Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Thursday, June 25, 2026
The tide is currently falling in South Harpswell, ME.
Next low tide : in 42m at 2:40 am (0.8 ft)
Next high tide : 8:49 am (8.0 ft)
Sunset today : 8:26 pm
Sunrise tomorrow : 4:59 am
Moon phase : Waxing Gibbous (84% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

South Harpswell, ME Tides - Mar 2015

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun8:059.18:428.41:491.12:300.36:165:28Waxing Gibbous1Sun
2Mon8:579.29:298.62:430.93:180.26:145:29Waxing Gibbous2Mon
3Tue9:439.310:118.83:300.74:010.16:135:30Full Moon3Tue
4Wed10:249.410:499.04:110.54:380.06:115:32Full Moon4Wed
5Thu11:029.411:249.14:490.35:120.06:095:33Full Moon5Thu
6Fri11:389.411:579.25:250.25:440.06:085:34Full Moon6Fri
7Sat12:129.35:580.26:150.16:065:35Full Moon7Sat
8Sun12:289.21:459.17:320.27:470.37:046:37Waning Gibbous8Sun
9Mon2:009.22:208.98:070.28:210.57:026:38Waning Gibbous9Mon
10Tue2:339.22:578.68:450.38:580.77:016:39Waning Gibbous10Tue
11Wed3:109.13:398.49:270.49:410.86:596:40Waning Gibbous11Wed
12Thu3:549.04:288.210:140.510:291.06:576:42Third Quarter12Thu
13Fri4:439.05:238.011:070.611:231.16:556:43Third Quarter13Fri
14Sat5:409.06:238.112:060.66:546:44Third Quarter14Sat
15Sun6:429.27:288.312:231.01:090.46:526:45Waning Crescent15Sun
16Mon7:489.58:328.81:280.82:130.06:506:47Waning Crescent16Mon
17Tue8:5210.09:319.52:330.33:13-0.66:486:48Waning Crescent17Tue
18Wed9:5110.510:2410.13:33-0.44:08-1.16:466:49Waning Crescent18Wed
19Thu10:4610.911:1610.74:29-1.14:59-1.56:456:50New Moon19Thu
20Fri11:4011.15:23-1.65:50-1.76:436:51New Moon20Fri
21Sat12:0611.112:3311.26:16-1.96:39-1.76:416:53New Moon21Sat
22Sun12:5511.31:2411.07:07-2.07:29-1.56:396:54Waxing Crescent22Sun
23Mon1:4511.22:1610.57:59-1.88:19-1.06:376:55Waxing Crescent23Mon
24Tue2:3510.93:1110.08:53-1.49:11-0.46:356:56Waxing Crescent24Tue
25Wed3:2910.44:099.39:49-0.810:070.26:346:57First Quarter25Wed
26Thu4:269.85:108.810:49-0.211:070.86:326:59First Quarter26Thu
27Fri5:279.36:128.411:520.36:307:00First Quarter27Fri
28Sat6:308.97:168.212:111.212:570.66:287:01First Quarter28Sat
29Sun7:358.78:178.21:171.42:010.86:267:02Waxing Gibbous29Sun
30Mon8:358.79:118.42:211.32:580.76:257:03Waxing Gibbous30Mon
31Tue9:288.89:578.73:171.13:460.66:237:05Waxing Gibbous31Tue
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 5:44 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 spring phase. Tonight's moon is 84% 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 near their weekly maximum.

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 Waxing Gibbous (84% illuminated). This places South Harpswell, ME in a spring tide cycle, so tidal ranges are near their weekly maximum 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