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 5h 34m 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 - Jan 2022

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat9:0710.99:539.32:490.03:37-1.37:134:13New Moon1Sat
2Sun10:0211.210:499.53:45-0.24:32-1.67:134:14New Moon2Sun
3Mon10:5811.311:439.64:40-0.45:26-1.77:134:15New Moon3Mon
4Tue11:5211.25:34-0.46:19-1.67:134:16Waxing Crescent4Tue
5Wed12:379.612:4610.96:29-0.37:11-1.47:134:17Waxing Crescent5Wed
6Thu1:309.51:4110.57:24-0.18:04-0.97:134:18Waxing Crescent6Thu
7Fri2:249.32:379.98:210.28:57-0.47:134:19Waxing Crescent7Fri
8Sat3:199.13:369.29:210.59:520.17:134:20First Quarter8Sat
9Sun4:149.04:358.610:220.810:460.67:124:21First Quarter9Sun
10Mon5:098.95:368.211:250.911:411.17:124:22First Quarter10Mon
11Tue6:048.86:387.812:271.07:124:23First Quarter11Tue
12Wed6:598.87:377.712:381.41:270.97:114:25Waxing Gibbous12Wed
13Thu7:508.88:317.81:331.52:210.77:114:26Waxing Gibbous13Thu
14Fri8:389.09:187.92:231.53:080.57:104:27Waxing Gibbous14Fri
15Sat9:229.110:028.03:081.43:510.37:104:28Waxing Gibbous15Sat
16Sun10:039.310:438.13:491.34:310.17:094:29Full Moon16Sun
17Mon10:439.411:218.24:271.25:070.07:094:31Full Moon17Mon
18Tue11:209.511:578.35:041.05:42-0.17:084:32Full Moon18Tue
19Wed11:559.65:400.96:16-0.17:084:33Full Moon19Wed
20Thu12:318.412:319.66:170.86:50-0.27:074:34Waning Gibbous20Thu
21Fri1:058.51:089.56:560.77:26-0.27:064:36Waning Gibbous21Fri
22Sat1:418.71:489.37:370.68:05-0.17:054:37Waning Gibbous22Sat
23Sun2:218.92:339.18:230.68:480.17:054:38Waning Gibbous23Sun
24Mon3:049.03:248.89:140.59:350.37:044:40Third Quarter24Mon
25Tue3:539.24:208.510:090.410:270.57:034:41Third Quarter25Tue
26Wed4:479.45:238.311:090.311:240.67:024:42Third Quarter26Wed
27Thu5:469.56:318.212:150.17:014:44Waning Crescent27Thu
28Fri6:509.87:408.312:280.71:23-0.27:004:45Waning Crescent28Fri
29Sat7:5510.18:448.61:330.62:27-0.66:594:46Waning Crescent29Sat
30Sun8:5610.59:429.02:360.33:26-1.06:584:48New Moon30Sun
31Mon9:5410.810:389.33:34-0.14:21-1.36:574:49New Moon31Mon
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 7:33 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