Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Monday, July 13, 2026
The tide is currently falling in South Harpswell, ME.
Next low tide : in 1h 16m at 4:24 am (-0.8 ft)
Next high tide : 10:39 am (9.0 ft)
Sunset today : 8:21 pm
Sunrise tomorrow : 5:10 am
Moon phase : New Moon (1% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

South Harpswell, ME Tides - Jun 1991

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat2:029.42:468.38:270.48:301.65:018:14Waning Gibbous1Sat
2Sun2:429.23:278.29:060.69:131.75:008:15Waning Gibbous2Sun
3Mon3:249.04:098.39:470.710:001.75:008:16Third Quarter3Mon
4Tue4:108.84:538.410:290.810:491.74:598:16Third Quarter4Tue
5Wed4:588.65:388.611:140.911:411.54:598:17Third Quarter5Wed
6Thu5:508.56:248.912:000.94:588:18Third Quarter6Thu
7Fri6:458.47:149.312:351.212:500.94:588:19Waning Crescent7Fri
8Sat7:438.48:059.71:320.81:440.94:588:19Waning Crescent8Sat
9Sun8:428.68:5810.22:300.32:380.74:588:20Waning Crescent9Sun
10Mon9:388.99:5010.73:26-0.23:320.44:578:20Waning Crescent10Mon
11Tue10:349.210:4311.14:20-0.84:250.24:578:21New Moon11Tue
12Wed11:299.411:3811.45:13-1.25:20-0.14:578:22New Moon12Wed
13Thu12:249.66:07-1.46:15-0.24:578:22New Moon13Thu
14Fri12:3311.51:199.87:01-1.57:10-0.24:578:23Waxing Crescent14Fri
15Sat1:2811.42:149.87:55-1.58:07-0.14:578:23Waxing Crescent15Sat
16Sun2:2511.13:109.88:49-1.29:060.14:578:23Waxing Crescent16Sun
17Mon3:2310.64:089.89:45-0.910:080.34:578:24First Quarter17Mon
18Tue4:2410.05:069.810:41-0.411:120.44:578:24First Quarter18Tue
19Wed5:269.56:039.711:380.14:578:24First Quarter19Wed
20Thu6:289.06:599.612:160.612:350.54:578:25First Quarter20Thu
21Fri7:318.67:559.61:200.61:320.94:588:25Waxing Gibbous21Fri
22Sat8:328.38:499.62:220.62:291.24:588:25Waxing Gibbous22Sat
23Sun9:298.29:389.63:180.53:211.44:588:25Waxing Gibbous23Sun
24Mon10:198.210:249.64:090.44:091.44:588:25Waxing Gibbous24Mon
25Tue11:058.211:079.64:540.34:521.44:598:26Full Moon25Tue
26Wed11:498.311:489.65:360.35:331.44:598:26Full Moon26Wed
27Thu12:298.36:160.26:121.44:598:26Full Moon27Thu
28Fri12:269.61:078.46:520.26:491.45:008:26Full Moon28Fri
29Sat1:039.61:438.47:270.37:271.45:008:26Waning Gibbous29Sat
30Sun1:399.52:188.58:010.38:051.45:018:25Waning Gibbous30Sun
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 7:31 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 1% 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 (1% 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