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 2h 33m 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 2031

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed5:069.35:368.411:240.611:400.87:134:13First Quarter1Wed
2Thu6:049.16:398.112:280.77:134:14Waxing Gibbous2Thu
3Fri7:019.17:398.012:391.11:290.67:134:15Waxing Gibbous3Fri
4Sat7:549.18:328.11:361.22:230.57:134:16Waxing Gibbous4Sat
5Sun8:439.29:208.22:271.23:100.37:134:17Waxing Gibbous5Sun
6Mon9:279.410:038.33:121.13:530.27:134:18Full Moon6Mon
7Tue10:089.510:438.43:531.04:320.07:134:19Full Moon7Tue
8Wed10:469.611:218.54:310.95:08-0.17:134:20Full Moon8Wed
9Thu11:239.611:568.65:080.85:41-0.17:124:21Full Moon9Thu
10Fri11:589.65:430.76:14-0.17:124:22Full Moon10Fri
11Sat12:308.712:329.56:190.76:47-0.17:124:23Waning Gibbous11Sat
12Sun1:038.81:089.46:570.67:22-0.17:114:24Waning Gibbous12Sun
13Mon1:388.91:479.27:370.68:010.07:114:25Waning Gibbous13Mon
14Tue2:169.02:308.98:220.68:430.27:114:27Third Quarter14Tue
15Wed3:009.13:208.79:110.59:300.37:104:28Third Quarter15Wed
16Thu3:489.24:158.510:050.510:220.57:104:29Third Quarter16Thu
17Fri4:429.45:168.311:040.411:190.57:094:30Third Quarter17Fri
18Sat5:419.66:238.312:090.17:084:32Waning Crescent18Sat
19Sun6:459.97:318.612:220.51:15-0.27:084:33Waning Crescent19Sun
20Mon7:4910.38:349.01:270.32:18-0.77:074:34Waning Crescent20Mon
21Tue8:5010.79:329.42:29-0.13:17-1.27:064:35New Moon21Tue
22Wed9:4711.110:279.83:27-0.54:11-1.67:064:37New Moon22Wed
23Thu10:4211.311:2010.24:23-0.95:03-1.87:054:38New Moon23Thu
24Fri11:3511.35:17-1.15:53-1.87:044:39New Moon24Fri
25Sat12:1010.312:2611.06:10-1.16:42-1.67:034:41Waxing Crescent25Sat
26Sun12:5910.31:1710.67:02-0.97:30-1.27:024:42Waxing Crescent26Sun
27Mon1:4810.12:099.97:54-0.68:19-0.67:014:43Waxing Crescent27Mon
28Tue2:399.83:039.28:49-0.29:090.07:004:45First Quarter28Tue
29Wed3:319.44:008.69:460.310:020.66:594:46First Quarter29Wed
30Thu4:259.14:598.110:450.610:581.16:584:47First Quarter30Thu
31Fri5:218.86:007.711:480.911:571.56:574:49First Quarter31Fri
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