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 (tomorrow) : 7:59 am (-1.1 ft)
Next high tide (tomorrow) : in 4h 22m at 1:37 am (11.0 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 - Aug 2066

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun7:108.47:3110.112:570.31:070.85:298:03Waxing Gibbous1Sun
2Mon8:198.58:3710.42:040.12:130.65:308:01Waxing Gibbous2Mon
3Tue9:238.89:3910.83:09-0.33:170.35:318:00Waxing Gibbous3Tue
4Wed10:239.210:3811.14:08-0.74:17-0.15:327:59Full Moon4Wed
5Thu11:199.711:3411.25:04-1.15:14-0.45:347:58Full Moon5Thu
6Fri12:1210.05:56-1.36:10-0.65:357:56Full Moon6Fri
7Sat12:2811.21:0310.36:46-1.37:03-0.75:367:55Waning Gibbous7Sat
8Sun1:2010.91:5110.37:34-1.17:55-0.65:377:54Waning Gibbous8Sun
9Mon2:1010.52:3910.28:21-0.78:47-0.35:387:52Waning Gibbous9Mon
10Tue3:029.93:2810.09:09-0.29:410.15:397:51Waning Gibbous10Tue
11Wed3:559.24:199.69:580.410:370.55:407:49Third Quarter11Wed
12Thu4:518.65:119.310:491.011:340.85:417:48Third Quarter12Thu
13Fri5:488.16:069.011:431.55:427:46Third Quarter13Fri
14Sat6:477.87:048.812:341.112:401.85:447:45Third Quarter14Sat
15Sun7:487.68:028.81:371.21:401.95:457:43Waning Crescent15Sun
16Mon8:457.78:568.92:361.22:371.85:467:42Waning Crescent16Mon
17Tue9:367.99:459.13:271.03:281.65:477:40Waning Crescent17Tue
18Wed10:218.110:289.44:120.84:121.45:487:39Waning Crescent18Wed
19Thu11:028.411:099.54:510.54:531.15:497:37New Moon19Thu
20Fri11:408.711:479.65:270.35:310.95:507:35New Moon20Fri
21Sat12:159.06:010.26:090.65:517:34New Moon21Sat
22Sun12:249.712:489.36:340.16:460.45:537:32New Moon22Sun
23Mon1:009.71:229.57:070.07:250.25:547:31Waxing Crescent23Mon
24Tue1:379.61:579.77:430.08:060.15:557:29Waxing Crescent24Tue
25Wed2:179.42:369.88:220.18:500.15:567:27Waxing Crescent25Wed
26Thu3:019.13:209.99:050.39:400.15:577:25First Quarter26Thu
27Fri3:518.84:119.99:540.510:350.25:587:24First Quarter27Fri
28Sat4:488.65:089.810:480.711:360.35:597:22First Quarter28Sat
29Sun5:518.46:119.811:490.96:007:20First Quarter29Sun
30Mon6:598.37:199.912:420.312:550.96:027:19Waxing Gibbous30Mon
31Tue8:098.58:2810.11:510.22:040.76:037:17Waxing 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 4:48 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 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