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 : 10:10 am (-0.5 ft)
Next high tide : in 3h 13m at 3:47 am (10.2 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 - Mar 2030

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri8:389.89:169.02:190.53:01-0.46:165:28Waning Crescent1Fri
2Sat9:3210.010:059.43:150.13:51-0.66:145:29New Moon2Sat
3Sun10:2110.010:499.64:06-0.24:36-0.66:125:31New Moon3Sun
4Mon11:0710.011:309.74:52-0.45:17-0.56:105:32New Moon4Mon
5Tue11:499.85:35-0.45:55-0.36:095:33New Moon5Tue
6Wed12:089.712:289.56:16-0.46:310.06:075:34Waxing Crescent6Wed
7Thu12:449.61:079.16:55-0.27:070.36:055:36Waxing Crescent7Thu
8Fri1:209.41:478.77:340.17:440.76:035:37Waxing Crescent8Fri
9Sat1:589.12:308.38:150.48:241.16:025:38Waxing Crescent9Sat
10Sun3:408.84:167.910:000.810:091.57:006:40First Quarter10Sun
11Mon4:268.65:087.510:501.110:581.86:586:41First Quarter11Mon
12Tue5:198.36:047.311:441.311:531.96:566:42First Quarter12Tue
13Wed6:158.27:047.312:421.46:556:43First Quarter13Wed
14Thu7:168.38:037.612:521.91:431.26:536:44Waxing Gibbous14Thu
15Fri8:158.68:568.01:531.72:380.96:516:46Waxing Gibbous15Fri
16Sat9:089.09:428.62:491.23:260.46:496:47Waxing Gibbous16Sat
17Sun9:569.410:259.23:390.64:100.06:476:48Waxing Gibbous17Sun
18Mon10:429.911:069.84:26-0.14:52-0.56:466:49Full Moon18Mon
19Tue11:2810.211:4810.45:12-0.75:34-0.86:446:51Full Moon19Tue
20Wed12:1310.45:58-1.26:17-1.06:426:52Full Moon20Wed
21Thu12:3110.81:0010.46:45-1.57:02-1.06:406:53Waning Gibbous21Thu
22Fri1:1611.01:4810.27:33-1.67:49-0.86:386:54Waning Gibbous22Fri
23Sat2:0311.02:409.88:23-1.58:39-0.56:376:55Waning Gibbous23Sat
24Sun2:5510.73:369.49:18-1.19:340.06:356:57Waning Gibbous24Sun
25Mon3:5210.34:398.910:18-0.610:350.46:336:58Third Quarter25Mon
26Tue4:569.95:468.611:23-0.211:420.86:316:59Third Quarter26Tue
27Wed6:059.56:568.512:330.16:297:00Third Quarter27Wed
28Thu7:169.38:048.612:530.91:430.26:287:02Waning Crescent28Thu
29Fri8:249.39:048.92:050.82:470.26:267:03Waning Crescent29Fri
30Sat9:259.49:579.23:090.53:420.06:247:04Waning Crescent30Sat
31Sun10:179.510:439.54:040.24:290.06:227:05Waning Crescent31Sun
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 6:58 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 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