411:5110.55:30-0.85:370.45:127:59Full Moon16Sat
17Sun12:329.26:17-0.86:220.65:118:00Full Moon17Sun
18Mon12:3610.41:179.07:01-0.67:050.85:108:02Waning Gibbous18Mon
19Tue1:1810.12:018.87:44-0.37:481.05:098:03Waning Gibbous19Tue
20Wed2:019.82:448.68:270.08:321.35:098:04Waning Gibbous20Wed
21Thu2:449.53:308.49:100.49:181.65:088:05Waning Gibbous21Thu
22Fri3:319.14:178.39:550.710:081.85:078:06Third Quarter22Fri
23Sat4:208.75:058.210:410.910:591.95:068:07Third Quarter23Sat
24Sun5:118.45:548.311:271.111:531.95:058:08Third Quarter24Sun
25Mon6:048.26:428.412:151.35:048:09Third Quarter25Mon
26Tue6:588.17:308.612:481.81:031.45:048:09Third Quarter26Tue
27Wed7:548.08:189.01:431.51:531.45:038:10Waning Crescent27Wed
28Thu8:478.19:039.32:361.12:411.35:028:11Waning Crescent28Thu
29Fri9:378.39:469.73:250.63:271.15:028:12Waning Crescent29Fri
30Sat10:248.610:3010.24:100.24:130.95:018:13New Moon30Sat
31Sun11:118.811:1510.54:56-0.34:580.65:018:14New Moon31Sun
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 6:40 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 5% 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 Waning Crescent (5% 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