Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Saturday, June 20, 2026
The tide is currently falling in South Harpswell, ME.
Next low tide : in 2h 39m at 10:33 pm (0.6 ft)
Next high tide (tomorrow) : 4:48 am (9.6 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 - Jun 2031

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun7:578.58:209.61:450.91:580.85:008:14Waxing Gibbous1Sun
2Mon8:538.79:1010.22:410.42:510.65:008:15Waxing Gibbous2Mon
3Tue9:479.010:0010.73:34-0.23:420.35:008:16Waxing Gibbous3Tue
4Wed10:409.410:5011.14:25-0.84:330.04:598:17Full Moon4Wed
5Thu11:339.711:4211.45:17-1.25:25-0.34:598:17Full Moon5Thu
6Fri12:269.96:09-1.56:18-0.44:588:18Full Moon6Fri
7Sat12:3511.51:1910.07:01-1.77:13-0.44:588:19Waning Gibbous7Sat
8Sun1:2911.42:1410.17:54-1.68:08-0.34:588:19Waning Gibbous8Sun
9Mon2:2511.23:1010.08:48-1.49:07-0.14:588:20Waning Gibbous9Mon
10Tue3:2310.74:0810.09:45-1.010:090.14:578:21Third Quarter10Tue
11Wed4:2510.25:089.910:42-0.611:130.34:578:21Third Quarter11Wed
12Thu5:289.76:079.811:41-0.24:578:22Third Quarter12Thu
13Fri6:319.27:059.812:180.412:400.34:578:22Third Quarter13Fri
14Sat7:358.98:039.81:230.51:390.64:578:23Waning Crescent14Sat
15Sun8:378.78:579.82:260.42:370.94:578:23Waning Crescent15Sun
16Mon9:338.69:479.83:230.33:291.04:578:24Waning Crescent16Mon
17Tue10:248.610:339.84:140.14:171.14:578:24Waning Crescent17Tue
18Wed11:118.611:159.85:000.15:001.14:578:24New Moon18Wed
19Thu11:548.611:569.85:420.05:411.24:578:25New Moon19Thu
20Fri12:348.66:210.16:201.24:588:25New Moon20Fri
21Sat12:349.71:138.66:580.16:581.24:588:25New Moon21Sat
22Sun1:119.61:498.67:330.27:351.34:588:25Waxing Crescent22Sun
23Mon1:489.52:268.68:080.38:141.34:588:25Waxing Crescent23Mon
24Tue2:259.33:038.68:440.48:541.44:598:26Waxing Crescent24Tue
25Wed3:049.13:428.79:210.59:381.44:598:26Waxing Crescent25Wed
26Thu3:478.94:238.810:020.610:251.34:598:26First Quarter26Thu
27Fri4:348.75:079.010:450.711:151.25:008:26First Quarter27Fri
28Sat5:248.55:549.211:320.85:008:26First Quarter28Sat
29Sun6:188.46:459.512:081.012:220.85:018:26First Quarter29Sun
30Mon7:178.47:409.91:060.71:170.75:018:26Waxing Gibbous30Mon
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 1:40 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