Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Wednesday, July 15, 2026
The tide is currently falling in South Harpswell, ME.
Next low tide : in 46m at 6:24 pm (-0.1 ft)
Next high tide (tomorrow) : 12:43 am (11.2 ft)
Sunset today : 8:19 pm
Sunrise tomorrow : 5:12 am
Moon phase : New Moon (2% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

South Harpswell, ME Tides - Dec 1989

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri12:398.112:349.56:211.47:000.26:544:04Waxing Crescent1Fri
2Sat1:178.11:159.47:021.47:420.36:554:03Waxing Crescent2Sat
3Sun1:598.12:009.37:481.48:270.36:564:03Waxing Crescent3Sun
4Mon2:468.22:509.28:381.39:150.36:574:03First Quarter4Mon
5Tue3:368.53:469.09:341.210:070.36:584:03First Quarter5Tue
6Wed4:298.84:468.910:341.011:010.36:594:03First Quarter6Wed
7Thu5:249.25:498.911:360.611:570.37:004:03First Quarter7Thu
8Fri6:209.76:538.912:400.17:014:02Waxing Gibbous8Fri
9Sat7:1710.27:569.112:550.21:42-0.47:024:02Waxing Gibbous9Sat
10Sun8:1310.68:549.31:530.12:40-1.07:034:02Waxing Gibbous10Sun
11Mon9:0711.09:509.52:49-0.13:35-1.37:034:02Full Moon11Mon
12Tue10:0011.210:459.53:42-0.24:29-1.57:044:03Full Moon12Tue
13Wed10:5311.211:389.54:35-0.25:22-1.57:054:03Full Moon13Wed
14Thu11:4611.05:28-0.16:13-1.37:064:03Waning Gibbous14Thu
15Fri12:309.412:3710.76:200.17:04-1.07:074:03Waning Gibbous15Fri
16Sat1:219.21:2910.27:130.47:55-0.67:074:03Waning Gibbous16Sat
17Sun2:138.92:229.78:070.78:46-0.17:084:04Waning Gibbous17Sun
18Mon3:068.73:189.19:041.09:380.47:094:04Third Quarter18Mon
19Tue3:598.64:158.510:021.310:290.97:094:04Third Quarter19Tue
20Wed4:528.55:138.011:021.411:201.37:104:05Third Quarter20Wed
21Thu5:448.56:127.712:021.47:104:05Third Quarter21Thu
22Fri6:358.57:117.612:131.61:021.37:114:06Waning Crescent22Fri
23Sat7:268.68:057.61:061.71:561.17:114:06Waning Crescent23Sat
24Sun8:138.88:547.71:561.72:440.87:124:07Waning Crescent24Sun
25Mon8:579.09:397.92:421.73:270.67:124:08Waning Crescent25Mon
26Tue9:399.210:228.03:231.54:080.37:124:08New Moon26Tue
27Wed10:199.411:028.14:031.44:460.17:134:09New Moon27Wed
28Thu10:589.611:408.24:421.25:240.07:134:10New Moon28Thu
29Fri11:379.75:211.06:01-0.27:134:10New Moon29Fri
30Sat12:188.412:169.86:020.96:39-0.37:134:11Waxing Crescent30Sat
31Sun12:568.612:579.86:440.77:19-0.37:134:12Waxing Crescent31Sun
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 9:33 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 spring phase. Tonight's moon is 2% 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 New Moon (2% 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