Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Tuesday, June 23, 2026
The tide is currently rising in South Harpswell, ME.
Next low tide : 12:55 pm (1.0 ft)
Next high tide : in 12m at 6:49 am (8.6 ft)
Sunset today : 8:25 pm
Sunrise tomorrow : 4:58 am
Moon phase : First Quarter (67% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

South Harpswell, ME Tides - Dec 2017

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri8:2710.38:599.62:090.02:45-0.66:544:04Waxing Gibbous1Fri
2Sat9:1510.99:509.92:58-0.43:36-1.26:554:03Full Moon2Sat
3Sun10:0411.310:4210.23:48-0.74:27-1.76:564:03Full Moon3Sun
4Mon10:5511.611:3510.24:39-0.85:18-1.96:574:03Full Moon4Mon
5Tue11:4711.65:30-0.96:10-2.06:584:03Waning Gibbous5Tue
6Wed12:2810.212:4011.46:24-0.77:04-1.86:594:03Waning Gibbous6Wed
7Thu1:2310.01:3611.07:19-0.58:00-1.47:004:02Waning Gibbous7Thu
8Fri2:219.82:3610.58:18-0.18:59-0.97:014:02Third Quarter8Fri
9Sat3:239.63:409.99:220.210:00-0.57:024:02Third Quarter9Sat
10Sun4:259.44:459.410:280.511:02-0.17:034:02Third Quarter10Sun
11Mon5:279.35:519.111:360.67:034:02Third Quarter11Mon
12Tue6:279.36:558.812:040.312:420.67:044:03Waning Crescent12Tue
13Wed7:259.47:558.71:040.51:440.47:054:03Waning Crescent13Wed
14Thu8:169.58:488.71:590.62:380.27:064:03Waning Crescent14Thu
15Fri9:039.69:368.72:480.73:250.07:074:03Waning Crescent15Fri
16Sat9:459.710:198.73:310.74:08-0.17:074:03New Moon16Sat
17Sun10:259.711:008.74:120.84:48-0.17:084:04New Moon17Sun
18Mon11:029.711:398.64:490.95:25-0.17:094:04New Moon18Mon
19Tue11:399.65:260.96:00-0.17:094:05New Moon19Tue
20Wed12:168.612:149.56:011.06:340.07:104:05Waxing Crescent20Wed
21Thu12:528.512:509.46:381.17:100.17:104:05Waxing Crescent21Thu
22Fri1:288.41:279.27:161.27:470.37:114:06Waxing Crescent22Fri
23Sat2:068.32:089.07:571.38:270.47:114:06Waxing Crescent23Sat
24Sun2:488.32:528.88:421.39:110.57:124:07First Quarter24Sun
25Mon3:328.43:428.79:321.39:580.57:124:08First Quarter25Mon
26Tue4:208.64:368.610:251.110:480.67:124:08First Quarter26Tue
27Wed5:108.95:338.511:220.811:420.57:134:09First Quarter27Wed
28Thu6:049.36:358.712:220.47:134:10Waxing Gibbous28Thu
29Fri7:019.87:368.912:390.31:23-0.17:134:11Waxing Gibbous29Fri
30Sat7:5710.38:359.31:360.02:21-0.77:134:11Waxing Gibbous30Sat
31Sun8:5110.99:329.62:32-0.33:16-1.37:134:12Full Moon31Sun
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 9:52 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 67% 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 (67% 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