Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Saturday, June 20, 2026
The tide is currently rising in South Harpswell, ME.
Next low tide : 10:33 pm (0.6 ft)
Next high tide : in 3h 31m at 4:33 pm (9.5 ft)
Sunset today : 8:25 pm
Sunrise tomorrow : 4:58 am
Moon phase : First Quarter (37% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

South Harpswell, ME Tides - Nov 2021

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon8:438.99:019.32:240.62:460.87:165:30Waning Crescent1Mon
2Tue9:299.69:519.83:120.23:370.07:175:29Waning Crescent2Tue
3Wed10:1310.310:4010.13:57-0.24:25-0.77:195:28New Moon3Wed
4Thu10:5710.911:2910.34:42-0.65:14-1.37:205:26New Moon4Thu
5Fri11:4311.35:29-0.76:03-1.77:215:25New Moon5Fri
6Sat12:1910.312:3111.56:17-0.76:54-1.87:235:24Waxing Crescent6Sat
7Sun1:1110.212:2111.46:06-0.56:46-1.66:244:23Waxing Crescent7Sun
8Mon1:049.91:1411.16:59-0.27:41-1.36:254:21Waxing Crescent8Mon
9Tue2:019.52:1210.67:550.28:41-0.86:274:20Waxing Crescent9Tue
10Wed3:049.13:1610.18:570.69:46-0.36:284:19First Quarter10Wed
11Thu4:108.84:249.610:041.010:520.16:294:18First Quarter11Thu
12Fri5:178.75:339.311:141.111:580.36:304:17First Quarter12Fri
13Sat6:218.86:409.112:241.16:324:16Waxing Gibbous13Sat
14Sun7:209.07:419.11:000.41:290.86:334:15Waxing Gibbous14Sun
15Mon8:129.38:369.01:550.52:250.56:344:14Waxing Gibbous15Mon
16Tue8:589.59:249.02:430.53:130.26:364:13Waxing Gibbous16Tue
17Wed9:399.610:088.93:260.63:570.16:374:12Full Moon17Wed
18Thu10:179.710:498.84:040.84:370.06:384:11Full Moon18Thu
19Fri10:539.711:288.74:410.95:140.06:404:11Full Moon19Fri
20Sat11:289.65:161.15:500.16:414:10Full Moon20Sat
21Sun12:058.512:029.45:511.36:260.26:424:09Waning Gibbous21Sun
22Mon12:428.312:389.36:261.57:020.46:434:08Waning Gibbous22Mon
23Tue1:208.11:169.17:041.67:420.66:444:08Waning Gibbous23Tue
24Wed2:017.91:578.97:451.88:250.86:464:07Waning Gibbous24Wed
25Thu2:467.82:448.78:311.99:120.96:474:06Third Quarter25Thu
26Fri3:347.83:358.69:221.910:010.96:484:06Third Quarter26Fri
27Sat4:257.94:308.610:171.810:520.96:494:05Third Quarter27Sat
28Sun5:168.25:288.611:141.511:450.76:504:05Third Quarter28Sun
29Mon6:088.76:278.812:141.16:524:04Waning Crescent29Mon
30Tue7:009.37:269.112:390.51:130.46:534:04Waning Crescent30Tue
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8417647)

Common Questions About South Harpswell, ME Tides

Show All
What time does the tide turn (slack tide) in South Harpswell, ME today?

Slack tide in South Harpswell, ME is approximately 7:33 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 37% 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 (37% 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