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 2h 54m 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 - Sep 1985

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun12:559.81:219.27:080.07:220.56:037:16Waning Gibbous1Sun
2Mon1:359.51:579.27:430.38:010.66:047:14Waning Gibbous2Mon
3Tue2:139.12:339.18:180.78:410.86:067:12Waning Gibbous3Tue
4Wed2:538.73:108.98:541.09:231.06:077:10Waning Gibbous4Wed
5Thu3:368.33:508.89:341.410:091.26:087:09Third Quarter5Thu
6Fri4:247.94:368.610:171.810:581.46:097:07Third Quarter6Fri
7Sat5:157.65:268.411:052.011:521.66:107:05Third Quarter7Sat
8Sun6:117.46:218.411:582.26:117:03Third Quarter8Sun
9Mon7:117.37:208.512:521.612:562.26:127:01Waning Crescent9Mon
10Tue8:117.58:198.91:531.41:562.06:137:00Waning Crescent10Tue
11Wed9:057.99:139.42:501.02:531.56:146:58Waning Crescent11Wed
12Thu9:538.410:029.93:390.53:441.06:166:56Waning Crescent12Thu
13Fri10:389.010:5010.34:240.04:320.36:176:54New Moon13Fri
14Sat11:219.611:3710.65:07-0.55:20-0.36:186:52New Moon14Sat
15Sun12:0510.25:50-0.96:08-0.76:196:50New Moon15Sun
16Mon12:2410.812:4910.66:34-1.06:57-1.16:206:49Waxing Crescent16Mon
17Tue1:1310.71:3410.97:19-1.07:47-1.26:216:47Waxing Crescent17Tue
18Wed2:0210.42:2210.98:06-0.78:39-1.16:226:45Waxing Crescent18Wed
19Thu2:5610.03:1310.78:57-0.39:36-0.76:246:43Waxing Crescent19Thu
20Fri3:549.44:1110.39:520.210:38-0.36:256:41First Quarter20Fri
21Sat4:588.95:149.910:530.811:440.16:266:39First Quarter21Sat
22Sun6:068.56:229.611:581.16:276:37First Quarter22Sun
23Mon7:158.47:329.512:540.31:091.36:286:36Waxing Gibbous23Mon
24Tue8:228.48:389.52:040.42:181.26:296:34Waxing Gibbous24Tue
25Wed9:218.69:369.63:060.33:191.06:306:32Waxing Gibbous25Wed
26Thu10:128.910:269.73:590.24:120.76:316:30Waxing Gibbous26Thu
27Fri10:579.211:129.74:450.14:580.56:336:28Full Moon27Fri
28Sat11:379.311:539.65:250.15:410.36:346:26Full Moon28Sat
29Sun12:149.46:020.36:200.36:356:25Full Moon29Sun
30Mon12:329.412:489.46:360.56:570.36:366:23Full Moon30Mon
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