Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Sunday, June 21, 2026
The tide is currently rising in South Harpswell, ME.
Next low tide : 11:05 am (0.0 ft)
Next high tide : in 2h 22m at 4:48 am (9.6 ft)
Sunset today : 8:25 pm
Sunrise tomorrow : 4:58 am
Moon phase : First Quarter (48% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

South Harpswell, ME Tides - Nov 2031

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat12:549.51:0110.36:470.47:22-0.57:155:31Waning Gibbous1Sat
2Sun1:389.212:439.96:290.77:05-0.16:174:29Waning Gibbous2Sun
3Mon1:218.81:259.67:121.07:480.26:184:28Waning Gibbous3Mon
4Tue2:068.52:109.27:561.38:350.66:194:27Waning Gibbous4Tue
5Wed2:558.23:008.88:451.69:230.96:214:26Third Quarter5Wed
6Thu3:468.13:538.59:371.810:141.26:224:24Third Quarter6Thu
7Fri4:378.04:488.310:321.911:051.36:234:23Third Quarter7Fri
8Sat5:298.15:438.311:281.811:561.36:254:22Third Quarter8Sat
9Sun6:208.36:398.312:251.66:264:21Waning Crescent9Sun
10Mon7:098.77:328.512:471.21:181.26:274:20Waning Crescent10Mon
11Tue7:549.18:208.71:341.02:070.76:294:19Waning Crescent11Tue
12Wed8:369.69:059.02:180.82:510.26:304:17Waning Crescent12Wed
13Thu9:1610.09:499.23:000.53:35-0.36:314:16New Moon13Thu
14Fri9:5810.410:349.43:430.24:18-0.76:334:15New Moon14Fri
15Sat10:4110.811:199.64:270.05:04-1.16:344:14New Moon15Sat
16Sun11:2710.95:13-0.15:51-1.26:354:14Waxing Crescent16Sun
17Mon12:079.612:1511.06:01-0.26:39-1.26:364:13Waxing Crescent17Mon
18Tue12:579.61:0610.86:52-0.17:31-1.16:384:12Waxing Crescent18Tue
19Wed1:509.52:0210.57:460.18:27-0.86:394:11Waxing Crescent19Wed
20Thu2:489.43:0310.18:460.39:26-0.56:404:10First Quarter20Thu
21Fri3:509.44:099.79:510.410:27-0.26:414:09First Quarter21Fri
22Sat4:539.45:159.410:580.511:300.06:434:09First Quarter22Sat
23Sun5:569.66:239.212:070.46:444:08Waxing Gibbous23Sun
24Mon6:569.87:279.212:320.21:130.16:454:07Waxing Gibbous24Mon
25Tue7:5310.08:269.21:320.32:13-0.26:464:07Waxing Gibbous25Tue
26Wed8:4510.29:199.22:270.33:06-0.56:484:06Waxing Gibbous26Wed
27Thu9:3210.310:089.23:160.33:55-0.66:494:06Full Moon27Thu
28Fri10:1710.310:549.14:020.44:40-0.66:504:05Full Moon28Fri
29Sat10:5910.211:369.04:450.55:22-0.56:514:05Full Moon29Sat
30Sun11:3910.05:260.76:02-0.36:524:04Full Moon30Sun
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 7:56 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 neap phase. Tonight's moon is 48% 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 minimum.

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 (48% illuminated). This places South Harpswell, ME in a neap tide cycle, so tidal ranges are near their weekly minimum 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