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 3h 41m 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 - Apr 1992

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed9:559.010:139.23:430.63:580.55:206:07New Moon1Wed
2Thu10:339.110:469.54:200.24:320.45:186:08New Moon2Thu
3Fri11:119.211:199.74:56-0.15:060.35:166:09New Moon3Fri
4Sat11:479.211:549.95:33-0.35:410.35:156:10New Moon4Sat
5Sun1:259.17:11-0.47:190.46:137:11Waxing Crescent5Sun
6Mon1:3110.02:059.07:51-0.58:000.56:117:13Waxing Crescent6Mon
7Tue2:1210.02:508.88:36-0.48:460.66:097:14Waxing Crescent7Tue
8Wed2:589.93:428.69:26-0.29:380.86:087:15Waxing Crescent8Wed
9Thu3:529.74:408.510:220.010:360.96:067:16First Quarter9Thu
10Fri4:549.65:448.511:230.111:411.06:047:17First Quarter10Fri
11Sat6:009.46:508.712:270.16:027:19First Quarter11Sat
12Sun7:109.57:569.112:490.81:330.06:017:20Waxing Gibbous12Sun
13Mon8:189.68:569.62:000.52:35-0.25:597:21Waxing Gibbous13Mon
14Tue9:219.89:5010.13:04-0.13:32-0.45:577:22Waxing Gibbous14Tue
15Wed10:1710.010:3910.64:02-0.64:23-0.55:567:23Full Moon15Wed
16Thu11:1010.111:2710.84:54-1.15:11-0.65:547:24Full Moon16Thu
17Fri12:0110.05:44-1.35:58-0.45:527:26Full Moon17Fri
18Sat12:1310.912:499.86:32-1.36:43-0.15:517:27Full Moon18Sat
19Sun12:5710.71:359.57:19-1.17:280.25:497:28Waning Gibbous19Sun
20Mon1:4110.42:219.18:04-0.78:130.65:477:29Waning Gibbous20Mon
21Tue2:269.93:098.78:51-0.28:591.15:467:30Waning Gibbous21Tue
22Wed3:139.54:008.39:400.39:491.55:447:32Waning Gibbous22Wed
23Thu4:049.04:538.010:320.710:431.85:437:33Third Quarter23Thu
24Fri4:598.65:477.911:251.111:412.05:417:34Third Quarter24Fri
25Sat5:568.36:427.912:191.35:407:35Third Quarter25Sat
26Sun6:548.27:368.112:402.01:141.45:387:36Third Quarter26Sun
27Mon7:528.28:268.41:401.82:061.35:377:38Waning Crescent27Mon
28Tue8:458.39:118.72:351.52:531.25:357:39Waning Crescent28Tue
29Wed9:348.59:529.13:231.13:341.15:347:40Waning Crescent29Wed
30Thu10:188.710:299.54:060.64:130.95:327:41Waning Crescent30Thu
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