Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Thursday, July 16, 2026
The tide is currently rising in South Harpswell, ME.
Next low tide : 7:19 pm (-0.2 ft)
Next high tide : in 5h 25m at 1:26 pm (9.7 ft)
Sunset today : 8:19 pm
Sunrise tomorrow : 5:13 am
Moon phase : Waxing Crescent (7% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

South Harpswell, ME Tides - Nov 2065

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun1:2410.012:3411.36:19-0.47:01-1.46:164:30Waxing Crescent1Sun
2Mon1:199.71:3010.97:130.07:58-1.06:184:28Waxing Crescent2Mon
3Tue2:199.32:3110.48:120.49:00-0.56:194:27First Quarter3Tue
4Wed3:229.03:379.99:170.710:04-0.16:204:26First Quarter4Wed
5Thu4:288.84:459.510:251.011:090.36:224:25First Quarter5Thu
6Fri5:328.85:529.111:341.06:234:23First Quarter6Fri
7Sat6:339.06:569.012:120.512:420.96:244:22Waxing Gibbous7Sat
8Sun7:299.27:558.91:110.61:430.76:264:21Waxing Gibbous8Sun
9Mon8:199.48:478.82:030.72:360.46:274:20Waxing Gibbous9Mon
10Tue9:039.69:338.82:490.83:230.26:284:19Waxing Gibbous10Tue
11Wed9:439.610:168.73:310.94:050.16:304:18Full Moon11Wed
12Thu10:219.610:578.64:091.04:440.06:314:17Full Moon12Thu
13Fri10:579.611:358.54:451.15:210.16:324:16Full Moon13Fri
14Sat11:339.55:211.35:570.26:334:15Full Moon14Sat
15Sun12:128.412:099.45:561.46:330.36:354:14Waning Gibbous15Sun
16Mon12:498.212:459.26:331.57:100.56:364:13Waning Gibbous16Mon
17Tue1:278.11:249.17:121.67:500.76:374:12Waning Gibbous17Tue
18Wed2:087.92:078.97:541.78:330.86:394:11Waning Gibbous18Wed
19Thu2:537.92:548.88:411.89:190.86:404:10Third Quarter19Thu
20Fri3:418.03:468.79:331.710:070.86:414:10Third Quarter20Fri
21Sat4:308.24:418.610:281.510:580.86:424:09Third Quarter21Sat
22Sun5:208.65:398.711:261.211:500.76:444:08Third Quarter22Sun
23Mon6:129.16:388.812:250.76:454:07Waning Crescent23Mon
24Tue7:059.77:389.112:440.51:240.16:464:07Waning Crescent24Tue
25Wed7:5710.38:349.41:390.22:20-0.66:474:06Waning Crescent25Wed
26Thu8:4810.99:289.62:31-0.13:13-1.26:484:06New Moon26Thu
27Fri9:3911.310:229.83:23-0.34:06-1.66:504:05New Moon27Fri
28Sat10:3211.511:169.94:15-0.55:00-1.86:514:05New Moon28Sat
29Sun11:2611.55:09-0.55:53-1.86:524:04Waxing Crescent29Sun
30Mon12:119.812:2011.36:03-0.46:47-1.56:534:04Waxing Crescent30Mon
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 4:22 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 7% 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 Crescent (7% 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