Tides Today & Tomorrow in South Harpswell, ME

TIDE TIMES for Saturday, July 4, 2026
The tide is currently falling in South Harpswell, ME.
Next low tide : in 45m at 8:53 pm (1.3 ft)
Next high tide (tomorrow) : 3:03 am (9.3 ft)
Sunset today : 8:25 pm
Sunrise tomorrow : 5:03 am
Moon phase : Waning Gibbous (81% illuminated)
Tide Station Location : Station #8417647
Common Questions About Tides

South Harpswell, ME Tides - Aug 2049

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun1:139.51:428.97:260.27:360.95:298:03Waxing Crescent1Sun
2Mon1:489.42:149.07:580.38:130.85:308:01Waxing Crescent2Mon
3Tue2:249.22:499.18:330.48:530.85:318:00Waxing Crescent3Tue
4Wed3:038.93:269.29:100.59:370.85:337:59Waxing Crescent4Wed
5Thu3:468.74:099.39:520.710:250.85:347:57First Quarter5Thu
6Fri4:348.54:579.410:390.811:180.75:357:56First Quarter6Fri
7Sat5:288.35:509.511:300.95:367:55First Quarter7Sat
8Sun6:288.26:509.712:160.612:270.95:377:53Waxing Gibbous8Sun
9Mon7:338.37:5310.11:190.41:300.85:387:52Waxing Gibbous9Mon
10Tue8:388.78:5610.52:240.02:340.45:397:51Waxing Gibbous10Tue
11Wed9:399.19:5610.93:25-0.53:350.05:407:49Waxing Gibbous11Wed
12Thu10:369.710:5311.24:21-1.04:33-0.55:417:48Full Moon12Thu
13Fri11:3010.211:4811.45:14-1.35:29-0.95:437:46Full Moon13Fri
14Sat12:2310.66:06-1.56:24-1.15:447:45Full Moon14Sat
15Sun12:4211.31:1310.86:56-1.57:18-1.15:457:43Waning Gibbous15Sun
16Mon1:3511.02:0310.87:46-1.38:12-1.05:467:42Waning Gibbous16Mon
17Tue2:2810.62:5410.68:35-0.89:07-0.75:477:40Waning Gibbous17Tue
18Wed3:229.93:4710.29:27-0.310:04-0.25:487:38Third Quarter18Wed
19Thu4:209.34:439.910:210.311:040.25:497:37Third Quarter19Thu
20Fri5:198.75:409.511:170.95:507:35Third Quarter20Fri
21Sat6:208.36:399.212:050.612:161.35:527:34Third Quarter21Sat
22Sun7:228.07:409.01:090.91:181.65:537:32Waning Crescent22Sun
23Mon8:228.08:379.02:111.02:181.65:547:30Waning Crescent23Mon
24Tue9:168.19:289.23:060.93:131.55:557:29Waning Crescent24Tue
25Wed10:038.310:149.33:540.74:001.25:567:27Waning Crescent25Wed
26Thu10:458.510:569.44:360.54:421.05:577:25New Moon26Thu
27Fri11:248.811:349.55:130.45:200.85:587:24New Moon27Fri
28Sat12:009.05:470.35:570.75:597:22New Moon28Sat
29Sun12:119.512:349.26:200.36:320.56:017:20New Moon29Sun
30Mon12:469.51:069.36:510.37:080.46:027:18Waxing Crescent30Mon
31Tue1:219.31:389.47:240.37:450.36:037:17Waxing Crescent31Tue
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8417647)

Common Questions About South Harpswell, ME Tides

Show All
What time does the tide turn (slack tide) in South Harpswell, ME today?

Slack tide in South Harpswell, ME is approximately 11:58 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 81% 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 Waning Gibbous (81% 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